Merge branch 'develop' into claude/todo-191-plan-508110

Signed-off-by: Niels Lohmann <mail@nlohmann.me>
Fix links to moved API pages in the API changes page
2026-10-27 00:08:55 +00:00 · 2026-10-21 10:51:41 +02:00 · 2026-10-10 07:42:37 +02:00 · 2026-10-10 04:01:42 +02:00 · 2026-10-04 17:35:55 +02:00 · 2026-09-30 20:36:12 +02:00
791 changed files with 677020 additions and 31182 deletions
@@ -1,33 +1,3 @@
 # Style or vendor rule sets that do not fit a header-only library:
 #   altera-*, fuchsia-*, llvmlibc-*, android-cloexec-fopen, boost-use-ranges, llvm-header-guard,
 #   llvm-include-order, llvm-prefer-static-over-anonymous-namespace, llvm-use-ranges,
 #   misc-use-anonymous-namespace, google-runtime-float, google-runtime-int, hicpp-signed-bitwise,
 #   bugprone-signed-bitwise, hicpp-explicit-conversions, google-explicit-constructor,
 #   cppcoreguidelines-explicit-constructor, misc-explicit-constructor (implicit conversions are the
 #   API), readability-trailing-comma,
 #   hicpp-avoid-goto / cppcoreguidelines-avoid-goto, hicpp-no-array-decay,
 #   hicpp-uppercase-literal-suffix, readability-uppercase-literal-suffix, modernize-use-trailing-return-type.
 # Constructs the library needs on purpose (the library supports C++11 and legacy compilers):
 #   cppcoreguidelines-macro-usage, cppcoreguidelines-avoid-do-while (macros),
 #   cppcoreguidelines-pro-bounds-*, cppcoreguidelines-pro-type-reinterpret-cast,
 #   cppcoreguidelines-pro-type-union-access (parsers, serializers, basic_json's value union),
 #   cppcoreguidelines-avoid-const-or-ref-data-members, cppcoreguidelines-rvalue-reference-param-not-moved,
 #   cppcoreguidelines-avoid-non-const-global-variables, misc-non-private-member-variables-in-classes,
 #   misc-no-recursion (value walks are recursive, bounded by detail::recursion_depth_limit()),
 #   modernize-type-traits, modernize-use-constraints, modernize-use-ranges, modernize-use-std-numbers,
 #   modernize-use-designated-initializers, modernize-use-nodiscard, modernize-concat-nested-namespaces,
 #   readability-redundant-typename, readability-redundant-parentheses,
 #   readability-redundant-access-specifiers, readability-simplify-boolean-expr,
 #   readability-use-concise-preprocessor-directives, modernize-use-string-view,
 #   modernize-use-integer-sign-comparison (needs std::cmp_less; the flagged
 #   static_cast<std::size_t>(end - pos) < n comparisons are deliberate)
 #   (all need a newer standard or compiler than C++11, or would change macro-generated or
 #   deliberately explicit code).
 # Too noisy to be useful (numeric parsing/formatting code, doctest, tests):
 #   bugprone-easily-swappable-parameters, cppcoreguidelines-avoid-magic-numbers, readability-magic-numbers,
 #   readability-identifier-length, readability-function-cognitive-complexity, performance-enum-size,
 #   concurrency-mt-unsafe, misc-confusable-identifiers, misc-include-cleaner (run on its own for
 #   the consumer headers in cmake/ci.cmake).
 # portability-avoid-pragma-once: kept disabled on purpose. #pragma once is accepted
 # by every supported compiler, and tools/amalgamate/amalgamate.py strips it from
 # single_include, so there is nothing left to fix here.
@@ -40,14 +10,14 @@ Checks: '*,
         -android-cloexec-fopen,
         -boost-use-ranges,
         -bugprone-easily-swappable-parameters,
-         -bugprone-signed-bitwise,
+         -cert-err58-cpp,
         -clang-analyzer-webkit.NoUncountedMemberChecker,
         -concurrency-mt-unsafe,
         -cppcoreguidelines-avoid-const-or-ref-data-members,
         -cppcoreguidelines-avoid-do-while,
         -cppcoreguidelines-avoid-goto,
         -cppcoreguidelines-avoid-magic-numbers,
         -cppcoreguidelines-avoid-non-const-global-variables,
         -cppcoreguidelines-explicit-constructor,
         -cppcoreguidelines-macro-usage,
         -cppcoreguidelines-pro-bounds-avoid-unchecked-container-access,
         -cppcoreguidelines-pro-bounds-array-to-pointer-decay,
@@ -56,15 +26,19 @@ Checks: '*,
         -cppcoreguidelines-pro-type-reinterpret-cast,
         -cppcoreguidelines-pro-type-union-access,
         -cppcoreguidelines-rvalue-reference-param-not-moved,
         -cppcoreguidelines-virtual-class-destructor,
         -fuchsia-default-arguments-calls,
         -fuchsia-default-arguments-declarations,
         -fuchsia-overloaded-operator,
         -google-explicit-constructor,
         -google-readability-function-size,
         -google-runtime-float,
         -google-runtime-int,
         -hicpp-avoid-goto,
         -hicpp-explicit-conversions,
         -hicpp-function-size,
         -hicpp-no-array-decay,
         -hicpp-no-assembler,
         -hicpp-signed-bitwise,
         -hicpp-uppercase-literal-suffix,
         -llvm-header-guard,
@@ -74,7 +48,6 @@ Checks: '*,
         -llvmlibc-*,
         -misc-use-anonymous-namespace,
         -misc-confusable-identifiers,
         -misc-explicit-constructor,
         -misc-include-cleaner,
         -misc-no-recursion,
         -misc-non-private-member-variables-in-classes,
@@ -82,22 +55,20 @@ Checks: '*,
         -modernize-type-traits,
         -modernize-use-constraints,
         -modernize-use-designated-initializers,
         -modernize-use-integer-sign-comparison,
         -modernize-use-nodiscard,
         -modernize-use-ranges,
         -modernize-use-string-view,
         -modernize-use-std-numbers,
         -modernize-use-trailing-return-type,
         -performance-enum-size,
         -portability-avoid-pragma-once,
         -readability-function-cognitive-complexity,
         -readability-function-size,
         -readability-identifier-length,
         -readability-magic-numbers,
         -readability-redundant-access-specifiers,
         -readability-redundant-parentheses,
         -readability-redundant-typename,
         -readability-simplify-boolean-expr,
         -readability-trailing-comma,
         -readability-uppercase-literal-suffix,
         -readability-use-concise-preprocessor-directives'
@@ -18,8 +18,7 @@ environment:
  matrix:
    # The Visual Studio 2017 jobs compile everything with /std:c++17, so they
    # only build the C++17 variant of each test, split into two jobs each to
-    # stay below AppVeyor's 60-minute limit per job. The Visual Studio 2019
+    # stay below AppVeyor's 60-minute limit per job.
    # job builds the tests for all standards and is split for the same reason.
    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
      configuration: Debug
      platform: x86
@@ -51,13 +50,7 @@ environment:
      configuration: Release
      platform: x86
      CXX_FLAGS: "/W4 /WX"
-      CMAKE_OPTIONS: "-DJSON_ImplicitConversions=OFF -DJSON_TestShard=0/2"
+      CMAKE_OPTIONS: "-DJSON_ImplicitConversions=OFF"
      GENERATOR: Visual Studio 16 2019
    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019
      configuration: Release
      platform: x86
      CXX_FLAGS: "/W4 /WX"
      CMAKE_OPTIONS: "-DJSON_ImplicitConversions=OFF -DJSON_TestShard=1/2"
      GENERATOR: Visual Studio 16 2019
    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
@@ -64,7 +64,6 @@ labels:
    - "tests/src/unit-json_view.*"
    - "tests/src/json_view_test_helpers\\.hpp"
    - "tests/src/fuzzer-(parse_json_view|json_view_image)\\.cpp"
    - "tests/benchmarks/json_view/.*"
    - "tools/amalgamate/config_json_view\\.json"
    - "docs/mkdocs/docs/features/json_view\\.md"
    - "docs/mkdocs/docs/api/basic_json_(document|view)/.*"
@@ -154,28 +154,6 @@ jobs:
          # PR content in a job without credentials.
          python3 tools/generate_natvis/generate_natvis.py $MAIN_DIR
      - name: Check the nlohmann_json.natvis generator options
        run: |
          cd $MAIN_DIR
          # The options for configurations outside the checked-in file write
          # to a temporary file, so they do not affect the diff below.
          GENERATOR=tools/generate_natvis/generate_natvis.py
          python3 $GENERATOR --list-tags
          TAG_COUNT=$(python3 $GENERATOR --list-tags | wc -l)
          python3 $GENERATOR --abi-tags diag,_dp,_ns --abi-tags _diag --output $RUNNER_TEMP/abi_tags.natvis
          grep -q '<!-- Namespace nlohmann::json_abi_diag_dp_ns -->' $RUNNER_TEMP/abi_tags.natvis
          grep -q '<!-- Namespace nlohmann::json_abi_diag_dp_ns_v[0-9_]* -->' $RUNNER_TEMP/abi_tags.natvis
          test $(grep -c '<!-- Namespace ' $RUNNER_TEMP/abi_tags.natvis) -eq $(( $(grep -c '<!-- Namespace ' nlohmann_json.natvis) + 2 ))
          python3 $GENERATOR --all --output $RUNNER_TEMP/all.natvis
          test $(grep -c '<!-- Namespace ' $RUNNER_TEMP/all.natvis) -eq $(( (1 << TAG_COUNT) * 2 + 1 ))
          if python3 $GENERATOR --abi-tags _unknown --output $RUNNER_TEMP/unknown.natvis; then
            echo "generate_natvis.py accepted an unknown ABI tag"
            exit 1
          fi
      - name: Build patch and check for differences
        id: diff
        run: |
@@ -0,0 +1,81 @@
 name: "Check API documentation"
 on:
  pull_request:
 permissions:
  contents: read
 jobs:
  check_api_docs:
    runs-on: ubuntu-latest
    steps:
      - name: Harden Runner
        uses: step-security/harden-runner@bf7454d06d71f1098171f2acdf0cd4708d7b5920 # v2.20.0
        with:
          egress-policy: audit
      - name: Checkout pull request
        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
      - name: Install clang
        # Used only as a subprocess for `clang++ -E -v` system-include-path discovery in
        # extract_api.py; it does not need to version-match the pinned libclang pip wheel
        # below, which does the actual AST parsing. Do not "fix" this to be version-matched.
        run: sudo apt-get update && sudo apt-get install -y clang
      - name: Install Python dependencies
        run: pip install -r tools/api_checker/requirements.txt
      - name: Extract API and regenerate the committed surface file
        run: |
          python3 tools/api_checker/extract_api.py \
            --header include/nlohmann/json.hpp \
            --include include \
            --output /tmp/api_snapshot.json \
            --surface-output tools/api_checker/api_surface.json
      - name: "Check API documentation (Phase 1: advisory)"
        # Surfaces missing/broken @sa links without failing the job while the backlog from the
        # initial AST-based rollout is burned down. See tools/api_checker/POLICY.md and the PR
        # that introduced this workflow for the two-phase rollout plan.
        continue-on-error: true
        run: |
          python3 tools/api_checker/check_docs.py \
            --snapshot /tmp/api_snapshot.json
      - name: Check macro documentation (advisory only)
        # Cross-checks docs/mkdocs/docs/api/macros/ pages against #define sites. Only checks the
        # documented-macro-still-exists direction; never blocks CI. See POLICY.md.
        run: python3 tools/api_checker/check_macros.py
      - name: Check for uncommitted API surface changes
        id: diff
        run: |
          mkdir -p ${{ github.workspace }}/patch
          git diff --patch --no-color -- tools/api_checker/api_surface.json > ${{ github.workspace }}/patch/api_surface.patch
          if [ -s ${{ github.workspace }}/patch/api_surface.patch ]; then
            echo "tools/api_checker/api_surface.json is out of date. Diff:"
            cat ${{ github.workspace }}/patch/api_surface.patch
            echo "has_diff=true" >> "$GITHUB_OUTPUT"
          else
            echo "has_diff=false" >> "$GITHUB_OUTPUT"
          fi
      # Uploaded so contributors can fix their PR with `git apply api_surface.patch`
      # instead of installing libclang locally.
      - name: Upload patch
        if: steps.diff.outputs.has_diff == 'true'
        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
        with:
          name: api-surface-patch
          path: patch/api_surface.patch
      - name: Fail if API surface file is not up to date
        # Unlike the doc-backlog check above, this is purely mechanical regeneration with no
        # backlog to phase in -- blocking from the start, matching check_amalgamation.yml's
        # precedent. Contributors who add/remove/rename public API must regenerate and commit
        # tools/api_checker/api_surface.json as part of their PR.
        if: steps.diff.outputs.has_diff == 'true'
        run: exit 1
@@ -38,14 +38,14 @@ jobs:
    # Initializes the CodeQL tools for scanning.
    - name: Initialize CodeQL
-      uses: github/codeql-action/init@6f2ac81f5cd81fe351a197ba0b00d91d03cd2aee # v4.39.0
+      uses: github/codeql-action/init@24c54180a607b1449ed407dd24f251e4e9147c8d # v4.38.3
      with:
        languages: c-cpp
    # Autobuild attempts to build any compiled languages  (C/C++, C#, or Java).
    # If this step fails, then you should remove it and run the build manually (see below)
    - name: Autobuild
-      uses: github/codeql-action/autobuild@6f2ac81f5cd81fe351a197ba0b00d91d03cd2aee # v4.39.0
+      uses: github/codeql-action/autobuild@24c54180a607b1449ed407dd24f251e4e9147c8d # v4.38.3
    - name: Perform CodeQL Analysis
-      uses: github/codeql-action/analyze@6f2ac81f5cd81fe351a197ba0b00d91d03cd2aee # v4.39.0
+      uses: github/codeql-action/analyze@24c54180a607b1449ed407dd24f251e4e9147c8d # v4.38.3
@@ -37,14 +37,6 @@ jobs:
            var matchArtifact = artifacts.data.artifacts.filter((artifact) => {
              return artifact.name == "pr"
            })[0];
            // a run that failed before its jobs started (e.g. a stale queued
            // run cancelled long after its push) has no artifact to report on
            if (!matchArtifact) {
              core.notice('Run ${{ github.event.workflow_run.id }} has no "pr" artifact; nothing to comment on.');
              core.setOutput('found', 'false');
              return;
            }
            core.setOutput('found', 'true');
            var download = await github.rest.actions.downloadArtifact({
               owner: context.repo.owner,
               repo: context.repo.repo,
@@ -59,11 +51,9 @@ jobs:
      # Extract the untrusted PR artifact into a dedicated empty directory and
      # read only the two expected files by fixed path afterwards. This avoids a
      # malicious archive overwriting workspace files or escaping via ../ paths.
-      - if: steps.download.outputs.found == 'true'
+      - run: unzip -o pr.zip -d ./pr_artifact
        run: unzip -o pr.zip -d ./pr_artifact
      - name: 'Comment on PR'
        if: steps.download.outputs.found == 'true'
        uses: actions/github-script@3a2844b7e9c422d3c10d287c895573f7108da1b3 # v9.0.0
        with:
          github-token: ${{ secrets.GITHUB_TOKEN }}
@@ -43,11 +43,10 @@ jobs:
      - name: flawfinder_scan
        uses: david-a-wheeler/flawfinder@c4216b74cf2639ffa98503768bd6e4299b5440c9 # v2.0.20
        with:
-          # single_include/ is generated from include/ and would report every finding twice
+          arguments: '--sarif ./'
          arguments: "--sarif --exclude '*/single_include/*' ./"
          output: 'flawfinder_results.sarif'
      - name: Upload analysis results to GitHub Security tab
-        uses: github/codeql-action/upload-sarif@6f2ac81f5cd81fe351a197ba0b00d91d03cd2aee # v4.39.0
+        uses: github/codeql-action/upload-sarif@24c54180a607b1449ed407dd24f251e4e9147c8d # v4.38.3
        with:
          sarif_file: ${{github.workspace}}/flawfinder_results.sarif
@@ -1,84 +0,0 @@
 name: "json_view benchmarks"
 # On demand only: runs the comparison of json_view with yyjson, simdjson, and
 # Boost.JSON (tests/benchmarks/json_view/compare.py) on GitHub-hosted runners,
 # for numbers from x86-64 and AArch64 Linux. It runs when started by hand, or
 # when a pull request gets the label "benchmark" (on both architectures, with
 # GCC and the default settings). Shared runners are noisy: the results show
 # where json_view stands, but published numbers need a quiet machine (see
 # tests/benchmarks/json_view/README.md).
 on:
  pull_request:
    types: [labeled]
  workflow_dispatch:
    inputs:
      runner:
        description: "Runner image"
        type: choice
        options:
          - ubuntu-24.04
          - ubuntu-24.04-arm
        default: ubuntu-24.04
      compiler:
        description: "Compiler"
        type: choice
        options:
          - g++
          - clang++
        default: g++
      native:
        description: "Compile for the runner's CPU (-march=native)"
        type: boolean
        default: false
      rounds:
        description: "Rounds of bench_view"
        type: number
        default: 30
 permissions:
  contents: read
 concurrency:
  # (the label is part of the group: adding an unrelated label must not cancel a running benchmark)
  group: json-view-benchmarks-${{ github.workflow }}-${{ github.ref }}-${{ github.event.label.name }}
  cancel-in-progress: true
 jobs:
  compare:
    if: github.event_name == 'workflow_dispatch' || github.event.label.name == 'benchmark'
    strategy:
      matrix:
        runner: ${{ fromJSON(github.event_name == 'workflow_dispatch' && format('["{0}"]', inputs.runner) || '["ubuntu-24.04", "ubuntu-24.04-arm"]') }}
    runs-on: ${{ matrix.runner }}
    timeout-minutes: 60
    steps:
      - name: Harden Runner
        uses: step-security/harden-runner@ccd8616d44fd3846e67624a50d5aad6d37bf2d25 # v2.22.1
        with:
          egress-policy: audit
      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
        with:
          persist-credentials: false
      - name: Download test data
        run: |
          cmake -S . -B build -DJSON_BuildTests=On
          cmake --build build --target download_test_data
      - name: Run the comparison
        env:
          CXX: ${{ inputs.compiler || 'g++' }}
          CC: ${{ inputs.compiler == 'clang++' && 'clang' || 'gcc' }}
          ROUNDS: ${{ inputs.rounds || 30 }}
          NATIVE: ${{ inputs.native && '--native' || '' }}
        run: python3 tests/benchmarks/json_view/compare.py --data build/test_files --download --rounds "$ROUNDS" $NATIVE
      - name: Summary
        run: cat tests/benchmarks/json_view/results/*.md >> "$GITHUB_STEP_SUMMARY"
      - uses: actions/upload-artifact@cf430e030ddbb5b0abf93d22962f4752f3646cd9 # v7.0.2
        with:
          name: json_view-benchmarks-${{ matrix.runner }}-${{ inputs.compiler || 'g++' }}
          path: tests/benchmarks/json_view/results/
@@ -80,6 +80,6 @@ jobs:
