only *.c files; use 2 passes

Author: 2bndy5

.github/workflows/perf-test.yml

@@ -86,21 +86,21 @@ jobs:
         # - create the .cpp-linter_cache folder
         # - list the files concerning the benchmark test
         # NOTE: This does not actually invoke clang tools.
-        run: ../previous/cpp-linter -l 0 -p build -i='|!src/libgit2' -s="" -c="-*"
+        run: ../previous/cpp-linter -l 0 -p build -i='|!src/libgit2' -s="" -c="-*" -e c
       - name: Run hyperfine tool
         # using the generated compilation database,
-        # we will use cpp-linter (both builds) to scan libgit2 sources.
+        # we will use cpp-linter (both builds) to scan libgit2 src/libgit2/**.c files.
         working-directory: libgit2
         run: >-
           hyperfine
-          --runs 1
+          --runs 2
           --style color
           --export-markdown '${{ runner.temp }}/benchmark.md'
           --export-json '${{ runner.temp }}/benchmark.json'
           --command-name=previous-build
-          "../previous/cpp-linter -l 0 -p build -i='|!src/libgit2'"
+          "../previous/cpp-linter -l 0 -p build -i='|!src/libgit2' -e c"
           --command-name=current-build
-          "../current/cpp-linter -l 0 -p build -i='|!src/libgit2'"
+          "../current/cpp-linter -l 0 -p build -i='|!src/libgit2' -e c"
       - name: Append report to job summary
         run: cat ${{ runner.temp }}/benchmark.md >> $GITHUB_STEP_SUMMARY
       - name: Upload JSON results