Git Hooks: Fix and test binary file moves (#19)

Co-authored-by: Sebastian Parborg <sebastian@blender.org>
Reviewed-on: https://projects.blender.org/infrastructure/gitea-custom/pulls/19

git-hooks/deny-binary

@@ -48,8 +48,11 @@ while read oldrev newrev refname; do
     git cat-file --batch-check='%(objectname) %(objecttype) %(objectsize) %(rest)' | grep commit | awk '{print $1}'); do
 
     # Get list of potentially binary files in this commit
-    mapfile -t binary_files < <(git log --diff-filter=d --pretty=format:%H -M100% --numstat ${commit}^! | grep -e "-	-	\w" | awk '{print $3}')
-    
+    mapfile -t binary_files < <(
+      git log --diff-filter=d --pretty=format:%H -M100% --numstat ${commit}^! |
+      awk -F'\t' '$1=="-" && $2=="-" {print $3}'
+    )
+
     if [ ${#binary_files[@]} -eq 0 ]; then
       continue
     fi
@@ -62,6 +65,12 @@ while read oldrev newrev refname; do
 
     rejected_files=()
     for file in "${binary_files[@]}"; do
+      if [[ $file == *" => "* ]]; then
+        # If the name contains " => " then this probably means the file was moved.
+        # If it was just moved, then it must still be a binary file.
+        rejected_files+=("$file")
+        continue
+      fi
       # Check if it's an LFS pointer
       # Use handle_pipefails as we may run into SIGPIPE error code
       if git show "${commit}:${file}" | git lfs pointer --check --stdin || handle_pipefails $?; then