      # Upload the results to GitHub's code scanning dashboard.
      - name: "Upload to code-scanning"
-        uses: github/codeql-action/upload-sarif@6f2ac81f5cd81fe351a197ba0b00d91d03cd2aee # v4.39.0
+        uses: github/codeql-action/upload-sarif@24c54180a607b1449ed407dd24f251e4e9147c8d # v4.38.3
        with:
          sarif_file: results.sarif
@@ -65,7 +65,7 @@ jobs:
      # Upload SARIF file generated in previous step
      - name: Upload SARIF file
-        uses: github/codeql-action/upload-sarif@6f2ac81f5cd81fe351a197ba0b00d91d03cd2aee # v4.39.0
+        uses: github/codeql-action/upload-sarif@24c54180a607b1449ed407dd24f251e4e9147c8d # v4.38.3
        with:
          sarif_file: semgrep.sarif
        if: always()
@@ -3,6 +3,7 @@
 *.gcno
 *.gcda
 .DS_Store
 __pycache__/
 /.idea
 /cmake-build-*
@@ -44,6 +45,10 @@ venv
 nlohmann_json.spdx
 # api_checker: ephemeral, location/doc-status-sensitive working file (not the committed
 # release-tracking artifact -- see tools/api_checker/api_surface.json for that)
 /tools/api_checker/api_snapshot.json
 # Bazel-related
 MODULE.bazel.lock
@@ -37,7 +37,6 @@ cc_library(
        "include/nlohmann/detail/input/parser.hpp",
        "include/nlohmann/detail/input/position_t.hpp",
        "include/nlohmann/detail/input/pow5_table.hpp",
        "include/nlohmann/detail/input/simd_scan.hpp",
        "include/nlohmann/detail/input/string_scan.hpp",
        "include/nlohmann/detail/iterators/internal_iterator.hpp",
        "include/nlohmann/detail/iterators/iter_impl.hpp",
@@ -90,7 +89,6 @@ cc_library(
        "include/nlohmann/detail/view/simd.hpp",
        "include/nlohmann/detail/view/string_ref.hpp",
        "include/nlohmann/detail/view/value.hpp",
        "include/nlohmann/detail/view/view_mode.hpp",
        "include/nlohmann/json.hpp",
        "include/nlohmann/json_fwd.hpp",
        "include/nlohmann/json_literals.hpp",
@@ -6,7 +6,6 @@ This file describes the source for supporting files; that is, files that are not
 - [GitHub](#github)
 - [REUSE](#reuse)
 - [Package Managers](#package-managers)
 - [Debugging](#debugging)
 ## Continuous Integration
@@ -290,29 +289,3 @@ The module definition for [Bazel](https://bazel.build)'s [Bzlmod](https://bazel.
 Further documentation:
 - [Bazel modules](https://bazel.build/external/module)
 ## Debugging
 ### `nlohmann_json.natvis`
 The [Natvis](https://learn.microsoft.com/en-us/visualstudio/debugger/create-custom-views-of-native-objects) file that
 gives `json` values a friendly view in the Visual Studio debugger. The file is generated by
 `tools/generate_natvis/generate_natvis.py` from the template `tools/generate_natvis/nlohmann_json.natvis.j2` and the ABI
 tags and version in `include/nlohmann/detail/abi_macros.hpp`; change the script or the template rather than editing
 the file by hand. The file can be updated by calling
 ```shell
 make natvis
 ```
 The "Check amalgamation" workflow fails if the file is out of date.
 The file covers the namespace variants with up to two ABI tags. A Natvis file for other configurations can be
 generated with the `--abi-tags` or `--all` options, for example
 `make natvis NATVIS_ARGS="--abi-tags _diag,_dp,_ns --output my_nlohmann_json.natvis"`; see
 [`tools/generate_natvis`](tools/generate_natvis/README.md). With MSVC, CMake adds the file to the `nlohmann_json`
 target and installs it.
 Further documentation:
 - [Create custom views of C++ objects in the debugger using the Natvis framework](https://learn.microsoft.com/en-us/visualstudio/debugger/create-custom-views-of-native-objects)
@@ -46,7 +46,7 @@ all:
 	@echo "clean - remove built files"
 	@echo "(fuzzers) - see tests/fuzzing.md, or run 'make -C tests fuzzers' to build the AFL fuzzers"
 	@echo "macro_builder_check - check that macro_scope.hpp matches tools/macro_builder's output"
-	@echo "natvis - regenerate nlohmann_json.natvis from the current ABI tags and version (pass generator options via NATVIS_ARGS, see tools/generate_natvis/README.md)"
+	@echo "natvis - regenerate nlohmann_json.natvis from the current ABI tags and version"
 	@echo "pretty - beautify code with Artistic Style"
 	@echo "pvs_studio - run the PVS-Studio static analyzer and open the report"
 	@echo "release - create the release files (include.zip, json.tar.xz, single headers, signatures, hashes)"
@@ -120,15 +120,13 @@ $(AMALGAMATED_VIEW_FILE): $(SRCS)
 	tools/amalgamate/amalgamate.py -c tools/amalgamate/config_json_view.json -s . --verbose=yes
 NATVIS_VENV=tools/generate_natvis/venv
 # extra options for generate_natvis.py, e.g. NATVIS_ARGS="--abi-tags _diag,_dp,_ns --output my.natvis"
 NATVIS_ARGS=
 # regenerate nlohmann_json.natvis from the ABI tags and version in include/nlohmann/detail/abi_macros.hpp
 # (the dependencies are installed into a virtual environment first)
 natvis:
 	@test -d $(NATVIS_VENV) || python3 -mvenv $(NATVIS_VENV)
 	@$(NATVIS_VENV)/bin/python3 -c 'import jinja2' 2>/dev/null || $(NATVIS_VENV)/bin/pip3 install --quiet -r tools/generate_natvis/requirements.txt
-	$(NATVIS_VENV)/bin/python3 tools/generate_natvis/generate_natvis.py $(NATVIS_ARGS) .
+	$(NATVIS_VENV)/bin/python3 tools/generate_natvis/generate_natvis.py .
 # regenerate the two tools/macro_builder blocks of $(MACRO_SCOPE_HPP) (see its README.md) and diff against the
 # checked-in header; phony, because it never writes $(MACRO_SCOPE_HPP) itself
@@ -105,7 +105,7 @@ Thanks everyone!
 :books: If you want to **learn more** about how to use the library, check out the rest of the [**README**](#examples), have a look at [**code examples**](https://github.com/nlohmann/json/tree/develop/docs/mkdocs/docs/examples), or browse through the [**help pages**](https://json.nlohmann.me).
-:construction: If you want to understand the **API** better, check out the [**API Reference**](https://json.nlohmann.me/api/basic_json/) or have a look at the [quick reference](#quick-reference) below.
+:construction: If you want to understand the **API** better, check out the [**API Reference**](https://json.nlohmann.me/api/basic_json/) or have a look at the [quick reference](#quick-reference) below. The public API surface is derived mechanically and checked for documentation coverage by the tooling in [`tools/api_checker/`](tools/api_checker/), whose [POLICY.md](tools/api_checker/POLICY.md) defines what counts as public API and what stability is guaranteed.
 :bug: If you found a **bug**, please check the [**FAQ**](https://json.nlohmann.me/home/faq/) if it is a known issue or the result of a design decision. Please also have a look at the [**issue list**](https://github.com/nlohmann/json/issues) before you [**create a new issue**](https://github.com/nlohmann/json/issues/new/choose). Please provide as much information as possible to help us understand and reproduce your issue.
@@ -151,7 +151,7 @@ The `json` class provides an API for manipulating a JSON value. To create a `jso
 ```cpp
 #include <fstream>
 #include <nlohmann/json.hpp>
-using nlohmann::json;
+using json = nlohmann::json;
 // ...
@@ -164,7 +164,7 @@ If using modules (enabled with `NLOHMANN_JSON_BUILD_MODULES`), this example beco
 import std;
 import nlohmann.json;
-using nlohmann::json;
+using json = nlohmann::json;
 // ...
@@ -842,7 +842,7 @@ assert(p == p2);
 To make this work with one of your types, you only need to provide two functions:
 ```cpp
-using nlohmann::json;
+using json = nlohmann::json;
 namespace ns {
    void to_json(json& j, const person& p) {
@@ -1257,7 +1257,7 @@ See the page [quality assurance](https://json.nlohmann.me/community/quality_assu
 #include <nlohmann/json.hpp>
 // for convenience
-using nlohmann::json;
+using json = nlohmann::json;
 ```
 to the files you want to process JSON and set the necessary switches to enable C++11 (e.g., `-std=c++11` for GCC and Clang).
@@ -341,14 +341,13 @@ def download(url, docs) -> str:
        raise ValueError(f'not an http(s) URL: {url}')
    req = urllib.request.Request(u.geturl(), headers={'User-Agent': USER_AGENT})
    # (the scheme is checked above)
    # nosemgrep: python.lang.security.audit.dynamic-urllib-use-detected.dynamic-urllib-use-detected
    with urllib.request.urlopen(req, timeout=20) as r:  # nosec B310
        data = r.read()
        ctype = r.headers.get_content_type()
    path = urllib.parse.unquote(u.path).lstrip('/')
    ext = os.path.splitext(path)[1]
    if u.query or not ext or path.endswith('/'):
-        digest = hashlib.sha256(url.encode()).hexdigest()[:12]
+        digest = hashlib.sha1(url.encode(), usedforsecurity=False).hexdigest()[:12]
        path = os.path.join(os.path.dirname(path), digest + CONTENT_TYPE_EXT.get(ctype, ext or '.bin'))
    rel = os.path.normpath(os.path.join('assets', 'external', u.hostname, path))
    out = os.path.join(docs, rel)
@@ -30,14 +30,6 @@ struct adl_serializer {
 - [**from_json**](from_json.md) - convert a JSON value to any value type
 - [**to_json**](to_json.md) - convert any value type to a JSON value
 ## See also
 - [Arbitrary type conversions](../../features/arbitrary_types.md) - how to make your types convertible
 - [**get**](../basic_json/get.md) / [**get_to**](../basic_json/get_to.md) - convert a JSON value to a C++ type
 - [**basic_json**](../basic_json/basic_json.md) - construct a JSON value from a C++ value
 - [**NLOHMANN_DEFINE_TYPE_INTRUSIVE**](../macros/nlohmann_define_type_intrusive.md) - generate the conversion functions for a type
 - [Specializing enum conversion](../../features/enum_conversion.md)
 ## Version history
 - Added in version 2.1.0.
@@ -23,9 +23,6 @@ Checks whether the input is valid JSON.
    respectively as UTF-8, UTF-16, and UTF-32. If `SentinelType` differs from `IteratorType`, it must be comparable to
    the iterator type with `operator!=`.
    Ill-formed UTF-16 and UTF-32 sequences are rejected: a lone surrogate, a high surrogate that is not followed by its
    low surrogate, and a code point above `U+10FFFF` all make this function return `false`.
 Unlike the [`parse()`](parse.md) function, this function neither throws an exception in case of invalid JSON input
 (i.e., a parse error) nor creates diagnostic information.
@@ -38,12 +35,9 @@ Unlike the [`parse()`](parse.md) function, this function neither throws an excep
    - a `#!c FILE` pointer (throws if null)
    - a C-style array of characters
    - a pointer to a null-terminated string of single byte characters (throws if null)
-    - a `std::string` or a `std::string_view` (C++17)
+    - a `std::string`
    - a container `obj` for which `begin(obj)` and `end(obj)` produce a valid pair of iterators
      (as found via ADL or member functions, with semantics compatible to `std::begin` and `std::end`)
    - wide characters (`wchar_t`, `char16_t`, `char32_t`), which are converted to UTF-8: a wide string object
      (`std::wstring`, `std::u16string`, `std::u32string`) or an array (e.g. a wide string literal); a pointer to a
      null-terminated wide string (e.g. `std::u16string::c_str()`) is not supported
 `IteratorType`
 :   a compatible iterator type, for instance.
@@ -131,21 +125,6 @@ outside of a string, invalid) byte; see the [FAQ entry](../../home/faq.md#nul-by
    --8<-- "examples/accept__iterator_pair.output"
    ```
 ??? example "Example: (3) reading from UTF-16 strings"
    The encoding is deduced from the character type of the input. String literals like `u"..."`, `U"..."`, and
    `L"..."` work as well.
    ```cpp
    --8<-- "examples/accept__wide_string.cpp"
    ```
    Output:
    ```json
    --8<-- "examples/accept__wide_string.output"
    ```
 ## See also
 - [parse](parse.md) - deserialize from a compatible input
@@ -172,9 +151,6 @@ outside of a string, invalid) byte; see the [FAQ entry](../../home/faq.md#nul-by
  ([`JSON_DISABLE_STREAM_BULK_SCAN`](../macros/json_disable_stream_bulk_scan.md)).
 - Parsing from a `FILE*` locks the file once instead of once per character in version 3.13.0
  ([`JSON_DISABLE_UNLOCKED_FILE_IO`](../macros/json_disable_unlocked_file_io.md)).
 - Ill-formed UTF-16 and UTF-32 input (a lone surrogate, a high surrogate that is not followed by its low surrogate, or
  a code point above `U+10FFFF`) is rejected in version 3.13.0; before that, some such sequences were accepted or
  ended the input silently.
 !!! warning "Deprecation"
@@ -239,8 +239,9 @@ Strong exception safety: if an exception occurs, the original value stays intact
 1. Added in version 1.0.0.
 2. Added in version 1.0.0.
-3. Added in version 3.11.0. Support for keys convertible to `std::string_view` added in version 3.13.0, consistently
+3. Added in version 3.11.0. Fixed in version 3.13.0 to consistently accept `std::string_view`-convertible keys, as
-   across the lookup functions.
+   already supported by [`operator[]`](operator[].md), [`value`](value.md), [`find`](find.md), and other lookup
   functions.
 4. Added in version 2.0.0. Throws [`parse_error.109`](../../home/exceptions.md#jsonexceptionparse_error109) instead of
 [`out_of_range.404`](../../home/exceptions.md#jsonexceptionout_of_range404) for a one-character array index that is not
 a digit (e.g., `/x`) in version 3.13.0, as it already did for longer ones.
@@ -63,4 +63,4 @@ Constant.
 ## Version history
 - Added in version 1.0.0.
- Binary values are supported since version 3.8.0.
+- Adjusted code to return reference to binary values in version 3.8.0.
@@ -482,15 +482,17 @@ basic_json(basic_json&& other) noexcept;
 ## Version history
-1. Added in version 1.0.0.
+1. Since version 1.0.0.
-2. Added in version 1.0.0.
+2. Since version 1.0.0.
-3. Added in version 2.1.0.
+3. Since version 2.1.0.
-4. Added in version 3.1.2. Explicit for different string types if `JSON_USE_IMPLICIT_CONVERSIONS` is `0` since
+4. Since version 3.2.0. Also initializes the position reported by
-   version 3.13.0.
+   [`start_pos()`](start_pos.md)/[`end_pos()`](end_pos.md) from `val` when
-5. Added in version 1.0.0.
+   [`JSON_DIAGNOSTIC_POSITIONS`](../macros/json_diagnostic_positions.md) is enabled, since version 3.12.0. Explicit
-6. Added in version 1.0.0.
