'main': precommands += ssh-agent

highlighters/main/main-highlighter.zsh

@@ -321,6 +321,8 @@ _zsh_highlight_highlighter_main_paint()
     'catchsegv' ''
     'nohup' ''
     'setsid' :wc
+    # As of OpenSSH 8.1p1; -k is deliberately left out since it may not be followed by a command
+    'ssh-agent' aEPt:csDd
   )
 
   if [[ $zsyh_user_options[ignorebraces] == on || ${zsyh_user_options[ignoreclosebraces]:-off} == on ]]; then