fix: script splits on / (no spaces needed), exceptions for Au/Ra & HUNTR/X

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

fix-artist-separators.sh

@@ -1,18 +1,13 @@
 #!/usr/bin/env bash
 # fix-artist-separators.sh
-# Replaces " / " (space-slash-space) in audio file artist tags with ";"
-#
-# Safe: only matches " / " with surrounding spaces, so Au/Ra and HUNTR/X
-# (no spaces around the slash) are left completely untouched.
+# Splits artist tags on "/" into ";" — with hardcoded exceptions for artist
+# names that legitimately contain "/" (Au/Ra, HUNTR/X).
 #
 # Requires: ffprobe, ffmpeg, python3
 #
 # Usage:
 #   bash fix-artist-separators.sh [music_dir]           -- dry run (no changes)
 #   bash fix-artist-separators.sh [music_dir] --apply   -- actually modify files
-#
-# Example:
-#   bash fix-artist-separators.sh /opt/navidrome/music --apply
 
 MUSIC_DIR="${1:-/opt/navidrome/music}"
 APPLY=false
@@ -26,15 +21,54 @@ fi
 if $APPLY; then
   echo "🔧  APPLY mode — files will be modified"
 else
-  echo "🔍  DRY RUN — no files will be changed (add --apply to apply changes)"
+  echo "🔍  DRY RUN — no files will be changed (add --apply to apply)"
 fi
 echo "📂  Scanning: $MUSIC_DIR"
+echo "🚫  Exceptions: Au/Ra, HUNTR/X"
 echo ""
 
 count_found=0
 count_ok=0
 count_fail=0
 
+# Splits artist string on "/" while preserving exception names.
+# Example: "HUNTR/X/EJAE/AUDREY NUNA" -> "HUNTR/X;EJAE;AUDREY NUNA"
+#          "-Prey/zecki"               -> "-Prey;zecki"
+#          "Au/Ra"                     -> "Au/Ra"  (exception, unchanged)
+SPLIT_PY='
+import sys
+
+EXCEPTIONS = ["Au/Ra", "HUNTR/X"]
+exc_lookup = [(exc, exc.lower(), exc.split("/")) for exc in EXCEPTIONS]
+
+def smart_split(artist):
+    parts = artist.split("/")
+    result = []
+    i = 0
+    while i < len(parts):
+        matched = False
+        for exc, exc_lower, exc_parts in exc_lookup:
+            n = len(exc_parts)
+            candidate = parts[i:i+n]
+            if len(candidate) == n and "/".join(candidate).lower() == exc_lower:
+                result.append(exc)
+                i += n
+                matched = True
+                break
+        if not matched:
+            p = parts[i].strip()
+            if p:
+                result.append(p)
+            i += 1
+    return ";".join(result)
+
+artist = sys.stdin.read().strip()
+if "/" not in artist:
+    print(artist)
+else:
+    print(smart_split(artist))
+'
+
 get_artist() {
   ffprobe -v quiet -print_format json -show_format "$1" 2>/dev/null \
     | python3 -c "
@@ -47,11 +81,12 @@ print(next((v for k, v in tags.items() if k.lower() == 'artist'), ''))
 
 while IFS= read -r -d '' file; do
   artist=$(get_artist "$file") || continue
-  [[ "$artist" != *" / "* ]] && continue
+  [[ "$artist" != *"/"* ]] && continue
+
+  new_artist=$(echo "$artist" | python3 -c "$SPLIT_PY" 2>/dev/null) || continue
+  [[ "$artist" == "$new_artist" ]] && continue
 
-  new_artist="${artist// \/ /;}"
   count_found=$((count_found + 1))
-
   echo "📄  $file"
   echo "    Before : $artist"
   echo "    After  : $new_artist"
@@ -77,13 +112,10 @@ done < <(find "$MUSIC_DIR" -type f \( \
   -name "*.opus" \) -print0)
 
 echo "━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━"
-echo "Files with \" / \" in artist tag: $count_found"
+echo "Files to change: $count_found"
 if $APPLY; then
   echo "Updated: $count_ok  |  Failed: $count_fail"
-  if [[ $count_ok -gt 0 ]]; then
-    echo ""
-    echo "💡 Trigger a Navidrome rescan to pick up the changes."
-  fi
+  [[ $count_ok -gt 0 ]] && echo "" && echo "💡 Trigger a Navidrome rescan to pick up the changes."
 else
   echo ""
   echo "Run with --apply to fix them:"