+   for different string types if `JSON_USE_IMPLICIT_CONVERSIONS` is `0` since version 3.13.0.
-7. Added in version 1.0.0. Fixed in version 3.13.0 to also check the iterator range for binary values; before, a range
+5. Since version 1.0.0.
 6. Since version 1.0.0.
 7. Since version 1.0.0. Fixed in version 3.13.0 to also check the iterator range for binary values; before, a range
   that did not cover the whole value (such as `(end(), end())`) was accepted and the whole binary value was copied,
   unlike the other primitive types.
-8. Added in version 1.0.0.
+8. Since version 1.0.0.
-9. Added in version 1.0.0.
+9. Since version 1.0.0.
@@ -90,9 +90,8 @@ type `#!cpp binary_t*` must be dereferenced.
 - MessagePack
    - If a subtype is given and the binary array contains exactly 1, 2, 4, 8, or 16 elements, the fixext family (fixext1,
-      fixext2, fixext4, fixext8, fixext16) is used. For other sizes, the ext family (ext8, ext16, ext32) is used. The
+      fixext2, fixext4, fixext8) is used. For other sizes, the ext family (ext8, ext16, ext32) is used. The subtype is
-      subtype is then written as the signed 8-bit ext type: subtypes 128 to 255 map to the negative (reserved) ext
+      then added as a signed 8-bit integer.
      types, and on reading the ext type is exposed as an unsigned subtype from 0 to 255.
    - If no subtype is given, the bin family (bin8, bin16, bin32) is used.
 - BSON
@@ -4,29 +4,24 @@
 enum class bjdata_version_t
 {
    draft2,
-    draft3
+    draft3,
 };
 ```
-This enumeration is used in [`to_bjdata`](to_bjdata.md) to choose the version of the BJData specification to write:
+This enumeration is used in the [`to_bjdata`](to_bjdata.md) function to choose which draft version of
 the BJData specification to encode ND-array extensions for:
 draft2
-:   BJData Draft 2 (the default). Binary values are written as arrays of `U` integers, and ND-arrays with
+:   encode using the BJData Draft 2 ND-array format
    `"_ArrayType_": "byte"` are written as regular objects, since the `B` marker is not part of Draft 2.
 draft3
-:   BJData Draft 3. Binary values are written as `B` elements: as an optimized binary array (`[$B#`) if both `use_size`
+:   encode using the BJData Draft 3 ND-array format
    and `use_type` are set, and as an array of `B`-prefixed elements otherwise. ND-arrays with
    `"_ArrayType_": "byte"` are written as packed arrays (`[$B#[...]`).
 Only the writer is affected by the version. [`from_bjdata`](from_bjdata.md) reads the markers of both drafts.
 ## Examples
 ??? example
-    The example below shows how the different values of the `bjdata_version_t` influence the serialization of a binary
+    The example shows how `bjdata_version_t` selects the BJData draft used by `to_bjdata`.
    value with [`to_bjdata`](to_bjdata.md).
    ```cpp
    --8<-- "examples/bjdata_version_t.cpp"
@@ -34,15 +29,10 @@ Only the writer is affected by the version. [`from_bjdata`](from_bjdata.md) read
    Output:
-    ```json
+    ```
    --8<-- "examples/bjdata_version_t.output"
    ```
 ## See also
 - [to_bjdata](to_bjdata.md) serializes a JSON value to BJData
 - [BJData](../../features/binary_formats/bjdata.md) - the article on the BJData format
 ## Version history
 - Added in version 3.12.0.
@@ -15,13 +15,11 @@ error
 :   report a parse error in case of a tag (the `from_cbor` overloads throw a `parse_error` exception by default)
 ignore
-:   ignore tags (also in front of a text string map key)
+:   ignore tags
 store
 :   store tagged byte strings (for bytes 0xd8..0xdb) as binary values with the tag as subtype; other tagged values are
-    read as if the tag were ignored. If several tags precede a byte string, only the tag directly in front of it is
+    read as if the tag were ignored. If several tags precede a byte string, only the innermost one is stored.
    stored, and only when it has the form 0xd8..0xdb (a tag 0..23 written as 0xc0..0xd7 is skipped). Tags in front of a
    text string map key are skipped.
 ## Examples
@@ -61,18 +61,11 @@ Strong exception safety: if an exception occurs, the original value stays intact
 ## Complexity
-1. Logarithmic in the size of the JSON object.
+Logarithmic in the size of the JSON object.
 2. Logarithmic in the size of the JSON object.
 3. At most one lookup per reference token of `ptr`, each logarithmic in the size of the container at that level:
   O(*n* log *m*) for *n* reference tokens and containers of size at most *m*.
 4. Deleted; a call with an integral argument does not compile.
 ## Notes
- Overloads (1) and (2) always return `#!cpp false` when executed on a JSON type that is not an object. Overload (3)
+- This method always returns `#!cpp false` when executed on a JSON type that is not an object.
  also works on arrays and on primitive values: the empty JSON pointer resolves in every JSON value (so
  `#!cpp json(1).contains(""_json_pointer)` returns `#!cpp true`), and `#!cpp json({1, 2}).contains("/1"_json_pointer)`
  returns `#!cpp true`.
 - This method can be executed on any JSON value type.
 - Calling this function with an integer argument (for example, `#!cpp contains(0)`) does not compile: such an argument
  would otherwise implicitly convert to a null `#!cpp const char*` and, from there, cause undefined behavior when
@@ -148,8 +141,9 @@ Strong exception safety: if an exception occurs, the original value stays intact
 ## Version history
 1. Added in version 3.11.0.
-2. Added in version 3.6.0. Extended template `KeyType` to support comparable types in version 3.11.0. Support for keys
+2. Added in version 3.6.0. Extended template `KeyType` to support comparable types in version 3.11.0. Fixed in
-   convertible to `std::string_view` added in version 3.13.0, consistently across the lookup functions.
+   version 3.13.0 to consistently accept `std::string_view`-convertible keys, as already supported by
   [`operator[]`](operator[].md), [`at`](at.md), [`value`](value.md), and other lookup functions.
 3. Added in version 3.7.0.
 4. Deleted overloads for integral key types added in version 3.13.0 to reject such calls at compile time instead of
   causing undefined behavior at runtime.
@@ -92,7 +92,8 @@ Logarithmic in the size of the JSON object.
 ## Version history
 1. Added in version 3.11.0.
-2. Added in version 1.0.0. Changed to support comparable key types in version 3.11.0. Support for keys convertible to
+2. Added in version 1.0.0. Changed parameter `key` type to `KeyType&&` in version 3.11.0. Fixed in version 3.13.0 to
-   `std::string_view` added in version 3.13.0, consistently across the lookup functions.
+   consistently accept `std::string_view`-convertible keys, as already supported by [`operator[]`](operator[].md),
   [`at`](at.md), [`value`](value.md), and other lookup functions.
 3. Deleted overload for integral key types added in version 3.13.0 to reject such calls at compile time instead of
   causing undefined behavior at runtime.
@@ -2,27 +2,17 @@
 ```cpp
 static basic_json diff(const basic_json& source,
-                       const basic_json& target,
+                       const basic_json& target);
                       const string_t& path = "");
 ```
 Creates a [JSON Patch](http://jsonpatch.com) so that value `source` can be changed into the value `target` by calling
 [`patch`](patch.md) function.
-For two JSON values `source` and `target`, the following code yields `#!cpp true`:
+For two JSON values `source` and `target`, the following code always yields `#!cpp true`:
 ```cpp
 source.patch(diff(source, target)) == target;
 ```
 The equality holds up to [`operator==`](operator_eq.md), so it has the following exceptions:
 - A value that is not equal to itself cannot round-trip. This applies to `NaN` (also nested in an array or object) and
  to [discarded](is_discarded.md) values: `diff` emits a `replace` operation for them. A `NaN` in the patch is
  serialized as `#!json null`, so a patch that was dumped and parsed again would set `#!json null`.
 - Numbers that compare equal produce no operation, even if their types or signs differ: `diff(1, 1.0)`,
  `diff(1u, 1)` (unsigned and signed integer) and `diff(0.0, -0.0)` all return `#!json []`. The patched value is then
  the `source` and keeps its number type.
 ## Parameters
 `source` (in)
@@ -31,12 +21,6 @@ The equality holds up to [`operator==`](operator_eq.md), so it has the following
 `target` (in)
 :   JSON value to compare against
 `path` (in)
 :   a prefix that is put verbatim in front of the `path` member of every operation (default: `""`, which addresses the
    root of the value). The prefix is neither escaped nor validated: `#!cpp diff(1, 2, "abc")` yields an operation with
    the `path` `abc`, which is not a valid JSON Pointer. Use it with a valid JSON Pointer such as `/root` and escape
    `~` and `/` in its reference tokens (see [JSON Pointer](../../features/json_pointer.md)).
 ## Return value
 a JSON patch to convert the `source` to `target`
@@ -47,32 +31,11 @@ Strong guarantee: `source` and `target` are never modified.
 ## Complexity
-Linear in the total number of values (including nested ones) in `source` and `target`, times the cost of a key-based
+Linear in the lengths of `source` and `target`.
 object operation (looking up a key in an object): logarithmic for [`json`](../json.md), and linear for
 [`ordered_json`](../ordered_json.md) (see [`ordered_map` complexity](../ordered_map.md#complexity)). For
 `ordered_json`, diffing two objects with `n` and `m` members therefore takes O((n+m)²) when their keys do not line up
 (e.g., a key was added or the keys are in a different order). The size of the patch is proportional to the number of
 operations times the length of their paths, so a small change deep inside a value yields a long `path`.
 ## Notes
- Currently, only `remove`, `add`, and `replace` operations are generated.
+Currently, only `remove`, `add`, and `replace` operations are generated.
 - The patch is correct, but not guaranteed to be minimal. For instance, `diff([1,2,3], [0,1,2,3])` yields three
  `replace` operations and one `add` operation instead of a single insertion.
 - Differences between two arrays are reported index by index. Elements that were added at the end of the array are added
  with `add` operations on the path `/-` (appended in order), and elements that were removed are removed with `remove`
  operations from the highest index down to the lowest, so that the remaining indices stay valid.
 - For objects, the operations for the members of `source` come first (`replace`, `remove`, or the operations for nested
  values, in the iteration order of `source`), followed by `add` operations for the members that only `target` has.
 - For [`ordered_json`](../ordered_json.md), objects with the same keys in a different order are different. As a patch
  cannot reorder members, `diff` removes all keys of the `source` object and adds them again in the order of the
  `target`.
 - If `source` and `target` differ as a whole (e.g., different types), the patch consists of a single `replace`
  operation for the root of the value, i.e., with the `path` `""` (or the given `path` prefix).
 - The `value` members of the patch hold copies of values of `target`. A [binary](../../features/binary_values.md) value
  has no JSON representation: when a patch that contains one is serialized, it becomes an object such as
  `#!json {"bytes":[1,3],"subtype":null}`, so a parsed patch no longer holds a binary value (and would set that object
  instead).
 ## Examples
@@ -69,6 +69,6 @@ Logarithmic in the size of the container, O(log(`size()`)).
 ## Version history
- Added in version 2.0.8.
+- Since version 2.0.8.
 - Fixed in version 3.13.0: for [`ordered_json`](../ordered_json.md), the value could previously only be passed as an
  rvalue; it can now also be passed as an lvalue or a `#!cpp const` lvalue, matching the behavior of `json`.
@@ -67,5 +67,5 @@ Amortized constant.
 ## Version history
- Added in version 2.0.8.
+- Since version 2.0.8.
 - Returns reference since 3.7.0.
@@ -213,6 +213,7 @@ Strong exception safety: if an exception occurs, the original value stays intact
 1. Added in version 1.0.0. Added support for binary types in version 3.8.0.
 2. Added in version 1.0.0. Added support for binary types in version 3.8.0.
 3. Added in version 1.0.0.
-4. Added in version 3.11.0. Support for keys convertible to `std::string_view` added in version 3.13.0, consistently
+4. Added in version 3.11.0. Fixed in version 3.13.0 to consistently accept `std::string_view`-convertible keys, as
-   across the lookup functions.
+   already supported by [`operator[]`](operator[].md), [`at`](at.md), [`value`](value.md), and other lookup
   functions.
 5. Added in version 1.0.0.
@@ -84,4 +84,4 @@ constructor.
 ## Version history
- Added in version 3.0.0.
+- Since version 3.0.0.
@@ -99,7 +99,8 @@ Logarithmic in the size of the JSON object.
 ## Version history
 1. Added in version 3.11.0.
-2. Added in version 1.0.0. Changed to support comparable types in version 3.11.0. Support for keys convertible to
+2. Added in version 1.0.0. Changed to support comparable types in version 3.11.0. Fixed in version 3.13.0 to
-   `std::string_view` added in version 3.13.0, consistently across the lookup functions.
+   consistently accept `std::string_view`-convertible keys, as already supported by [`operator[]`](operator[].md),
   [`at`](at.md), [`value`](value.md), and other lookup functions.
 3. Deleted overloads for integral key types added in version 3.13.0 to reject such calls at compile time instead of
   causing undefined behavior at runtime.
@@ -82,11 +82,8 @@ Strong guarantee: if an exception is thrown, there are no changes in the JSON va
 - Throws [parse_error.112](../../home/exceptions.md#jsonexceptionparse_error112) if a parse error occurs
 - Throws [parse_error.113](../../home/exceptions.md#jsonexceptionparse_error113) if a string could not be parsed
  successfully, or if a string value or object key is not valid UTF-8 and `error_handler` is `strict`
 - Throws [parse_error.115](../../home/exceptions.md#jsonexceptionparse_error115) if the text of a high-precision
  number (`H`) is not a valid number
 - Throws [out_of_range.408](../../home/exceptions.md#jsonexceptionout_of_range408) if the size of an optimized container
-  cannot be represented by `std::size_t` or exceeds the container's `max_size()`, or if the product of the dimensions of
+  or n-dimensional array cannot be represented by `std::size_t`
  an n-dimensional array overflows
 ## Complexity
@@ -74,11 +74,6 @@ Strong guarantee: if an exception is thrown, there are no changes in the JSON va
 - Throws [parse_error.112](../../home/exceptions.md#jsonexceptionparse_error112) if a parse error occurs, for instance
  an invalid byte, a string that is not valid UTF-8, or an object key that is not a string
 The UTF-8 validity of strings is always checked, independent of
 [`JSON_STRICT_BINARY_UTF8`](../macros/json_strict_binary_utf8.md), because the end of a BON8 string is determined from
 its encoding. Duplicate object keys are accepted; the last value wins (see
 [BON8](../../features/binary_formats/bon8.md)).
 ## Complexity
 Linear in the size of the input.
@@ -80,8 +80,7 @@ Strong guarantee: if an exception is thrown, there are no changes in the JSON va
 - Throws [`parse_error.110`](../../home/exceptions.md#jsonexceptionparse_error110) if the given input ends prematurely or
  the end of the input was not reached when `strict` was set to true
 - Throws [`parse_error.112`](../../home/exceptions.md#jsonexceptionparse_error112) if a parse error occurs (e.g., an
-  invalid string or byte array length, an invalid inner length of a binary value with subtype `0x02`, or a document size
+  invalid string or byte array length)
  that does not match the content; `strict` does not affect the document size checks)
 - Throws [`parse_error.114`](../../home/exceptions.md#jsonexceptionparse_error114) if an unsupported BSON record type is
  encountered
 - Throws [`parse_error.113`](../../home/exceptions.md#jsonexceptionparse_error113) if a string value or object key is
@@ -32,10 +32,8 @@ The exact mapping and its limitations are described on a [dedicated page](../../
    - an `std::istream` object
    - a `FILE` pointer
-    - a C-style array of characters (its terminating NUL is read as trailing data: `parse_error.110` unless `strict` is
+    - a C-style array of characters
-      `false`)
+    - a pointer to a null-terminated string of single byte characters
    - a pointer to a null-terminated string of single byte characters (read up to the first 0x00 byte, which is a valid
      CBOR byte)
    - a container `obj` for which `begin(obj)` and `end(obj)` produce a valid pair of iterators
      (as found via ADL or member functions, with semantics compatible to `std::begin` and `std::end`)
@@ -91,14 +89,8 @@ Strong guarantee: if an exception is thrown, there are no changes in the JSON va
 - Throws [parse_error.112](../../home/exceptions.md#jsonexceptionparse_error112) if unsupported features from CBOR were
  used in the given input or if the input is not valid CBOR
 - Throws [parse_error.113](../../home/exceptions.md#jsonexceptionparse_error113) if a map key is not a string (keys of
-  other types are not supported, as JSON object keys are always strings), if the head of a string or byte string is
+  other types are not supported, as JSON object keys are always strings), or if a string value or object key is not
-  malformed (including a chunk of the wrong type or an indefinite-length string nested inside an indefinite-length
+  valid UTF-8 and `error_handler` is `strict`
  string), or if a string value or object key (or one chunk of an indefinite-length string) is not valid UTF-8 and
  `error_handler` is `strict`
 - Throws [out_of_range.408](../../home/exceptions.md#jsonexceptionout_of_range408) if an array or map announces
  a length that `std::size_t` cannot hold, or that equals `std::size_t(-1)` (for example `9B FF FF FF FF FF FF FF FF`)
 - Throws [out_of_range.406](../../home/exceptions.md#jsonexceptionout_of_range406) if a floating-point number does not
  fit into `number_float_t`
 ## Complexity
@@ -79,18 +79,11 @@ Strong guarantee: if an exception is thrown, there are no changes in the JSON va
 - Throws [parse_error.110](../../home/exceptions.md#jsonexceptionparse_error110) if the given input ends prematurely or
  the end of the file was not reached when `strict` was set to true
- Throws [parse_error.112](../../home/exceptions.md#jsonexceptionparse_error112) if an invalid type marker is read
+- Throws [parse_error.112](../../home/exceptions.md#jsonexceptionparse_error112) if a parse error occurs
  (including a type marker after `$` of an optimized container, even if its count is 0), or if `$` is not followed by `#`
 - Throws [parse_error.113](../../home/exceptions.md#jsonexceptionparse_error113) if a string could not be parsed
-  successfully (negative or non-integer length, `C` followed by a byte above 0x7F), if the count of an optimized
+  successfully, or if a string value or object key is not valid UTF-8 and `error_handler` is `strict`
-  container is negative, or if a string value or object key is not valid UTF-8 and `error_handler` is `strict`
+- Throws [out_of_range.408](../../home/exceptions.md#jsonexceptionout_of_range408) if the size of an optimized container
- Throws [parse_error.115](../../home/exceptions.md#jsonexceptionparse_error115) if the text of a high-precision number
+  or n-dimensional array cannot be represented by `std::size_t`
  (`H`) is not a valid JSON number
 - Throws [out_of_range.406](../../home/exceptions.md#jsonexceptionout_of_range406) if a high-precision number, or a
  float64 when `number_float_t` is `float`, does not fit into `number_float_t`
 - Throws [out_of_range.408](../../home/exceptions.md#jsonexceptionout_of_range408) if the count of an optimized
  container exceeds the capacity of the container (or of `std::size_t`), or if an optimized array of `Z`, `T`, or `F` has
  more than 1,048,576 elements
 ## Complexity
@@ -57,4 +57,4 @@ Constant.
