testing meson mixed language version feature

Author: dreamer-coding

.github/workflows/meson_ci.yml

@@ -243,7 +243,7 @@ jobs:
             -w /workspace \
             ${GITHUB_REPOSITORY}:${{ matrix.distro }} \
             /bin/bash -c "
-              meson setup builddir --fatal-meson-warnings -Dwerror=true -Dwith_test=enabled -Dwarning_level=3 -Dc_std=c17
+              meson setup builddir --fatal-meson-warnings -Dwerror=true -Dwith_test=enabled -Dwarning_level=3
               meson compile -C builddir
               meson test -C builddir -v"
 

meson.build

@@ -2,6 +2,6 @@ project('Fossil Test', 'c', 'cpp',
     meson_version: '>=1.3.0',
     license: 'MPL-2.0',
     version: '1.0.7',
-    default_options: ['c_std=c18', 'cpp_std=c++20'])
+    default_options: ['c_std=c11,c18', 'cpp_std=c++20'])
 
 subdir('code')