Fix issue #209, "precommand modifiers at non-command-word position".

highlighters/main/main-highlighter.zsh

@@ -261,7 +261,10 @@ _zsh_highlight_main_highlighter()
     # if a style_override was set (eg in _zsh_highlight_main_highlighter_check_path), use it
     [[ -n $style_override ]] && style=$ZSH_HIGHLIGHT_STYLES[$style_override]
     (( already_added )) || _zsh_highlight_main_add_region_highlight $start_pos $end_pos $style
-    [[ -n ${(M)ZSH_HIGHLIGHT_TOKENS_FOLLOWED_BY_COMMANDS:#"$arg"} ]] && next_word+=':start:'
+    if [[ -n ${(M)ZSH_HIGHLIGHT_TOKENS_COMMANDSEPARATOR:#"$arg"} ]] ||
+       [[ -n ${(M)ZSH_HIGHLIGHT_TOKENS_PRECOMMANDS:#"$arg"} && $this_word == *':start:' ]]; then
+      next_word+=':start:'
+    fi
     [[ -n ${(M)ZSH_HIGHLIGHT_TOKENS_COMMANDSEPARATOR:#"$arg"} ]] && highlight_glob=true
     start_pos=$end_pos
     this_word=$next_word

highlighters/main/test-data/precommand.zsh

@@ -33,5 +33,5 @@ BUFFER=': command zzzzzz'
 expected_region_highlight=(
   "1 1 $ZSH_HIGHLIGHT_STYLES[command]" # ls
   "3 9 $ZSH_HIGHLIGHT_STYLES[default]" # not precommand
-  "11 16 $ZSH_HIGHLIGHT_STYLES[default] 'issue #209'" # not unknown-token (since 'zzzzzz' is not a command)
+  "11 16 $ZSH_HIGHLIGHT_STYLES[default]" # not unknown-token (since 'zzzzzz' is not a command)
 )