 ## Version history
 - Added in version 1.0.0.
- Binary values are supported since version 3.8.0.
+- Adjusted code to return reference to binary values in version 3.8.0.
@@ -188,6 +188,6 @@ overload (3).
 ## Version history
-1. Added in version 2.1.0.
+1. Since version 2.1.0.
-2. Added in version 2.1.0. Extended to work with other specializations of `basic_json` in version 3.1.2.
+2. Since version 2.1.0. Extended to work with other specializations of `basic_json` in version 3.2.0.
-3. Added in version 1.0.0.
+3. Since version 1.0.0.
@@ -45,7 +45,7 @@ Constant.
    #include <iostream>
    #include <nlohmann/json.hpp>
-    using nlohmann::json;
+    using json = nlohmann::json;
    int main()
    {
@@ -76,5 +76,5 @@ Depends on the `json_serializer<ValueType>::from_json()` implementation.
 ## Version history
- Added in version 3.3.0.
+- Since version 3.3.0.
 - Added a `static_assert` with a clear message for `const` arguments in version 3.13.0.
@@ -44,22 +44,6 @@ are collected in [Template Parameter Requirements](../../features/types/template
 - [**json**](../json.md) - default specialization
 - [**ordered_json**](../ordered_json.md) - a specialization that maintains the insertion order of object keys
 ## Documents and views
 Besides `basic_json`, the library offers a second way to hold a parsed JSON text: a
 [`basic_json_document`](../basic_json_document/index.md), which owns or borrows the text and holds a flat index of the
 values in it, and a [`basic_json_view`](../basic_json_view/index.md), a read-only handle to one value of such a document.
 Both are defined in the header `<nlohmann/json_view.hpp>`; see
 [Zero-copy JSON views](../../features/json_view.md) for the concept and the trade-offs.
 - [**json_document**](../json_document.md) / [**ordered_json_document**](../ordered_json_document.md) - read-only
  documents of the `basic_json` specialization they belong to
 - [**json_editable_document**](../json_editable_document.md) /
  [**ordered_json_editable_document**](../ordered_json_editable_document.md) - documents that can be modified in place
 - [**json_view**](../json_view.md) / [**ordered_json_view**](../ordered_json_view.md) - views of a document
 - [**json_editable_view**](../json_editable_view.md) /
  [**ordered_json_editable_view**](../ordered_json_editable_view.md) - views of an editable document
 ## Iterator invalidation
 All operations that add values to an **array** ([`push_back`](push_back.md) , [`operator+=`](operator+=.md),
@@ -121,7 +105,6 @@ The class satisfies the following concept requirements:
 - [**json_pointer**](../json_pointer/index.md) - JSON Pointer implementation
 - [**json_serializer**](json_serializer.md) - type of the serializer to for conversions from/to JSON
 - [**error_handler_t**](error_handler_t.md) - type to choose behavior on decoding errors
 - [**bjdata_version_t**](bjdata_version_t.md) - type to choose the BJData version to write
 - [**cbor_tag_handler_t**](cbor_tag_handler_t.md) - type to choose how to handle CBOR tags
 - **initializer_list_t** - type for initializer lists of `basic_json` values
 - [**input_format_t**](input_format_t.md) - type to choose the format to parse
@@ -360,9 +343,6 @@ Access to the JSON value
 ## See also
 - [RFC 8259: The JavaScript Object Notation (JSON) Data Interchange Format](https://tools.ietf.org/html/rfc8259)
 - [basic_json_document](../basic_json_document/index.md) / [basic_json_view](../basic_json_view/index.md) - parse a JSON
  text into a flat index and read it through a view
 - [Zero-copy JSON views](../../features/json_view.md) - when to use a document and a view instead of a `basic_json`
 ## Version history
@@ -0,0 +1,32 @@
 # <small>nlohmann::basic_json::</small>initializer_list_t
 ```cpp
 using initializer_list_t = std::initializer_list<detail::json_ref<basic_json>>;
 ```
 The type used for the initializer-list [constructor](basic_json.md) (overload 5) and for functions
 such as [`operator=`](operator=.md) that accept a braced-init-list of JSON values. Each element wraps a
 `basic_json` value or something convertible to one, deferring the decision of whether the list should be
 parsed as a JSON array or a JSON object to the constructor itself.
 See the [constructor](basic_json.md) documentation for how `initializer_list_t` values are interpreted.
 ## Examples
 ??? example
    The example shows how an `initializer_list_t` is used to construct a JSON value.
    ```cpp
    --8<-- "examples/initializer_list_t.cpp"
    ```
    Output:
    ```
    --8<-- "examples/initializer_list_t.output"
    ```
 ## Version history
 - Since version 1.0.0.
@@ -75,4 +75,4 @@ classDiagram
 ## Version history
- Added in version 3.0.0.
+- Since version 3.0.0.
@@ -104,8 +104,8 @@ When iterating over an array, `key()` will return the index of the element as st
 ## Version history
- Added in version 3.1.0 as the replacement of the static function `iterator_wrapper`, which was available since
+- Added `iterator_wrapper` in version 3.0.0.
-  version 1.0.0 and is deprecated since version 3.1.0.
+- Added `items` and deprecated `iterator_wrapper` in version 3.1.0.
 - Added structured binding support in version 3.5.0.
 !!! warning "Deprecation"
@@ -0,0 +1,31 @@
 # <small>nlohmann::basic_json::</small>json_sax_t
 ```cpp
 using json_sax_t = json_sax<basic_json>;
 ```
 The [`json_sax`](../json_sax/index.md) interface bound to this `basic_json` specialization, i.e. with
 `BasicJsonType` fixed to `basic_json`. Used as the SAX interface type by [`sax_parse`](sax_parse.md) and
 other SAX-based parsing functions.
 See [`nlohmann::json_sax`](../json_sax/index.md) for more information.
 ## Examples
 ??? example
    The example shows the type `json_sax_t`.
    ```cpp
    --8<-- "examples/json_sax_t.cpp"
    ```
    Output:
    ```
    --8<-- "examples/json_sax_t.output"
    ```
 ## Version history
 - Added in version 3.2.0.
@@ -51,4 +51,4 @@ deserializes. See [Template Parameter Requirements](../../features/types/templat
 ## Version history
- Added in version 2.1.0.
+- Since version 2.0.0.
@@ -38,7 +38,7 @@ Strong guarantee: `source` and `target` are never modified.
 Linear in the total number of values (including nested ones) in `source` and `target`, times the cost of a key-based
 object operation (looking up a key, or adding one to the patch): logarithmic for [`json`](../json.md), and linear for
-[`ordered_json`](../ordered_json.md) (see [`ordered_map` complexity](../ordered_map.md#complexity)). For
+[`ordered_json`](../ordered_json.md) (see [`ordered_map` complexity](../ordered_map/index.md#complexity)). For
 `ordered_json`, diffing two objects with `n` and `m` members therefore takes O((n+m)²).
 ## Notes
@@ -39,33 +39,13 @@ Basic guarantee: if an exception is thrown during the operation, the JSON value
 ## Complexity
-Linear in the total number of values (including nested ones) in `apply_patch`, times the cost of a key-based object
+Linear in the lengths of `apply_patch`.
 operation (looking up, adding, or erasing a member): logarithmic for [`json`](../json.md), and linear for
 [`ordered_json`](../ordered_json.md) (see [`ordered_map` complexity](../ordered_map.md#complexity)). For
 `ordered_json`, patching an object that has `n` members with a patch that has `m` members therefore takes O(n·m). The
 cost also includes one copy of `apply_patch` (see the notes below).
 ## Notes
- `apply_patch` may be `#!cpp *this` itself or refer to a value contained in `#!cpp *this` (for example, a subobject
+`apply_patch` may be `#!cpp *this` itself or refer to a value contained in `#!cpp *this` (for example, a subobject
-  returned by `#!cpp (*this)[key]`); it is read as it was when `merge_patch()` was called, before any modification of
+returned by `#!cpp (*this)[key]`); it is read as it was when `merge_patch()` was called, before any modification of
-  `#!cpp *this`. To make this possible, the function copies `apply_patch` before it modifies `#!cpp *this`, so the cost
+`#!cpp *this`.
  includes one copy of the patch.
 - A merge patch uses `#!json null` to remove a member, so it cannot set a member to `#!json null`: applying
  `#!json {"a":null}` to `#!json {"a":1}` gives `#!json {}`.
 - Arrays are not merged: an array in the patch replaces the target value as a whole, and a `#!json null` inside an
  array is kept as an element. `#!json null` members of the target that the patch does not mention are preserved.
 - A `#!json null` in the patch only removes a member; it does not prevent the creation of the enclosing objects.
  Applying `#!json {"a":{"b":null}}` to `#!json {}` gives `#!json {"a":{}}` (see example 15 in Appendix A of the RFC).
 - If `apply_patch` is not an object, it replaces the target as a whole. In particular, a `#!json null` patch turns the
  target into `#!json null`. If `apply_patch` is an object and the target is not, the target is first replaced by an
  empty object, so applying `#!json {}` to `#!json 1` gives `#!json {}`.
 - A merge patch cannot express every change; for example, it cannot reorder array elements or remove a specific array
  element. Use [JSON Patch](../../features/json_patch.md) ([RFC 6902](https://tools.ietf.org/html/rfc6902)) for that.
  [`merge_diff`](merge_diff.md) has a matching limitation, see its notes.
 - A [discarded](is_discarded.md) value is treated like any other non-object value: a discarded
  `apply_patch` turns the target into a discarded value, and an object patch replaces a discarded target by an object
  as described above.
 ## Examples
@@ -91,6 +71,6 @@ cost also includes one copy of `apply_patch` (see the notes below).
 ## Version history
- Added in version 3.1.0.
+- Added in version 3.0.0.
 - Fixed use of freed or relocated memory when `apply_patch` is `#!cpp *this` or refers to a value contained in
  `#!cpp *this`, in version 3.13.0.
@@ -128,6 +128,6 @@ interpreted as `object_t::value_type` or `std::initializer_list<basic_json>`, se
 ## Version history
-1. Added in version 1.0.0.
+1. Since version 1.0.0.
-2. Added in version 1.0.0.
+2. Since version 1.0.0.
-3. Added in version 2.0.0.
+3. Since version 2.0.0.
@@ -51,3 +51,5 @@ Linear.
 ## Version history
 - Added in version 1.0.0.
 - The `noexcept` specification was extended to also depend on
  [`json_base_class_t`](json_base_class_t.md)'s move-assignment in version 3.11.3.
@@ -137,13 +137,10 @@ Strong exception safety: if an exception occurs, the original value stays intact
        When the JSON pointer traverses intermediate levels that don't exist at all yet (not just a missing
        leaf), each missing level is created as an array or an object depending on whether the corresponding
-        pointer token is a valid array index: the token `0`, a sequence of digits that does not begin with `0`,
+        pointer token parses as a non-negative integer: a numeric token creates an array, a non-numeric token
-        or the token `-` creates an array, and every other token creates an object. For example, on an
+        creates an object. For example, on an initially `#!json null` value, `/foo/0/0/0` creates nested arrays,
-        initially `#!json null` value, `/foo/0/0/0` creates nested arrays, while `/foo/one/one/one` creates
+        while `/foo/one/one/one` creates nested objects. This is not specified by the JSON Pointer RFC; it is
-        nested objects. Tokens such as `01` or the empty token cannot be array indices (cf. RFC 6901, Sect. 4)
+        this library's own, intentional disambiguation rule. See also [JSON Pointer](../../features/json_pointer.md).
        and therefore create objects, just as they would if the level already existed as an object. This is not
        specified by the JSON Pointer RFC; it is this library's own, intentional disambiguation rule. See also
        [JSON Pointer](../../features/json_pointer.md).
 !!! warning "Deprecation"
@@ -287,10 +284,10 @@ Strong exception safety: if an exception occurs, the original value stays intact
 1. Added in version 1.0.0. Fixed in version 3.13.0 to throw `#!cpp std::length_error` instead of emptying the array and
   accessing it out of bounds when `idx` equals the maximum value of `size_type`. A missing index in the const version
   is guarded by a runtime assertion since version 3.13.0.
-2. Added in version 1.0.0. Added overloads for `T* key` in version 1.1.0. The `T* key` overloads forward to
+2. Added in version 1.0.0. Added overloads for `T* key` in version 1.1.0. Removed overloads for `T* key` (replaced by 3)
-   overload 3 since version 3.11.0.
+   in version 3.11.0.
-3. Added in version 3.11.0. Support for keys convertible to `std::string_view` added in version 3.13.0, consistently
+3. Added in version 3.11.0. Fixed in version 3.13.0 to consistently accept `std::string_view`-convertible keys, as
-   across the lookup functions.
+   already supported by [`at`](at.md), [`value`](value.md), [`find`](find.md), and other lookup functions.
 4. Added in version 2.0.0. A missing array index in the const version is guarded by a runtime assertion since
   version 3.13.0. Throws [`parse_error.109`](../../home/exceptions.md#jsonexceptionparse_error109) instead of
 [`out_of_range.404`](../../home/exceptions.md#jsonexceptionout_of_range404) for a one-character array index that is not
@@ -89,6 +89,11 @@ Linear in the size of the JSON value.
 ## Version history
- Added in version 1.0.0.
+- Since version 1.0.0.
 - Macros `JSON_EXPLICIT`/[`JSON_USE_IMPLICIT_CONVERSIONS`](../macros/json_use_implicit_conversions.md) added
  in version 3.9.0.
 - The exclusion of `std::any` from this conversion became conditional on
  [`JSON_HAS_STATIC_RTTI`](../macros/json_has_static_rtti.md) in version 3.11.3.
 - `std::optional<T>` excluded from this conversion in version 3.13.0; use
  [`get<std::optional<T>>()`](get.md)/[`get_to()`](get_to.md) instead (see
  [Converting values](../../features/conversions.md)).
@@ -75,4 +75,4 @@ classDiagram
 ## Version history
- Added in version 3.0.0.
+- Since version 3.0.0.
@@ -76,4 +76,4 @@ classDiagram
 ## Version history
- Added in version 3.0.0.
+- Since version 3.0.0.
@@ -25,10 +25,6 @@ static basic_json parse(IteratorType first, SentinelType last,
    respectively as UTF-8, UTF-16, and UTF-32. If `SentinelType` differs from `IteratorType`, it must be comparable to
    the iterator type with `operator!=`.
    Ill-formed UTF-16 and UTF-32 sequences are rejected: a lone surrogate, a high surrogate that is not followed by its
    low surrogate, and a code point above `U+10FFFF` all yield a
    [`parse_error.101`](../../home/exceptions.md#jsonexceptionparse_error101).
 ## Template parameters
 `InputType`
@@ -38,12 +34,9 @@ static basic_json parse(IteratorType first, SentinelType last,
    - a `FILE` pointer (throws if null)
    - a C-style array of characters
    - a pointer to a null-terminated string of single byte characters (throws if null)
-    - a `std::string` or a `std::string_view` (C++17)
+    - a `std::string`
    - a container `obj` for which `begin(obj)` and `end(obj)` produce a valid pair of iterators
      (as found via ADL or member functions, with semantics compatible to `std::begin` and `std::end`)
    - wide characters (`wchar_t`, `char16_t`, `char32_t`), which are converted to UTF-8: a wide string object
      (`std::wstring`, `std::u16string`, `std::u32string`) or an array (e.g. a wide string literal); a pointer to a
      null-terminated wide string (e.g. `std::u16string::c_str()`) is not supported
 `IteratorType`
 :   a compatible iterator type, for instance.
