Perf: memoize _zsh_highlight_main_highlighter_check_path

highlighters/main/main-highlighter.zsh

@@ -1181,6 +1181,19 @@ _zsh_highlight_main_highlighter_highlight_path_separators()
 #
 # $2 should be non-zero iff we're in command position.
 _zsh_highlight_main_highlighter_check_path()
+{
+  if (( $+_zsh_highlight_main__path_cache )); then
+    local cache_key=$1$'\0'$2
+    if (( has_end && len == end_pos && !in_alias )) && [[ $WIDGET != zle-line-finish ]]; then
+      cache_key+=$'\0'
+    fi
+    local cache_val=$_zsh_highlight_main__path_cache[$cache_key]
+    if [[ -n $cache_val ]]; then
+      REPLY=${cache_val:1}
+      return $cache_val[1]
+    fi
+  fi
+
   {
     _zsh_highlight_main_highlighter_expand_path "$1"
     local expanded_path="$REPLY" tmp_path
@@ -1274,6 +1287,12 @@ _zsh_highlight_main_highlighter_check_path()
 
     # It's not a path.
     return 1
+  } always {
+    local -i ret=$((!!$?))
+    if (( $+_zsh_highlight_main__path_cache )); then
+      _zsh_highlight_main__path_cache[$cache_key]=$ret$REPLY
+    fi
+  }
 }
 
 # Highlight an argument and possibly special chars in quotes starting at $1 in $arg
@@ -1809,15 +1828,16 @@ _zsh_highlight_main__precmd_hook() {
   fi
 
   _zsh_highlight_main__command_type_cache=()
+  _zsh_highlight_main__path_cache=()
 }
 
 autoload -Uz add-zsh-hook
 if add-zsh-hook precmd _zsh_highlight_main__precmd_hook 2>/dev/null; then
-  # Initialize command type cache
-  typeset -gA _zsh_highlight_main__command_type_cache
+  # Initialize caches
+  typeset -gA _zsh_highlight_main__command_type_cache _zsh_highlight_main__path_cache
 else
   print -r -- >&2 'zsh-syntax-highlighting: Failed to load add-zsh-hook. Some speed optimizations will not be used.'
-  # Make sure the cache is unset
-  unset _zsh_highlight_main__command_type_cache
+  # Make sure the caches are unset
+  unset _zsh_highlight_main__command_type_cache _zsh_highlight_main__path_cache
 fi
 typeset -ga ZSH_HIGHLIGHT_DIRS_BLACKLIST