Refinee before-submit script.

.github/bin/before-submit.sh

diff --git a/.github/bin/before-submit.sh b/.github/bin/before-submit.sh
index e8ba9dd..4a707f0 100755
--- a/.github/bin/before-submit.sh
+++ b/.github/bin/before-submit.sh
@@ -6,9 +6,11 @@
 cd ${PROJECT_ROOT}
 
 RUN_CLANG_TIDY=1
+RUN_ALL_CPP_STD=1
 while [ $# -ne 0 ]; do
   case $1 in
     --skip-clang-tidy) RUN_CLANG_TIDY=0;;
+    --skip-cpp-std) RUN_ALL_CPP_STD=0;;
     *)
       echo "Unknown option $1"
       exit 1
@@ -18,11 +20,12 @@
 done
 
 if [ -t 1 ]; then
-  BOLD=$'\033[7m'
-  RED=$'\033[1;30;41m'
+  BOLD=$'\033[1m'
+  INVERSE=$'\033[7m'
+  RED=$'\033[1;37;41m'
   NORM=$'\033[0m'
 else
-  BOLD=""
+  INVERSE=""
   NORM=""
 fi
 
@@ -35,31 +38,34 @@
   fi
 }
 
-echo "${BOLD}-- Build bant if not already (comp-db, build-cleaner) --${NORM}"
+echo "${INVERSE}-- Build bant if not already (comp-db, build-cleaner) --${NORM}"
 BANT=$($(dirname $0)/get-bant-path.sh)
 
 # Compilation DB is needed for clang-tidy, but also
 # makes sure all external dependencies have been fetched so that
 # bant build cleaner can do a good job.
-echo "${BOLD}-- Refresh compilation db --${NORM}"
+echo "${INVERSE}-- Refresh compilation db --${NORM}"
 .github/bin/make-compilation-db.sh
 check_exit
 
-echo "${BOLD}-- Run build cleaner --${NORM}"
+echo "${INVERSE}-- Run build cleaner --${NORM}"
 . <(${BANT} dwyu ...)
 
-echo "${BOLD}-- Run all tests --${NORM}"
+echo "${INVERSE}-- Run all tests --${NORM}"
 bazel test -c opt --test_summary=terse ...
 check_exit
 
-for cpp_standard in c++20 c++23 ; do
-  echo "${BOLD}-- Run tests wtih -std=${cpp_standard} --${NORM}"
-  bazel test -c opt --cxxopt=-std=${cpp_standard} --test_summary=terse ...
-  check_exit
-done
+if [ "${RUN_ALL_CPP_STD}" -eq 1 ]; then
+  echo "${BOLD}Running other c++ standards. Skip with --skip-cpp-std${NORM}"
+  for cpp_standard in c++20 c++23 ; do
+    echo "${INVERSE}-- Run tests wtih -std=${cpp_standard} --${NORM}"
+    bazel test -c opt --cxxopt=-std=${cpp_standard} --test_summary=terse ...
+    check_exit
+  done
+fi
 
 if [ "${RUN_CLANG_TIDY}" -eq 1 ]; then
-  echo "${BOLD}-- Running clang-tidy and cache results --${NORM}"
+  echo "${INVERSE}-- Running clang-tidy and cache results --${NORM}"
   echo "This will take a while if run the first time and no cache has"
   echo "been created yet. Can't wait ? Skip with "
   echo "  $0 --skip-clang-tidy"
@@ -67,10 +73,10 @@
   check_exit
 fi
 
-echo "${BOLD}-- Format code and BUILD files --${NORM}"
+echo "${INVERSE}-- Format code and BUILD files --${NORM}"
 .github/bin/run-format.sh
 
-echo "${BOLD}-- Check for other potential problems --${NORM}"
+echo "${INVERSE}-- Check for other potential problems --${NORM}"
 .github/bin/check-potential-problems.sh
 check_exit