@@ -119,13 +112,6 @@ By default, a `'\0'` (NUL) byte anywhere in the input is treated as end of input
 outside of a string, invalid) byte; see the [FAQ entry](../../home/faq.md#nul-bytes-in-the-input) for details and the
 [`JSON_STRICT_NUL_HANDLING`](../macros/json_strict_nul_handling.md) macro to opt into rejecting it instead.
 !!! tip "Parsing into a document instead of a value"
    [`basic_json_document::parse`](../basic_json_document/parse.md) accepts the same inputs and the same options, but
    keeps the result as a flat index of the parsed values instead of a tree of `basic_json` values. It is faster and uses
    less memory when only parts of the document are read, and it also accepts a pointer to a null-terminated wide string,
    which `parse()` does not. See [Zero-copy JSON views](../../features/json_view.md).
 !!! tip "Performance"
    Contiguous inputs (strings, string views, vectors, arrays, pointer ranges) are the fastest to parse. A
@@ -264,22 +250,6 @@ outside of a string, invalid) byte; see the [FAQ entry](../../home/faq.md#nul-by
    --8<-- "examples/trailing_commas.output"
    ```
 ??? example "Example: parse from UTF-16, UTF-32, and wide strings"
    The encoding is deduced from the character type of the input; `std::u16string` and `std::u32string` are interpreted
    as UTF-16 and UTF-32, and `std::wstring` uses the platform's `wchar_t` width. String literals like `u"..."`,
    `U"..."`, and `L"..."` work as well, as do iterators over wide characters.
    ```cpp
    --8<-- "examples/parse__wide_string.cpp"
    ```
    Output:
    ```json
    --8<-- "examples/parse__wide_string.output"
    ```
 ## See also
 - [accept](accept.md) - check if the input is valid JSON
@@ -310,9 +280,6 @@ outside of a string, invalid) byte; see the [FAQ entry](../../home/faq.md#nul-by
  time).
 - Parsing from a `FILE*` locks the file once instead of once per character in version 3.13.0
  ([`JSON_DISABLE_UNLOCKED_FILE_IO`](../macros/json_disable_unlocked_file_io.md) restores `std::fgetc`).
 - Ill-formed UTF-16 and UTF-32 input (a lone surrogate, a high surrogate that is not followed by its low surrogate, or
  a code point above `U+10FFFF`) is rejected with `parse_error.101` in version 3.13.0; before that, some such
  sequences were accepted or ended the input silently.
 !!! warning "Deprecation"
@@ -84,4 +84,4 @@ or the end of file. This also holds true when reading a byte vector for binary f
 ## Version history
- Added in version 3.0.0.
+- Since version 3.0.0.
@@ -40,7 +40,7 @@ Strong guarantee: if an exception is thrown, there are no changes in the JSON va
  where an existing element is required (the "path" of "replace", the "from" of "move" and "copy"); example:
  `"array index '-' (3) is out of range"`.
 - Throws [`out_of_range.403`](../../home/exceptions.md#jsonexceptionout_of_range403) if a JSON pointer inside the patch
-  could not be resolved successfully in the current JSON value; example: `"key 'baz' not found"`.
+  could not be resolved successfully in the current JSON value; example: `"key baz not found"`.
 - Throws [`out_of_range.404`](../../home/exceptions.md#jsonexceptionout_of_range404) if a reference token of a JSON
  pointer inside the patch cannot be resolved, e.g., `-` in a "remove" operation or `1a` for an array; example:
  `"unresolved reference token '-'"`.
@@ -53,10 +53,7 @@ Strong guarantee: if an exception is thrown, there are no changes in the JSON va
 - Throws [`out_of_range.414`](../../home/exceptions.md#jsonexceptionout_of_range414) if a "move" operation's "from"
  location is a proper prefix of its "path" location.
 - Throws [`other_error.501`](../../home/exceptions.md#jsonexceptionother_error501) if "test" operation was
-  unsuccessful. A "test" operation whose "path" does not exist is unsuccessful, too: the failed lookup is reported as a
+  unsuccessful.
  failed test, even if the operation has no "value" member (which would otherwise be
  [`parse_error.105`](../../home/exceptions.md#jsonexceptionparse_error105)). Which of the two errors is reported for
  this combination depends on the order in which the operands of a comparison are evaluated, so do not rely on it.
 ## Complexity
@@ -68,10 +65,6 @@ the JSON value, the complexity can usually be neglected.
 The application of a patch is atomic: Either all operations succeed and the patched document is returned or an exception
 is thrown. In any case, the original value is not changed: the patch is applied to a copy of the value.
 Duplicate member names inside an operation object are resolved by the parser before the patch is applied (the last one
 is kept, see [`object_t`](object_t.md#behavior)), so `#!json {"op": "add", "op": "remove", "path": "/a"}` is a
 `remove` operation.
 ## Examples
 ??? example "Example: apply a JSON patch"
@@ -115,7 +108,6 @@ is kept, see [`object_t`](object_t.md#behavior)), so `#!json {"op": "add", "op":
 - Added in version 2.0.0.
 - Added [`out_of_range.411`](../../home/exceptions.md#jsonexceptionout_of_range411) and stopped relying on an internal assertion when an "add" operation's
  target location has a non-object/non-array parent in version 3.13.0.
  This includes a `null` parent, which was previously silently converted to an object, in version 3.13.0.
 - Added [`out_of_range.413`](../../home/exceptions.md#jsonexceptionout_of_range413) and stopped silently ignoring a "remove" operation whose target
  location has a non-object/non-array parent in version 3.13.0.
 - Added [`out_of_range.414`](../../home/exceptions.md#jsonexceptionout_of_range414) and rejected a "move" operation whose "from" location is a proper
@@ -36,7 +36,7 @@ No guarantees, value may be corrupted by an unsuccessful patch operation.
  where an existing element is required (the "path" of "replace", the "from" of "move" and "copy"); example:
  `"array index '-' (3) is out of range"`.
 - Throws [`out_of_range.403`](../../home/exceptions.md#jsonexceptionout_of_range403) if a JSON pointer inside the patch
-  could not be resolved successfully in the current JSON value; example: `"key 'baz' not found"`.
+  could not be resolved successfully in the current JSON value; example: `"key baz not found"`.
 - Throws [`out_of_range.404`](../../home/exceptions.md#jsonexceptionout_of_range404) if a reference token of a JSON
  pointer inside the patch cannot be resolved, e.g., `-` in a "remove" operation or `1a` for an array; example:
  `"unresolved reference token '-'"`.
@@ -49,10 +49,7 @@ No guarantees, value may be corrupted by an unsuccessful patch operation.
 - Throws [`out_of_range.414`](../../home/exceptions.md#jsonexceptionout_of_range414) if a "move" operation's "from"
  location is a proper prefix of its "path" location.
 - Throws [`other_error.501`](../../home/exceptions.md#jsonexceptionother_error501) if "test" operation was
-  unsuccessful. A "test" operation whose "path" does not exist is unsuccessful, too: the failed lookup is reported as a
+  unsuccessful.
  failed test, even if the operation has no "value" member (which would otherwise be
  [`parse_error.105`](../../home/exceptions.md#jsonexceptionparse_error105)). Which of the two errors is reported for
  this combination depends on the order in which the operands of a comparison are evaluated, so do not rely on it.
 ## Complexity
@@ -65,10 +62,6 @@ Unlike [`patch`](patch.md), `patch_inplace` applies the operation "in place" and
 That makes it faster for large documents by avoiding the copy. However, the JSON value might be corrupted if the
 function throws an exception.
 Duplicate member names inside an operation object are resolved by the parser before the patch is applied (the last one
 is kept, see [`object_t`](object_t.md#behavior)), so `#!json {"op": "add", "op": "remove", "path": "/a"}` is a
 `remove` operation.
 ## Examples
 ??? example "Example: apply a JSON patch in place"
@@ -113,7 +106,6 @@ is kept, see [`object_t`](object_t.md#behavior)), so `#!json {"op": "add", "op":
 - Added in version 3.11.0.
 - Added [`out_of_range.411`](../../home/exceptions.md#jsonexceptionout_of_range411) and stopped relying on an internal assertion when an "add" operation's
  target location has a non-object/non-array parent in version 3.13.0.
  This includes a `null` parent, which was previously silently converted to an object, in version 3.13.0.
 - Added [`out_of_range.413`](../../home/exceptions.md#jsonexceptionout_of_range413) and stopped silently ignoring a "remove" operation whose target
  location has a non-object/non-array parent in version 3.13.0.
 - Added [`out_of_range.414`](../../home/exceptions.md#jsonexceptionout_of_range414) and rejected a "move" operation whose "from" location is a proper
@@ -125,6 +125,6 @@ throws.
 ## Version history
-1. Added in version 1.0.0.
+1. Since version 1.0.0.
-2. Added in version 1.0.0.
+2. Since version 1.0.0.
-3. Added in version 2.0.0.
+3. Since version 2.0.0.
@@ -31,10 +31,6 @@ Read from input and generate SAX events
    respectively as UTF-8, UTF-16, and UTF-32. If `SentinelType` differs from `IteratorType`, it must be comparable to
    the iterator type with `operator!=`.
    Ill-formed UTF-16 and UTF-32 sequences are rejected: a lone surrogate, a high surrogate that is not followed by its
    low surrogate, and a code point above `U+10FFFF` all yield a
    [`parse_error.101`](../../home/exceptions.md#jsonexceptionparse_error101).
 The SAX event lister must follow the interface of [`json_sax`](../json_sax/index.md).
 ## Template parameters
@@ -46,12 +42,8 @@ The SAX event lister must follow the interface of [`json_sax`](../json_sax/index
    - a `FILE` pointer
    - a C-style array of characters
    - a pointer to a null-terminated string of single byte characters
    - a `std::string` or a `std::string_view` (C++17)
    - a container `obj` for which `begin(obj)` and `end(obj)` produce a valid pair of iterators
      (as found via ADL or member functions, with semantics compatible to `std::begin` and `std::end`)
    - wide characters (`wchar_t`, `char16_t`, `char32_t`), which are converted to UTF-8: a wide string object
      (`std::wstring`, `std::u16string`, `std::u32string`) or an array (e.g. a wide string literal); a pointer to a
      null-terminated wide string (e.g. `std::u16string::c_str()`) is not supported
 `IteratorType`
 :   a compatible iterator type for overload (2); a pair of character iterators whose `value_type` is an integral type
@@ -168,9 +160,6 @@ use the same file with stdio functions, but it must not wait for another thread
  ([`JSON_DISABLE_STREAM_BULK_SCAN`](../macros/json_disable_stream_bulk_scan.md)).
 - Parsing from a `FILE*` locks the file once instead of once per character in version 3.13.0
  ([`JSON_DISABLE_UNLOCKED_FILE_IO`](../macros/json_disable_unlocked_file_io.md)).
 - Ill-formed UTF-16 and UTF-32 input (a lone surrogate, a high surrogate that is not followed by its low surrogate, or
  a code point above `U+10FFFF`) is rejected with `parse_error.101` in version 3.13.0; before that, some such
  sequences were accepted or ended the input silently.
 !!! warning "Deprecation"
@@ -182,10 +182,10 @@ Constant.
 ## Version history
-1. Added in version 1.0.0. Exchanges the `json_base_class_t` subobject along with the value since version 3.13.0.
+1. Since version 1.0.0. Exchanges the `json_base_class_t` subobject along with the value since version 3.13.0.
-2. Added in version 1.0.0. Exchanges the `json_base_class_t` subobject along with the value since version 3.13.0.
+2. Since version 1.0.0. Exchanges the `json_base_class_t` subobject along with the value since version 3.13.0.
-3. Added in version 1.0.0.
+3. Since version 1.0.0.
-4. Added in version 1.0.0.
+4. Since version 1.0.0.
-5. Added in version 1.0.0.
+5. Since version 1.0.0.
-6. Added in version 3.8.0.
+6. Since version 3.8.0.
-7. Added in version 3.8.0.
+7. Since version 3.8.0.
@@ -43,8 +43,7 @@ The exact mapping and its limitations are described on a [dedicated page](../../
 `#!cpp false` by default.
 `version` (in)
-:   which version of BJData to use, see [`bjdata_version_t`](bjdata_version_t.md) and the note on "Binary values" on
+:   which version of BJData to use (see note on "Binary values" on [BJData](../../features/binary_formats/bjdata.md));
 [BJData](../../features/binary_formats/bjdata.md);
 optional, `#!cpp bjdata_version_t::draft2` by default.
 `error_handler` (in)
@@ -65,9 +64,7 @@ Strong guarantee: if an exception is thrown, there are no changes in the JSON va
 ## Exceptions
 - Throws [`other_error.502`](../../home/exceptions.md#jsonexceptionother_error502) if `use_type` is true and `use_size`
-  is false, and `j` contains a non-empty array or object, or a non-empty binary value (with
+  is false, and `j` contains a non-empty array, object, or binary value.
  `version = bjdata_version_t::draft3`, any binary value, including an empty one).
  Scalars, empty arrays, and empty objects do not throw.
 - Throws [type_error.316](../../home/exceptions.md#jsonexceptiontype_error316) if a string or object key in `j` is
  not valid UTF-8 and `error_handler` is `strict` (the default only if
  [`JSON_STRICT_BINARY_UTF8`](../macros/json_strict_binary_utf8.md) is enabled)
@@ -127,3 +124,5 @@ Linear in the size of the JSON value `j`.
  [`JSON_STRICT_BINARY_UTF8`](../macros/json_strict_binary_utf8.md) is enabled) throws `type_error.316`.
 - Throws `type_error.321` for a discarded value since version 3.13.0; previously, a discarded value nested in an
  array or object was silently skipped, producing invalid BJData.
 - Writes unsigned integers wider than 64 bits as high-precision numbers since version 3.13.0; previously, they were
  silently truncated to 64 bits.
@@ -13,7 +13,7 @@ static void to_bson(const basic_json& j, detail::output_adapter<char> o,
 ```
 BSON (Binary JSON) is a binary format in which zero or more ordered key/value pairs are stored as a single entity (a
-so-called document). The members of an object are written in the order in which iteration visits them.
+so-called document).
 1. Returns a byte vector containing the BSON serialization.
 2. Writes the BSON serialization to an output adapter.
@@ -42,8 +42,7 @@ The exact mapping and its limitations are described on a [dedicated page](../../
 ## Exception safety
-Strong guarantee: if an exception is thrown, there are no changes in the JSON value. Bytes that were already written to
+Strong guarantee: if an exception is thrown, there are no changes in the JSON value.
 the output adapter are not taken back.
 ## Exceptions
@@ -53,7 +53,7 @@ Strong guarantee: if an exception is thrown, there are no changes in the JSON va
  value, array, or object exceeds 4294967295, the maximum MessagePack can store; example:
  `"MessagePack length 4294967296 exceeds maximum of 4294967295"`
 - Throws [`out_of_range.415`](../../home/exceptions.md#jsonexceptionout_of_range415) if the subtype of a binary value
-  exceeds 255, the largest value the library can store in the one-byte MessagePack ext type; example:
+  exceeds 255, the maximum of the MessagePack ext type; example:
  `"subtype 70000 is too large for the MessagePack ext type (max 255)"`
 - Throws [type_error.316](../../home/exceptions.md#jsonexceptiontype_error316) if a string or object key in `j` is
  not valid UTF-8 and `error_handler` is `strict`
@@ -76,4 +76,4 @@ classDiagram
 ## Version history
- Added in version 3.0.0.
+- Since version 3.0.0.
@@ -36,9 +36,9 @@ The function can throw the following exceptions:
 - Throws [`parse_error.109`](../../home/exceptions.md#jsonexceptionparse_error109) if an array index in a key is not a
  number; example: `"array index 'one' is not a number"`
 - Throws [`out_of_range.404`](../../home/exceptions.md#jsonexceptionout_of_range404) if a level becomes an array
-  (because one of its keys is `0`) and another key at that level is empty (as in `/a/`), is `-`, or begins with a digit
+  (because one of its keys is `0`) and another key at that level begins with a digit but is not a valid array index
-  but is not a valid array index (such as `1a`); examples: `"unresolved reference token '-'"`,
+  (such as `1a`), or is `-`; example:
-  `"unresolved reference token ''"`
+  `"unresolved reference token '-'"`
 ## Complexity
@@ -46,7 +46,7 @@ Linear in the size of the JSON value.
 ## Notes
-Empty objects and arrays are flattened by [`flatten()`](flatten.md) to `#!json null` values and cannot be unflattened to
+Empty objects and arrays are flattened by [`flatten()`](flatten.md) to `#!json null` values and cannot unflattened to
 their original type.
 A flattened array and a flattened object whose keys are array indices are indistinguishable, because both are
@@ -54,12 +54,7 @@ described by the same JSON pointers. A value is therefore restored as an array i
 reference token `0`, and as an object otherwise: `#!json {"2": 1}` is restored unchanged, whereas `#!json {"0": 1}` is
 restored as `#!json [1]`. This decision does not depend on the order in which the flattened object is iterated.
