Handle non-specific file types in start-utils extraction logic

Also:
- assume zip type based on file extension when applicable

.github/workflows/sponsor-labeler.yml

@@ -1,5 +1,4 @@
-name: Sponsor Labeler
+name: Label Sponsor Contributions
-
 on:
   issues:
     types:
@@ -10,7 +9,15 @@ on:
 
 jobs:
   label-sponsor:
-    uses: itzg/github-workflows/.github/workflows/sponsor-labeler.yml@main
+    runs-on: ubuntu-latest
+    permissions:
+      pull-requests: write
+      issues: write
+
+    steps:
+      - name: Check if sponsor
+        uses: JasonEtco/is-sponsor-label-action@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         with:
-      author: ${{ github.event.issue.user.login || github.event.pull_request.user.login }}
+          label: sponsor
-      number: ${{ github.event.issue.number || github.event.pull_request.number }}

scripts/start-utils

@@ -560,6 +560,17 @@ function extract() {
   # remaining args are paths within the archive to extract; if none, extract everything
 
   type=$(file -b --mime-type "${src}")
+  if [[ "$type" == application/octet-stream ]]; then
+      logWarning "Detected non-specific file type $type for $src"
+      case "$src" in
+        *.zip)
+          log "Assuming zip from extension"
+          type=application/zip
+          ;;
+        # otherwise fall through to
+      esac
+  fi
+
   case "${type}" in
   application/zip)
     unzip -o -q -d "${destDir}" "${src}" "$@"