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test and doc whitespace control for expressions

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pantor
2020-08-12 19:57:20 +02:00
parent ed58da75a6
commit 1590bcebef
2 changed files with 7 additions and 2 deletions
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5
README.md
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@@ -260,13 +260,14 @@ env.set_trim_blocks(true);
env.set_lstrip_blocks(true);
```
With both `trim_blocks` and `lstrip_blocks` enabled, you can put statements on their own lines. Furthermore, you can also strip whitespaces by hand. If you add a minus sign (`-`) to the start or end of a statement, the whitespaces before or after that block will be removed:
With both `trim_blocks` and `lstrip_blocks` enabled, you can put statements on their own lines. Furthermore, you can also strip whitespaces for both statements and expressions by hand. If you add a minus sign (`-`) to the start or end, the whitespaces before or after that block will be removed:
```.cpp
render("Hello {{- name -}} !", data); // "Hello Inja!"
render("{% if neighbour in guests -%} I was there{% endif -%} !", data); // Renders without any whitespaces
```
Stripping behind a statement also remove any newlines.
Stripping behind a statement or expression also removes any newlines.
### Callbacks

4
test/test-renderer.cpp
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@@ -204,6 +204,10 @@ TEST_CASE("templates") {
CHECK(env.render("Test\n {%- if is_happy %}{{ name }}{% endif %} ", data) == "Test\nPeter ");
CHECK(env.render(" {%+ if is_happy %}{{ name }}{% endif %}", data) == " Peter");
CHECK(env.render(" {%- if is_happy %}{{ name }}{% endif -%} \n ", data) == "Peter");
CHECK(env.render(" {{- name -}} \n ", data) == "Peter");
CHECK(env.render("Test\n {{- name }} ", data) == "Test\nPeter ");
CHECK(env.render(" {{ name }}\n ", data) == " Peter\n ");
// Nothing will be stripped if there are other characters before the start of the block.
CHECK(env.render(". {%- if is_happy %}{{ name }}{% endif -%}\n", data) == ". Peter");