-A third case is an object that has the key `0` next to a key that is not a valid array index: `#!json {"0": 1, "b": 2}`
+Apart from these two cases, for a JSON value `j`, the following is always true:
 is flattened to `#!json {"/0": 1, "/b": 2}`, and unflatten treats the level as an array and throws
 [`parse_error.109`](../../home/exceptions.md#jsonexceptionparse_error109) because `b` is not a number. (For the keys
 `-`, `1a`, or the empty key instead of `b`, it throws [`out_of_range.404`](../../home/exceptions.md#jsonexceptionout_of_range404).)
 Apart from these three cases, for a JSON value `j`, the following is always true:
 `#!cpp j == j.flatten().unflatten()`.
 ## Examples
@@ -45,9 +45,6 @@ This is equivalent to Python's `dict.get(key, default)`.
       return default_value;
    }
    ```
    with one exception: if the JSON value is neither an array nor an object, the function throws
    [`type_error.306`](../../home/exceptions.md#jsonexceptiontype_error306) before looking at `ptr`, even for the empty
    pointer, whereas `at` returns the value itself for the empty pointer.
 !!! note "Differences to `at` and `operator[]`"
@@ -234,8 +231,11 @@ changes to any JSON value.
 1. Added in version 1.0.0. Changed parameter `default_value` type from `const ValueType&` to `ValueType&&` in version
   3.11.0. Deleted overload for integral key types added in version 3.13.0 to reject such calls at compile time
   instead of causing undefined behavior at runtime.
-2. Added in version 3.11.0. Made `ValueType` the first template parameter in version 3.11.2. Support for keys
+2. Added in version 3.11.0. Made `ValueType` the first template parameter in version 3.11.2. Fixed in version 3.13.0
-   convertible to `std::string_view` added in version 3.13.0, consistently across the lookup functions.
+   to consistently accept `std::string_view`-convertible keys, as already supported by
-3. Added in version 2.0.2. Extended to work with arrays in version 3.13.0. Throws [`parse_error.109`](../../home/exceptions.md#jsonexceptionparse_error109)
+   [`operator[]`](operator[].md), [`at`](at.md), [`find`](find.md), and other lookup functions.
 3. Added in version 2.0.2. Extended to work with arrays in version 3.13.0, including fixing an issue where resolving
   `ptr` through an array unexpectedly threw `out_of_range` instead of returning the resolved element (or
   `default_value`, as documented). Throws [`parse_error.109`](../../home/exceptions.md#jsonexceptionparse_error109)
   instead of returning `default_value` for a one-character array index that is not a digit (e.g., `/x`) in version
   3.13.0, as it already did for longer ones.
@@ -12,7 +12,7 @@ void erase(view_type array, I idx);
 std::size_t erase(const json_pointer& ptr);
 ```
-Only an **editable** document (`#!cpp view_mode::editable`, e.g. [`json_editable_document`](../json_editable_document.md))
+Only an **editable** document (`#!cpp Editable == true`, e.g. [`json_editable_document`](../json_editable_document.md))
 has `erase`; calling it on a read-only `basic_json_document` fails to compile (`#!cpp static_assert`).
 1. Removes every member of `object` whose key is `key` (see [Notes](#notes) on duplicate keys) and returns how many
@@ -3,14 +3,14 @@
 <small>Defined in header `<nlohmann/json_view.hpp>`</small>
 ```cpp
-template<typename BasicJsonType, view_mode Mode = view_mode::read_only>
+template<typename BasicJsonType, bool Editable = false>
 class basic_json_document;
 ```
 A parsed JSON text, held as a flat index of its values
 ([16 bytes per value](../../home/architecture.md#node-index-of-json-views)) instead of a tree of `BasicJsonType` values.
-Strings and floating-point numbers stay in the source text; integers are converted while parsing, and strings that
+Strings and numbers stay in the source text; only strings that contain escapes are decoded, into one buffer owned by
-contain escapes are decoded into one buffer owned by the document. [`basic_json_view`](../basic_json_view/index.md) is a read-only handle to one value of a
+the document. [`basic_json_view`](../basic_json_view/index.md) is a read-only handle to one value of a
 `basic_json_document`; [`materialize()`](../basic_json_view/materialize.md) turns a subtree into the
 `BasicJsonType` value that [`BasicJsonType::parse()`](../basic_json/parse.md) would have produced for it.
@@ -20,9 +20,9 @@ is move-only: a copy would duplicate the whole index, the decoded-string buffer,
 enough in every use we know of. The index, the decoded strings, and the owned text live in one heap block that the
 document holds through a `#!cpp std::unique_ptr`; this is also why views survive a move of the document.
-With `#!cpp Mode == view_mode::editable`, the document also offers [`set`](set.md), [`push_back`](push_back.md),
+With `#!cpp Editable == true`, the document also offers [`set`](set.md), [`push_back`](push_back.md),
 [`insert`](insert.md), and [`erase`](erase.md) to change values in place, see [Edits](#edits) below. The source text
-itself is never written; a read-only document (`#!cpp view_mode::read_only`, the default) does not carry any of the
+itself is never written; a read-only document (`#!cpp Editable == false`, the default) does not carry any of the
 bookkeeping edits need, and calling any of them on one fails to compile (`#!cpp static_assert`).
 ## Template parameters
@@ -32,10 +32,9 @@ bookkeeping edits need, and calling any of them on one fails to compile (`#!cpp
    [`ordered_json`](../ordered_json.md). Only 64-bit `number_integer_t`/`number_unsigned_t` types are supported; this
    is checked with a `static_assert`.
-`Mode`
+`Editable`
-:   a [`view_mode`](../view_mode.md): `#!cpp view_mode::editable` if the document supports [`set`](set.md),
+:   whether the document supports [`set`](set.md), [`push_back`](push_back.md), [`insert`](insert.md), and
-    [`push_back`](push_back.md), [`insert`](insert.md), and [`erase`](erase.md) (optional, `#!cpp view_mode::read_only`
+    [`erase`](erase.md) (optional, `#!cpp false` by default). See [Edits](#edits) below.
    by default). See [Edits](#edits) below.
 ## Specializations
@@ -48,7 +47,7 @@ bookkeeping edits need, and calling any of them on one fails to compile (`#!cpp
 ## Member types
- **view_type** - the type of view returned by [`root()`](root.md) (`#!cpp basic_json_view<BasicJsonType, Mode>`)
+- **view_type** - the type of view returned by [`root()`](root.md) (`#!cpp basic_json_view<BasicJsonType, Editable>`)
 - **value_t** - the JSON type enumeration, see [`basic_json::value_t`](../basic_json/value_t.md)
 - **image_check** - how [`load()`](load.md) validates an image (`full`, `bounds`, `none`), see [`image_check`](load.md#image_check)
@@ -81,15 +80,15 @@ bookkeeping edits need, and calling any of them on one fails to compile (`#!cpp
 ### Edits
 - [**set**](set.md) - replace a value, or set an object member, an array element, or the value a JSON pointer refers
-  to (editable documents only)
+  to (`#!cpp Editable` documents only)
- [**push_back**](push_back.md) - append to an array (editable documents only)
+- [**push_back**](push_back.md) - append to an array (`#!cpp Editable` documents only)
- [**insert**](insert.md) - insert an element into an array before a given position (editable documents only)
+- [**insert**](insert.md) - insert an element into an array before a given position (`#!cpp Editable` documents only)
 - [**erase**](erase.md) - remove an object member, an array element, or the value a JSON pointer refers to
-  (editable documents only)
+  (`#!cpp Editable` documents only)
 ## Edits
-An editable document (`#!cpp view_mode::editable`) can be changed after parsing, with [`set`](set.md),
+An editable document (`#!cpp Editable == true`) can be changed after parsing, with [`set`](set.md),
 [`push_back`](push_back.md), [`insert`](insert.md), and [`erase`](erase.md);
 [`json_editable_document`](../json_editable_document.md) and
 [`ordered_json_editable_document`](../ordered_json_editable_document.md) are the corresponding specializations. A few
@@ -116,13 +115,6 @@ points apply to every edit:
  [`source_offset()`](../basic_json_view/source_offset.md) of a value introduced by an edit is
  `#!cpp static_cast<std::size_t>(-1)`, the same value it reports for a decoded string.
 ## See also
 - [Zero-copy JSON views](../../features/json_view.md) - guide to documents and views
 - [**basic_json_view**](../basic_json_view/index.md) - the non-owning handle to a value in a document
 - [**json_document**](../json_document.md) and [**json_editable_document**](../json_editable_document.md) - the default specializations
 - [**materialize**](../basic_json_view/materialize.md) - build a `basic_json` value from a view
 ## Version history
 - Added in version 3.13.0.
@@ -5,7 +5,7 @@ template<typename I, typename V>
 view_type insert(view_type array, I idx, V&& value);
 ```
-Only an **editable** document (`#!cpp view_mode::editable`, e.g. [`json_editable_document`](../json_editable_document.md))
+Only an **editable** document (`#!cpp Editable == true`, e.g. [`json_editable_document`](../json_editable_document.md))
 has `insert`; calling it on a read-only `basic_json_document` fails to compile (`#!cpp static_assert`).
 Inserts `value` into `array` as a new element before position `idx`, which must not be past the end
@@ -55,7 +55,10 @@ validate with overload 2 first, if the original vector must survive a failed loa
 ## Exceptions
-Throws [`parse_error.116`](../../home/exceptions.md#jsonexceptionparse_error116) if `image` is not one
+On a big-endian target, throws [`type_error.320`](../../home/exceptions.md#jsonexceptiontype_error320) -- the same
 exception [`save()`](save.md#exceptions) throws there, since the image format is little-endian only.
 Otherwise throws [`parse_error.116`](../../home/exceptions.md#jsonexceptionparse_error116) if `image` is not one
 `save()` could have written, or fails the requested `check`:
 | message               | when                                                                                                |
@@ -92,9 +95,6 @@ are checked once, however many nodes refer to it.
 ## Notes
 **Little-endian targets only.** On a big-endian target, `load()` does not exist, just like
 [`save()`](save.md#notes): the image format is little-endian, so a call fails to compile.
 ### `image_check` { #image_check }
 ```cpp
@@ -21,19 +21,17 @@ static basic_json_document parse(IteratorType first, IteratorType last,
 Both overloads accept the same JSON text as [`BasicJsonType::parse()`](../basic_json/parse.md), with the same
 `ignore_comments`/`ignore_trailing_commas` options, but build a [`basic_json_document`](index.md) (a flat index into
-the input) instead of a tree of `BasicJsonType` values. They accept every input `BasicJsonType::parse()` takes, and in
+the input) instead of a tree of `BasicJsonType` values. They take the same inputs as `BasicJsonType::parse()`. Byte
-addition a pointer to a null-terminated wide string (which `BasicJsonType::parse()` rejects). Contiguous inputs of
+inputs that stay alive can be borrowed; all others (streams, `#!cpp FILE*`, wide characters, non-contiguous
-single-byte characters that stay alive can be borrowed; all others (streams, `#!cpp FILE*`, wide characters, which
+iterators) are read into a copy that the document owns -- see the Notes. Use [`parse_copy()`](parse_copy.md) to get an
-must be converted to UTF-8, and non-contiguous iterators) are read into a copy that the document owns -- see the
+owned copy of a borrowable input as well.
 Notes. Use [`parse_copy()`](parse_copy.md) to get an owned copy of a borrowable input
 as well.
 ## Template parameters
 `InputType`
 :   A compatible input, for instance:
-    - a `#!cpp std::string`, a `#!cpp std::string_view` (C++17), or a C-style array of single-byte characters
+    - a `#!cpp std::string`, `#!cpp std::string_view`, or a C-style array of single-byte characters
    - a pointer to a null-terminated string of single-byte characters (`#!cpp char`, `#!cpp signed char`,
      `#!cpp unsigned char`, `#!cpp std::uint8_t`)
    - a container for which `#!cpp obj.data()` and `#!cpp obj.size()` give contiguous single-byte access, e.g.
@@ -49,10 +47,6 @@ as well.
    `#!cpp std::string::iterator`; the iterators of single-byte characters are borrowed or read like the byte inputs
    above, those of wide characters are converted to UTF-8
 Ill-formed UTF-16 and UTF-32 sequences are rejected: a lone surrogate, a high surrogate that is not followed by its low
 surrogate, and a code point above `U+10FFFF` all yield a
 [`parse_error.101`](../../home/exceptions.md#jsonexceptionparse_error101).
 ## Parameters
 `input` (in)
@@ -161,5 +155,3 @@ buffer of a given length, pass a pair of pointers: `#!cpp parse(ptr, ptr + len)`
 ## Version history
 - Added in version 3.13.0.
 - Ill-formed UTF-16 and UTF-32 input (a lone surrogate, a high surrogate that is not followed by its low surrogate, or
  a code point above `U+10FFFF`) is rejected with `parse_error.101`.
@@ -13,7 +13,7 @@ editable, and it does not have to be `array`'s own document -- which is copied s
 source document afterward; a `BasicJsonType` value; or anything `BasicJsonType` can be constructed from (numbers,
 strings, `#!cpp bool`, `#!cpp nullptr`, containers, ...).
-Only an **editable** document (`#!cpp view_mode::editable`, e.g. [`json_editable_document`](../json_editable_document.md))
+Only an **editable** document (`#!cpp Editable == true`, e.g. [`json_editable_document`](../json_editable_document.md))
 has `push_back`; calling it on a read-only `basic_json_document` fails to compile (`#!cpp static_assert`).
 ## Template parameters
@@ -12,7 +12,7 @@ An edited document is written in its *current* state, with its values in documen
 parser would have produced them for that JSON text: a member [`set`](set.md) added goes at the end, an
 [`erase`](erase.md)d member leaves no trace, and a float that is not finite (NaN or positive/negative infinity)
 becomes null, the same substitution [`dump()`](../basic_json_view/dump.md) makes. The same document always saves to
-the same bytes -- also across `BasicJsonType` and the [`view_mode`](../view_mode.md), since the image reflects document order and
+the same bytes -- also across `BasicJsonType` and `#!cpp Editable`, since the image reflects document order and
 values only, not which specialization produced them.
 ## Return value
@@ -31,6 +31,9 @@ Throws [`type_error.320`](../../home/exceptions.md#jsonexceptiontype_error320) i
 [discarded](is_discarded.md) -- a default-constructed document, or one a failed [`parse()`](parse.md)/
 [`read()`](read.md) with `allow_exceptions == false` left discarded.
 On a big-endian target, throws `type_error.320` with a different message instead: the image format is little-endian
 only (see [Notes](#notes)).
 Throws [`out_of_range.416`](../../home/exceptions.md#jsonexceptionout_of_range416) if the node count, the text, or
 the decoded strings of the image would individually reach 4 GiB -- the same 32-bit offsets
 [`parse()`](parse.md#exceptions) and, for edits, [`set`](set.md)/[`push_back`](push_back.md) are already limited to.
@@ -41,6 +44,9 @@ the decoded strings of the image would individually reach 4 GiB -- the same 32-b
    [json.exception.type_error.320] cannot save a discarded json_document
    ```
    ```
    [json.exception.type_error.320] json_document images need a little-endian target
    ```
    ```
    [json.exception.out_of_range.416] images of 4 GiB or more are not supported by json_document
    ```
@@ -64,9 +70,9 @@ else -- see [`load`'s Exceptions](load.md#exceptions).
    the *same* build on the *same* (little-endian) machine -- not as a long-term storage format. Keep the original
    JSON text if you need to read a saved document back with a future library version.
-**Little-endian targets only.** The image is written as raw little-endian bytes, with no byte-swapping. On a
+**Little-endian only.** The image is written as raw little-endian bytes, with no byte-swapping. `save()` (and
-big-endian target, `save()` and [`load`](load.md) do not exist: a call fails to compile rather than produce bytes a
+[`load`](load.md)) throw `type_error.320` on a big-endian target rather than silently produce bytes a big-endian
-big-endian reader could not interpret correctly.
+reader could not interpret correctly.
 ## Examples
@@ -18,7 +18,7 @@ template<typename V>
 view_type set(const json_pointer& ptr, V&& value);
 ```
-Only an **editable** document (`#!cpp view_mode::editable`, e.g. [`json_editable_document`](../json_editable_document.md))
+Only an **editable** document (`#!cpp Editable == true`, e.g. [`json_editable_document`](../json_editable_document.md))
 has `set`; calling it on a read-only `basic_json_document` fails to compile (`#!cpp static_assert`).
 1. Replaces the value `target` refers to with `value`.
@@ -80,8 +80,7 @@ None of these exceptions carry a [`JSON_DIAGNOSTICS`](../macros/json_diagnostics
   Objects with 128 or more members get a hash index of their keys while parsing, so that a lookup in them takes
   constant time on average.
 2. Linear in `idx`: elements are skipped one at a time from the first one, since they are not a fixed size in the
-   index (unlike `BasicJsonType`'s array, which is random-access). Constant if no element of the array is an array
+   index (unlike `BasicJsonType`'s array, which is random-access).
   or object, since the elements are then adjacent in the index.
