add script to remove trailing whitespace

<!-- ps-id: 925b1ad7-6f77-4af7-9bcc-67adb5a6f2f9 -->

Signed-off-by: Ali Caglayan <[email protected]>

.github/workflows/whitespace.yml

@@ -17,8 +17,8 @@ jobs:
     - name: Check for trailing whitespaces
       run: |
         if git grep --cached -n --ignore-case --perl-regexp '\s$' :; then
-          echo "Trailing whitespaces found. Please remove with:\n\
-          git grep -l -z -E '\s+$' | xargs -0 sed -i 's/\s\+$//'"
+          echo "Trailing whitespaces found. Please remove with:\
+          etc/fix_trailing_whitespace.sh"
           exit 1
         fi
 
@@ -28,9 +28,9 @@ jobs:
           # Check if the file is a regular file and not in the .git directory
           if [ -f "$file" ] && [ "$(dirname "$file")" != ".git" ]; then
             if [ -n "$(tail -c 1 "$file")" ]; then
-              echo "File $file does not end with a newline. Adding newline..."
-              echo >> "$file"
-              git add "$file"
+              echo "File $file does not end with a newline. Please fix with:\
+              bash ./etc/fix_end_newlines.sh"
+              exit 1
             fi
           fi
         done < <(git ls-files)

etc/fix_trailing_whitespace.sh

@@ -0,0 +1,5 @@
+#!/bin/bash
+
+# This command removes trailing whitespace from all files in the repository. 
+
+git grep -l -z -E '\s+$' | xargs -0 sed -i 's/\s\+$//'