update

config/shared/addpaths

@@ -3,7 +3,7 @@
 set -euo pipefail
 
 usage() {
-  echo "Usage: $0 -c COMMENT_SYMBOL [-e EXCLUDE_PATTERN]... TARGET"
+  echo "Usage: $(basename "$0") -c COMMENT_SYMBOL [-e EXCLUDE_PATTERN]... TARGET"
   echo "  -c  Comment symbol (e.g., '#' or '//')"
   echo "  -e  Exclude pattern (can be specified multiple times)"
   echo "  TARGET  File or directory to process"
@@ -29,21 +29,10 @@ shift $((OPTIND - 1))
 target="$(realpath "$1")"
 base_dir="$(pwd)"
 
-should_exclude() {
-  local path="$1"
-  for pattern in "${excludes[@]}"; do
-    if [[ "$path" == *"$pattern"* ]]; then
-      return 0
-    fi
-  done
-  return 1
-}
-
 process_file() {
   local file="$1"
-  local rel_path="${file#"$base_dir"/}"
-
-  should_exclude "$rel_path" && return
+  # shellcheck disable=SC2295
+  local rel_path="${file#$base_dir/}"
 
   local path_comment="$comment_sym path: $rel_path"
 
@@ -52,22 +41,37 @@ process_file() {
   IFS= read -r line1 <"$file" 2>/dev/null || line1=""
   IFS= read -r line2 < <(tail -n +2 "$file") 2>/dev/null || line2=""
 
-  # Check if path comment exists in first or second line
-  [[ "$line1" == *"path: "* ]] && return
-  [[ "$line2" == *"path: "* ]] && return
-
-  # Insert after shebang if present, otherwise at top
+  # Handle shebang case
   if [[ "$line1" =~ ^#! ]]; then
-    {
-      echo "$line1"
-      echo "$path_comment"
-      tail -n +2 "$file"
-    } >"$file.tmp"
+    if [[ "$line2" == *"path: "* ]]; then
+      # Replace existing path comment on line 2
+      {
+        echo "$line1"
+        echo "$path_comment"
+        tail -n +3 "$file"
+      } >"$file.tmp"
+    else
+      # Insert new path comment after shebang
+      {
+        echo "$line1"
+        echo "$path_comment"
+        tail -n +2 "$file"
+      } >"$file.tmp"
+    fi
   else
-    {
-      echo "$path_comment"
-      cat "$file"
-    } >"$file.tmp"
+    if [[ "$line1" == *"path: "* ]]; then
+      # Replace existing path comment on line 1
+      {
+        echo "$path_comment"
+        tail -n +2 "$file"
+      } >"$file.tmp"
+    else
+      # Insert new path comment at top
+      {
+        echo "$path_comment"
+        cat "$file"
+      } >"$file.tmp"
+    fi
   fi
 
   mv "$file.tmp" "$file"
@@ -76,9 +80,26 @@ process_file() {
 if [[ -f "$target" ]]; then
   process_file "$target"
 elif [[ -d "$target" ]]; then
+  find_cmd=(find "$target")
+
+  # Always exclude hidden files and directories
+  find_cmd+=(\( -name ".*" -prune \))
+
+  if [[ ${#excludes[@]} -gt 0 ]]; then
+    find_cmd+=(-o \()
+    for i in "${!excludes[@]}"; do
+      [[ $i -gt 0 ]] && find_cmd+=(-o)
+      find_cmd+=(-path "*/${excludes[$i]}" -prune)
+      find_cmd+=(-o -path "*/${excludes[$i]}/*" -prune)
+    done
+    find_cmd+=(\))
+  fi
+
+  find_cmd+=(-o -type f -print0)
+
   while IFS= read -r -d '' file; do
     process_file "$file"
-  done < <(find "$target" -type f -print0)
+  done < <("${find_cmd[@]}")
 else
   echo "Error: $target is not a file or directory" >&2
   exit 1