 3. Linear in the number of reference tokens of `ptr` and, for each token, in the number of members of the object at
   that level (as 1.) or the index into the array (as 2.).
@@ -28,8 +28,7 @@ This exception does not carry a [`JSON_DIAGNOSTICS`](../macros/json_diagnostics.
 Linear in the size of the array or object: unlike [`front()`](front.md), which only ever looks at the first
 element, `back()` has to walk every element to find where they end, since elements are not a fixed size in the
-index. Constant if no element of the array is an array or object, since the elements are then adjacent
+index.
 in the index.
 ## Notes
@@ -1,32 +1,20 @@
 # <small>nlohmann::basic_json_view::</small>basic_json_view
 ```cpp
 // (1)
 basic_json_view() noexcept = default;
 // (2) only for Mode == view_mode::editable
 basic_json_view(const basic_json_view<BasicJsonType, view_mode::read_only>& other) noexcept;
 ```
-1. Creates an invalid (discarded) view: [`type()`](type.md) is `#!cpp value_t::discarded` and
+Creates an invalid (discarded) view: [`type()`](type.md) is `#!cpp value_t::discarded` and
-   [`is_discarded()`](is_discarded.md) is `#!cpp true`.
+[`is_discarded()`](is_discarded.md) is `#!cpp true`.
 2. Converts a view of a read-only document into a view of an editable document (implicitly), so that a function
   taking a [`json_editable_view`](../json_editable_view.md) accepts both. The result is a view of the same value of
   the same read-only document. See [`view_mode`](../view_mode.md) for why there is no conversion the other way.
-## Parameters
+This is the only constructor a caller can use directly. Every other view is obtained from a
 `other` (in)
 :   a view of a read-only document with the same `BasicJsonType`
 Apart from these, a view is obtained from a
 [`basic_json_document`](../basic_json_document/index.md), via [`root()`](../basic_json_document/root.md) or by
 navigating into a container with [`operator[]`](operator[].md), [`at`](at.md), [`front`](front.md), [`back`](back.md),
 [`find`](find.md), or iteration.
 ## Exception safety
-No-throw guarantee: these constructors never throw exceptions.
+No-throw guarantee: this constructor never throws exceptions.
 ## Complexity
@@ -57,7 +45,6 @@ placeholder for "no value yet" and later be assigned a real view.
 - [is_discarded](is_discarded.md) - return whether the view is invalid
 - [root](../basic_json_document/root.md) - the view of a document's root value
 - [view_mode](../view_mode.md) - whether a document and its views can be edited
 ## Version history
@@ -19,36 +19,16 @@ For the types below, the conversion works directly on the flat index -- no `Basi
  document's own buffer of decoded strings (see [`get_string()`](get_string.md))
 - `BasicJsonType` -- equivalent to [`materialize()`](materialize.md)
 - `basic_json_view` -- returns `#!cpp *this`
- `#!cpp std::vector<U, A>` of the types above -- from an array, element by element, each converted with
+- `#!cpp std::vector<U, A>` -- from an array, element by element, each converted with `#!cpp get<U>()`; `#!cpp
-  `#!cpp get<U>()`; `#!cpp std::vector<basic_json_view>` keeps a view of every element instead of a value
+  std::vector<basic_json_view>` keeps a view of every element instead of a value
- `#!cpp std::map<K, basic_json_view, C, A>` and `#!cpp std::unordered_map<K, basic_json_view, H, E, A>`, if `K` is
+- `#!cpp std::map<K, V, C, A>` and `#!cpp std::unordered_map<K, V, H, E, A>`, if `K` is constructible from a `#!cpp
-  constructible from a `#!cpp (const char*, std::size_t)` pair -- views of the members of an object; with a repeated
+  (const char*, std::size_t)` pair -- from an object, member by member, each value converted with `#!cpp get<V>()`; with a repeated
-  key, the view of the *last* member is kept, as [`BasicJsonType::parse()`](../basic_json/parse.md) keeps its value
+  key, the *last* value is kept, as [`BasicJsonType::parse()`](../basic_json/parse.md) (and
  [`materialize()`](materialize.md)) does; `#!cpp std::map<std::string, basic_json_view>` keeps views of the members
  instead of values
-A default-constructible `T` whose `from_json()` accepts views reads the view directly as well, without building a
+Every other `T` -- `#!cpp std::list`, `#!cpp std::pair`, `#!cpp std::array`, enumerations, user types with a
-`BasicJsonType` value. This covers the library's own conversions of the standard library types -- all other
+`from_json()`, ... -- is converted by `#!cpp materialize().get<T>()`: the subtree is built into a real `BasicJsonType`
 `#!cpp std::vector`s, `#!cpp std::map`/`#!cpp std::unordered_map` (also with other key types), `#!cpp std::list`,
 `#!cpp std::deque`, `#!cpp std::set`, `#!cpp std::forward_list`, `#!cpp std::valarray`, `#!cpp std::array`, C arrays,
 `#!cpp std::pair`, `#!cpp std::tuple`, `#!cpp std::optional`, enumerations, `#!cpp std::filesystem::path`, ... --
 which give the same values as `#!cpp materialize().get<T>()` (from an object, a repeated key keeps the *last* value,
 as [`BasicJsonType::parse()`](../basic_json/parse.md) does), as well as the types of the
 [`NLOHMANN_DEFINE_TYPE_*`](../macros/nlohmann_define_type_intrusive.md) and
 [`NLOHMANN_DEFINE_DERIVED_TYPE_*`](../macros/nlohmann_define_derived_type.md) macros and the enumerations of
 [`NLOHMANN_JSON_SERIALIZE_ENUM`](../macros/nlohmann_json_serialize_enum.md), and any `from_json()` constrained to
 accept views, e.g. with [`is_json_view`](../is_json_view.md). A `from_json()` that also accepts types that are no JSON
 values at all, such as the unconstrained `#!cpp template<typename BasicJsonType> void from_json(const BasicJsonType&,
 T&)` of [arbitrary type conversions](../../features/arbitrary_types.md), is not called with a view: it may use
 `BasicJsonType` functions a view does not have. See [Writing generic code](../../features/json_view.md#writing-generic-code).
 !!! warning "Duplicate keys"
    Such a `from_json()` looks members up in the view, where a repeated key finds the **first** member, while
    `#!cpp materialize().get<T>()` sees the **last** one, as [`BasicJsonType::parse()`](../basic_json/parse.md)
    keeps it: for `#!cpp {"x":1,"x":2}`, `#!cpp get<point>()` reads `#!cpp x == 1`. See
    [Duplicate keys](../../features/json_view.md#duplicate-keys).
 Every other `T` -- user types whose `from_json()` is written for `BasicJsonType` only, types without a default
 constructor, `#!cpp std::tuple`s holding references, ... -- is converted by `#!cpp materialize().get<T>()`: the subtree is built into a real `BasicJsonType`
 value first (as [`BasicJsonType::parse()`](../basic_json/parse.md) would), and converted from there exactly as
 [`BasicJsonType::get<T>()`](../basic_json/get.md) would convert it.
@@ -73,15 +53,12 @@ Strong guarantee: there are no changes to the view or the document it refers to.
  throws for the same JSON type and `T`.
 - For `#!cpp std::vector<U, A>`: throws `type_error.302` if the value is not an array; otherwise, whatever converting
  an element to `U` throws.
- For `#!cpp std::map`/`#!cpp std::unordered_map` of views: throws `type_error.302` if the value is not an object.
+- For `#!cpp std::map`/`#!cpp std::unordered_map`: throws `type_error.302` if the value is not an object; otherwise,
- For a `T` whose `from_json()` reads the view: whatever that `from_json()` throws; for the library's conversions and
+  whatever converting a member to the mapped type throws.
  the macros, the same exceptions with the same messages as [`BasicJsonType::get<T>()`](../basic_json/get.md) of the
  same value.
 - For every other `T`: whatever [`materialize().get<T>()`](../basic_json/get.md) throws -- typically `type_error.302`,
  or whatever a user-provided `from_json()` throws.
-None of the exceptions thrown directly by this function or by a `from_json()` that reads the view (the first four
+None of the exceptions thrown directly by this function (the first three bullets above) carry a
 bullets above) carry a
 [`JSON_DIAGNOSTICS`](../macros/json_diagnostics.md) path: the view has no `BasicJsonType` value to point at. An
 exception thrown while converting through `materialize()` (the last bullet) is different: it is thrown by a real
 `BasicJsonType` value, so it **does** carry a `JSON_DIAGNOSTICS` path if `BasicJsonType` was built with it enabled.
@@ -99,8 +76,6 @@ document.
 - `#!cpp std::map`/`#!cpp std::unordered_map`: linear in the number of members for walking them, plus the container's
  own insertion cost per member (logarithmic for `#!cpp std::map`, amortized constant for `#!cpp
  std::unordered_map`), times the complexity of converting one member to the mapped type.
 - a `T` whose `from_json()` reads the view: the cost of that `from_json()`; for the macros, linear in the number of
  members times the cost of a lookup, plus the cost of converting the members.
 - every other `T`: the cost of [`materialize()`](materialize.md) and of destroying the `BasicJsonType` value
  afterwards, plus that of [`BasicJsonType::get<T>()`](../basic_json/get.md).
@@ -5,13 +5,12 @@ template<typename T>
 T& get_to(T& v) const;
 ```
-Converts the value to `T` and stores it in `v`, in one of three ways:
+Converts the value to `T` and stores it in `v`, in one of two ways:
 - For the types that [`get<T>()`](get.md) converts directly -- arithmetic types, `#!cpp bool`,
  `#!cpp std::nullptr_t`, [`string_view_t`](index.md#member-types), `#!cpp std::basic_string`, `BasicJsonType`,
-  `basic_json_view`, vectors of these, and maps of views -- `v` is assigned: `#!cpp v = get<T>()`.
+  `basic_json_view`, `#!cpp std::vector`, and `#!cpp std::map`/`#!cpp std::unordered_map` with string keys -- `v` is
- For a type whose `from_json()` accepts views (see [`get<T>()`](get.md)), that `from_json()` is called with the
+  assigned: `#!cpp v = get<T>()`.
  view and the existing `v`, without building a `BasicJsonType` value.
 - For every other type, the subtree is built into a `BasicJsonType` value and `#!cpp materialize().get_to(v)` is
  called, i.e. `from_json()` is invoked with the existing `v`, exactly as
  [`BasicJsonType::get_to()`](../basic_json/get_to.md) does.
@@ -3,7 +3,7 @@
 <small>Defined in header `<nlohmann/json_view.hpp>`</small>
 ```cpp
-template<typename BasicJsonType, view_mode Mode = view_mode::read_only>
+template<typename BasicJsonType, bool Editable = false>
 class basic_json_view;
 ```
@@ -37,7 +37,7 @@ Moving the document itself does not invalidate its views: the index is heap-allo
 `#!cpp operator ValueType()`), and no `#!cpp get_ptr()` or `#!cpp get_ref()`; see [`get`](get.md).
 `basic_json_view` itself is always read-only -- it never has a `set` or `push_back` of its own. A view of an
-**editable** document (`#!cpp view_mode::editable`) sees every edit made through
+**editable** document (`#!cpp Editable == true`) sees every edit made through
 [`basic_json_document::set`](../basic_json_document/set.md) and
 [`basic_json_document::push_back`](../basic_json_document/push_back.md): once a value is changed, every view that
 still refers to it -- including ones taken before the change -- reads the new value. See
@@ -49,10 +49,9 @@ still refers to it -- including ones taken before the change -- reads the new va
 :   a specialization of [`basic_json`](../basic_json/index.md), matching the
    [`basic_json_document`](../basic_json_document/index.md) the view was taken from.
-`Mode`
+`Editable`
-:   a [`view_mode`](../view_mode.md): whether the view is of an editable document, matching the
+:   whether the view is of an editable document, matching the [`basic_json_document`](../basic_json_document/index.md)
-    [`basic_json_document`](../basic_json_document/index.md) it was taken from (optional, `#!cpp view_mode::read_only` by
+    it was taken from (optional, `#!cpp false` by default). See [Edits](../basic_json_document/index.md#edits).
    default). See [Edits](../basic_json_document/index.md#edits).
 ## Specializations
@@ -64,7 +63,6 @@ still refers to it -- including ones taken before the change -- reads the new va
 ## Member types
 - **basic_json_type** - `BasicJsonType` (it also marks the class for [`is_json_view`](../is_json_view.md))
 - **value_t** - the JSON type enumeration, see [`basic_json::value_t`](../basic_json/value_t.md)
 - **string_t**, **number_integer_t**, **number_unsigned_t**, **number_float_t**, **json_pointer** - the corresponding
  member types of `BasicJsonType`
@@ -145,13 +143,6 @@ still refers to it -- including ones taken before the change -- reads the new va
 - [**source_offset**](source_offset.md) - byte offset of this value in the document's source text
 ## See also
 - [Zero-copy JSON views](../../features/json_view.md) - guide to documents and views
 - [**basic_json_document**](../basic_json_document/index.md) - the document that owns the parsed data
 - [**json_view**](../json_view.md) and [**json_editable_view**](../json_editable_view.md) - the default specializations
 - [**materialize**](materialize.md) - build a `basic_json` value from a view
 ## Version history
 - Added in version 3.13.0.
@@ -86,8 +86,7 @@ None of these exceptions carry a [`JSON_DIAGNOSTICS`](../macros/json_diagnostics
   Objects with 128 or more members get a hash index of their keys while parsing, so that a lookup in them takes
   constant time on average.
 2. Linear in `idx`: elements are skipped one at a time from the first one, since they are not a fixed size in the
-   index (unlike `BasicJsonType`'s array, which is random-access). Constant if no element of the array is an array
+   index (unlike `BasicJsonType`'s array, which is random-access).
   or object, since the elements are then adjacent in the index.
 3. Linear in the number of reference tokens of `ptr` and, for each token, in the number of members of the object at
   that level (as 1.) or the index into the array (as 2.).
@@ -51,4 +51,4 @@ byte_container_with_subtype(container_type&& container, subtype_type subtype);
 ## Version history
-Added in version 3.8.0.
+Since version 3.8.0.
@@ -39,4 +39,4 @@ Constant.
 ## Version history
-Added in version 3.8.0.
+Since version 3.8.0.
@@ -0,0 +1,32 @@
 # <small>nlohmann::byte_container_with_subtype::</small>container_type
 ```cpp
 using container_type = BinaryType;
 ```
 The type of the underlying binary container, forwarded from the `BinaryType` template parameter that
 `byte_container_with_subtype` is instantiated with. `byte_container_with_subtype` publicly inherits from
 `container_type`.
 See [`basic_json::binary_t`](../basic_json/binary_t.md) for the type typically used to instantiate
 `BinaryType`.
 ## Examples
 ??? example
    The example shows the type `container_type`.
    ```cpp
    --8<-- "examples/byte_container_with_subtype__container_type.cpp"
    ```
    Output:
    ```
    --8<-- "examples/byte_container_with_subtype__container_type.output"
    ```
 ## Version history
 - Since version 3.8.0.
@@ -42,4 +42,4 @@ Constant.
 ## Version history
-Added in version 3.8.0.
+Since version 3.8.0.
@@ -6,7 +6,7 @@ class byte_container_with_subtype : public BinaryType;
 ```
 This type extends the template parameter `BinaryType` provided to [`basic_json`](../basic_json/index.md) with a subtype
-used by BSON, CBOR, and MessagePack. This type exists so that the user does not have to specify a type themselves with a
+used by BSON and MessagePack. This type exists so that the user does not have to specify a type themselves with a
 specific naming scheme in order to override the binary type.
 ## Template parameters
@@ -29,14 +29,6 @@ specific naming scheme in order to override the binary type.
 - [**has_subtype**](has_subtype.md) - return whether the value has a subtype
 - [**clear_subtype**](clear_subtype.md) - clears the binary subtype
 ## See also
 - [Binary values](../../features/binary_values.md) - how binary values and subtypes are handled
 - [**binary**](../basic_json/binary.md) - create a binary array value
 - [**get_binary**](../basic_json/get_binary.md) - get a reference to the stored binary value
 - [**binary_t**](../basic_json/binary_t.md) - type for binary arrays
 - [Binary formats](../../features/binary_formats/index.md) - formats that can store binary values
 ## Version history
 - Added in version 3.8.0.
@@ -44,4 +44,4 @@ Constant.
 ## Version history
-Added in version 3.8.0.
+Since version 3.8.0.
@@ -0,0 +1,28 @@
 # <small>nlohmann::byte_container_with_subtype::</small>subtype_type
 ```cpp
 using subtype_type = std::uint64_t;
 ```
 The type used to store the optional binary subtype tag. See [`subtype`](subtype.md) and
 [`set_subtype`](set_subtype.md).
 ## Examples
 ??? example
    The example shows the type `subtype_type`.
    ```cpp
    --8<-- "examples/byte_container_with_subtype__subtype_type.cpp"
    ```
    Output:
    ```
    --8<-- "examples/byte_container_with_subtype__subtype_type.output"
    ```
 ## Version history
 - Since version 3.8.0.
@@ -1,56 +0,0 @@
 # <small>nlohmann::</small>is_json_view
 <small>Defined in header `<nlohmann/json_view.hpp>`</small>
 ```cpp
 template<typename T>
 struct is_json_view;
 ```
 A type trait: `#!cpp is_json_view<T>::value` is `#!cpp true` if `T` is a [`basic_json_view`](basic_json_view/index.md)
 of any `BasicJsonType` and any [`view_mode`](view_mode.md) -- [`json_view`](json_view.md),
 [`json_editable_view`](json_editable_view.md), [`ordered_json_view`](ordered_json_view.md), ... -- and
 `#!cpp false` otherwise, for [`basic_json`](basic_json/index.md) as well.
 It is meant for constraining templates that accept views, in particular a `from_json()` that should read views
 directly: [`get<T>()`](basic_json_view/get.md) on a view calls a `from_json()` with the view only if that `from_json()`
 accepts views but not arbitrary types.
 ## Template parameters
 `T`
 :   the type to check (without cv-qualifiers or references)
 ## Notes
 A view is recognized by its member type `basic_json_type` (a [`basic_json`](basic_json/index.md) specialization) and
 its [`materialize()`](basic_json_view/materialize.md) returning that type, so the trait needs no declaration of the
 view class.
 ## Examples
 ??? example
    The example below shows the trait, and a `from_json()` constrained to `json` values and views: `get<T>()` on a view
    reads the view directly.
    ```cpp
    --8<-- "examples/is_json_view.cpp"
    ```
    Output:
    ```
    --8<-- "examples/is_json_view.output"
    ```
 ## See also
 - [basic_json_view](basic_json_view/index.md) - a handle to one value of a document
 - [get](basic_json_view/get.md) - which conversions read the view directly
 - [view_mode](view_mode.md) - read-only or editable
 - [Writing generic code](../features/json_view.md#writing-generic-code) - functions and `from_json()` for views
 ## Version history
 Added in version 3.13.0.
@@ -30,4 +30,4 @@ types.
 ## Version history
-Added in version 1.0.0.
+Since version 1.0.0.
@@ -3,7 +3,7 @@
 <small>Defined in header `<nlohmann/json_view.hpp>`</small>
 ```cpp
-using json_document = basic_json_document<json, view_mode::read_only>;
+using json_document = basic_json_document<json>;
 ```
 This type is a [`basic_json_document`](basic_json_document/index.md) of the default [`json`](json.md)
@@ -32,4 +32,4 @@ specialization.
 ## Version history
-Added in version 3.13.0.
+Since version 3.13.0.
@@ -3,7 +3,7 @@
 <small>Defined in header `<nlohmann/json_view.hpp>`</small>
 ```cpp
-using json_editable_document = basic_json_document<json, view_mode::editable>;
+using json_editable_document = basic_json_document<json, true>;
 ```
 This type is an **editable** [`basic_json_document`](basic_json_document/index.md) of the default
@@ -40,4 +40,4 @@ parsing, without ever rewriting the source text -- see [Edits](basic_json_docume
 ## Version history
-Added in version 3.13.0.
+Since version 3.13.0.
@@ -3,7 +3,7 @@
 <small>Defined in header `<nlohmann/json_view.hpp>`</small>
 ```cpp
-using json_editable_view = basic_json_view<json, view_mode::editable>;
+using json_editable_view = basic_json_view<json, true>;
 ```
 This type is a [`basic_json_view`](basic_json_view/index.md) of a value of a
@@ -38,4 +38,4 @@ still referring to it seeing the change, see [Edits](basic_json_document/index.m
 ## Version history
-Added in version 3.13.0.
+Since version 3.13.0.
@@ -51,5 +51,5 @@ operator string_t() const
 ## Version history
- Added in version 2.0.0.
+- Since version 2.0.0.
 - Changed type to `string_t` and deprecated in version 3.11.0.
@@ -12,8 +12,7 @@ Parent of this JSON pointer; in case this JSON pointer is the root, the root its
 ## Exception safety
-Strong exception safety: if an exception occurs, the original value stays intact. The function is not `#!cpp noexcept`
+No-throw guarantee: this function never throws exceptions.
 and allocates a new JSON pointer, so it can throw `#!cpp std::bad_alloc`; it throws no library exceptions.
 ## Complexity
@@ -49,5 +49,5 @@ ptr == json_pointer(ptr.to_string());
 ## Version history
- Added in version 2.0.0.
+- Since version 2.0.0.
 - Changed return type to `string_t` in version 3.11.0.
Author	SHA1	Message	Date
Niels Lohmann	9222763ab9	Merge branch 'develop' into claude/todo-191-plan-508110 Signed-off-by: Niels Lohmann <mail@nlohmann.me>	2026-10-21 10:51:41 +02:00
Niels Lohmann	d13c9e7212	Fix links to moved API pages in the API changes page mkdocs --strict rejects links to pages that only exist as redirects. Also link operator<< to operator_ltlt.md and operator>> to operator_gtgt.md instead of the other way round. Signed-off-by: Niels Lohmann <mail@nlohmann.me>	2026-10-10 07:42:37 +02:00
Niels Lohmann	522e7465b0	Merge branch 'develop' into claude/todo-191-plan-508110 Regenerate tools/api_checker/api_surface.json with the CI libclang (18.1.1 on Linux) and point the new ordered_map links in features/performance.md to api/ordered_map/index.md. Signed-off-by: Niels Lohmann <mail@nlohmann.me>	2026-10-10 04:01:42 +02:00
Niels Lohmann	fe4e78e867	Merge branch 'develop' into claude/todo-191-plan-508110 - ordered_map.hpp: develop's refactored members, with this branch's @sa links on every public member - byte_container_with_subtype operator==/!= and ordered_map docs: develop's reviewed text (#5638); drop the now unreferenced examples - basic_json.md: keep both version-history additions - add the docset entries that develop's style check now requires for the 25 API pages this branch adds - regenerate tools/api_checker/api_surface.json for develop's API Signed-off-by: Niels Lohmann <mail@nlohmann.me>	2026-10-04 17:35:55 +02:00
Niels Lohmann	9196e92520	Merge branch 'develop' into claude/todo-191-plan-508110 Conflicts: none textual. Follow-up fixes for develop's changes: - docs/mkdocs/docs/api/ordered_map/index.md: develop's new paragraph (#5609) was written for api/ordered_map.md; fixed its relative ordered_json.md link for the page's new location, plus two pre-existing links from an earlier merge (ordered_json.md, features/object_order.md) - tools/api_checker/api_surface.json: regenerated with libclang 18.1.1 on Linux (swap() noexcept now includes json_base_class_t; new integral-key contains/count/find/value overloads) Signed-off-by: Niels Lohmann <mail@nlohmann.me>	2026-09-30 20:36:12 +02:00
Niels Lohmann	7d22d865dd	Merge branch 'develop' into claude/todo-191-plan-508110 Signed-off-by: Niels Lohmann <mail@nlohmann.me>	2026-09-28 22:22:46 +02:00
Niels Lohmann	4c73319d3b	Use one-line module docstrings in the API checker scripts Codacy runs two docstring checkers with opposite rules for module docstrings: with the summary on the first line it reported D213, with the summary on the second line it reports D212. A one-line docstring satisfies both. Keep the summary as the docstring and move the details into a comment below it; nothing reads the module docstrings. Signed-off-by: Niels Lohmann <mail@nlohmann.me>	2026-09-28 18:42:34 +02:00
Niels Lohmann	da5097abcd	Restore the CI spelling of json_pointer's operator string_t in the API surface The develop merge regenerated api_surface.json on macOS, whose libclang spells the name of the deprecated conversion operator as "operator nlohmann::json_pointer::string_t_helper<...>::type". CI's pinned libclang 18.1.1 on Linux spells it "operator typename string_t_helper<...>::type", so check_api_docs reported the file as out of date. This restores CI's spelling, which is byte-identical to the file CI regenerated. Signed-off-by: Niels Lohmann <mail@nlohmann.me>	2026-09-27 21:37:14 +02:00
Niels Lohmann	2319f6e6f9	Address Codacy findings in the API checker scripts Put multi-line docstring summaries on their own line, as a single sentence followed by a blank line (pydocstyle D205, D209, D213, D415). Annotate the subprocess import and calls with nosec: they only run fixed argument lists, never through a shell (Bandit B404, B603, B607). Do the same for the three broad except clauses in extract_api.py, which deliberately fall through to the next libclang candidate or skip an unresolvable alias (Bandit B110, B112). Signed-off-by: Niels Lohmann <mail@nlohmann.me>	2026-09-27 18:09:03 +02:00
Niels Lohmann	9a0d1c0c47	Merge branch 'develop' into claude/todo-191-plan-508110 Resolve the conflict in docs/mkdocs/docs/home/architecture.md by taking develop's rewritten page and pointing its ordered_map links at the moved api/ordered_map/index.md. Also update the ordered_map.md links develop added in ordered_json.md, object_order.md, and template_parameters.md. Regenerate api_surface.json for the new BON8 functions and the changed comparison operator. Restrict the documented_non_public leak check to @sa URLs into json.nlohmann.me: develop now uses @sa to link GitHub issues from private members such as copy_structured, which is not a documentation leak. Signed-off-by: Niels Lohmann <mail@nlohmann.me>	2026-09-27 18:07:00 +02:00
Niels Lohmann	1bbb5d400a	Regenerate api_surface.json after merging develop develop added JSON_HEDLEY_WARN_UNUSED_RESULT to a number of basic_json members (#5520) and reworked operator<<'s output adapter, so the committed API surface no longer matched what extract_api.py produces and the "Check for uncommitted API surface changes" step failed. This is the patch the workflow itself uploads for that purpose; the changes are limited to recorded signatures plus the way libclang spells json_pointer's conversion operator. Signed-off-by: Niels Lohmann <mail@nlohmann.me>	2026-09-15 10:06:55 +02:00
Niels Lohmann	08d18d5a82	Merge remote-tracking branch 'origin/develop' into HEAD	2026-09-14 21:26:29 +02:00
Niels LohmannandClaude Sonnet 5	a27065bd12	Regenerate api_surface.json after merging develop develop gained iterator+sentinel support for accept()/parse()/sax_parse()/ from_cbor()/from_msgpack()/from_ubjson()/from_bjdata()/from_bson() (#5205) since this branch was created, which check_api_docs.yml's drift check caught immediately: GitHub's pull_request trigger checks out the PR-vs-base merge commit, not the PR branch in isolation, so CI was comparing the committed api_surface.json (generated before that upstream change existed) against a fresh extraction of a json.hpp that already had it. This superseded an earlier, incorrect diagnosis of the same symptom (a JSON_HAS_RANGES cross-environment pin) -- that fix remains in place since it's still a real, independent determinism improvement for three other JSON_HAS_RANGES-gated locations in type_traits.hpp, but it wasn't the actual cause of this particular mismatch: these new overloads turned out to be unconditional (SFINAE-gated via can_compare_ne, not preprocessor-gated), so no environment-detection difference was involved here at all. Signed-off-by: Niels Lohmann <mail@nlohmann.me> Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> Signed-off-by: Niels Lohmann <mail@nlohmann.me>	2026-07-11 23:45:46 +02:00
Niels Lohmann	3940f4b730	Merge remote-tracking branch 'origin/develop' into claude/todo-191-plan-508110	2026-07-11 23:43:30 +02:00
Niels LohmannandClaude Sonnet 5	0663907b68	Fix cross-environment API-surface drift and lint findings from CI extract_api.py's own extraction wasn't deterministic across machines, which CI's drift check caught immediately: JSON_HAS_RANGES auto-detects via the standard library's __cpp_lib_ranges feature-test macro, which isn't reliably gated to C++20 mode by every stdlib -- undefined under -std=c++17 with macOS's libc++, but defined under the identical flag with the Ubuntu stdlib CI uses, so parse()/accept()/from_*() extracted different signatures purely depending on which machine ran the extraction. Pinned to -DJSON_HAS_RANGES=0: the deterministic and safe choice, since pinning to 1 was tried first and found to fail to parse on a stdlib without full <ranges> support even when the macro claims otherwise. Also found and fixed a second, independent source of the same class of drift: get_identity_name() used cursor.spelling verbatim for CONVERSION_FUNCTION cursors, which libclang renders as its own internally-canonicalized form of the return type rather than what's literally written. Confirmed for json_pointer::operator string_t() spelling differently on two machines pinned to the identical libclang==18.1.1 wheel, with the JSON_HAS_RANGES fix above ruled out as the cause. Now derived from the cursor's own raw source text instead, immune to libclang's dependent-type resolution differences and incidentally more readable than the libclang-internal forms it replaces. Bumped SURFACE_FORMAT_VERSION to 3 and regenerated all 27 history snapshots and the committed api_surface.json; both fixes are documented in tools/api_checker/history/README.md's format-history log. Also fixes diff_api.py's format_version guard, which only compared the two loaded surfaces against each other and never against SURFACE_FORMAT_VERSION (what this build actually understands) -- two surfaces on the same, newer-than-expected format_version would have silently passed the guard. Remaining fixes are the concretely actionable findings from Codacy's review of the new tools/api_checker/ files: unused imports/variables, a stray f-string with no placeholders. Left the docstring-formatting nitpicks (pydocstyle D2xx/D4xx) and generic subprocess-usage notices alone -- the former has no established convention elsewhere in this codebase's Python tooling to conform to, and the latter are inherent to a dev tool that shells out to git/clang with developer-controlled arguments, not user input. Signed-off-by: Niels Lohmann <mail@nlohmann.me> Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> Signed-off-by: Niels Lohmann <mail@nlohmann.me>	2026-07-11 18:59:19 +02:00
Niels LohmannandClaude Sonnet 5	f23b3c63a2	Add AST-based public API checker and fix documentation gaps it found (#3691 ) Adds tools/api_checker/: extract_api.py derives the public API surface directly from the libclang AST (independent of documentation status), check_docs.py flags public entries missing @sa links (and @sa on non-public ones), diff_api.py does an overload-aware breaking/feature diff between two refs, check_macros.py cross- checks documented macros against #define sites, and snapshot_release.py backfills immutable per-release surface snapshots into tools/api_checker/history/ (v3.1.0 through v3.12.0) so diff_api.py can compare releases without live extraction. POLICY.md documents what counts as public API and what stability is guaranteed. Running this tooling against the current tree found and fixed a real documentation backlog: ~25 new API doc pages (ordered_map's methods, json_sax's ctor/dtor/ operator=, byte_container_with_subtype's comparison operators, several orphaned type aliases), each with a compiled and output-verified example, plus missing @sa comments and stale/incorrect Version History entries on several existing pages (found by diffing consecutive release pairs and checking whether the resulting change was actually reflected in the target page's history section). Also adds docs/home/api_changes.md, a per-release, per-function reference of public API changes (v3.1.0 through v3.12.0) generated from the history/ snapshots, complementing (not replacing) the existing release notes. Along the way, found and fixed several extractor bugs by testing against real release tags rather than trusting the algorithm in isolation -- most notably an identity-key scheme based on libclang's USR that encoded the enclosing class template's own arity, and a since-renamed ABI inline-namespace pattern (json_v3_11_0 vs. today's json_abi_v3_11_2) that neither of two earlier regex attempts stripped correctly. Both are documented in extract_api.py's docstrings and tools/api_checker/history/README.md so the failure mode doesn't recur silently. .github/workflows/check_api_docs.yml runs extract_api.py + check_docs.py in CI, advisory-only for now (documented backlog may not be at zero for entities this PR didn't touch), plus a blocking drift check on the committed tools/api_checker/api_surface.json. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> Signed-off-by: Niels Lohmann <mail@nlohmann.me>	2026-07-11 18:59:00 +02:00
`@@ -84,4 +84,4 @@ constructor.`

	`## Version history`	`## Version history`

	`- Added in version 3.0.0.`	`- Since version 3.0.0.`
`@@ -75,4 +75,4 @@ classDiagram`

	`## Version history`	`## Version history`

	`- Added in version 3.0.0.`	`- Since version 3.0.0.`
`@@ -51,4 +51,4 @@ deserializes. See [Template Parameter Requirements](../../features/types/templat`

	`## Version history`	`## Version history`

	`- Added in version 2.1.0.`	`- Since version 2.0.0.`
`@@ -76,4 +76,4 @@ classDiagram`

	`## Version history`	`## Version history`

	`- Added in version 3.0.0.`	`- Since version 3.0.0.`
`@@ -84,4 +84,4 @@ or the end of file. This also holds true when reading a byte vector for binary f`

	`## Version history`	`## Version history`

	`- Added in version 3.0.0.`	`- Since version 3.0.0.`
`@@ -51,4 +51,4 @@ byte_container_with_subtype(container_type&& container, subtype_type subtype);`

	`## Version history`	`## Version history`

	`Added in version 3.8.0.`	`Since version 3.8.0.`
`@@ -39,4 +39,4 @@ Constant.`

	`## Version history`	`## Version history`

	`Added in version 3.8.0.`	`Since version 3.8.0.`
`@@ -42,4 +42,4 @@ Constant.`

	`## Version history`	`## Version history`

	`Added in version 3.8.0.`	`Since version 3.8.0.`
`@@ -44,4 +44,4 @@ Constant.`

	`## Version history`	`## Version history`

	`Added in version 3.8.0.`	`Since version 3.8.0.`