zsh: add `bathelp` alias for highlighting commands' -h/--help flags

brethil_dotfile.sh

@@ -84,6 +84,11 @@ if [[ "$(command -v bat)" || "$(command -v batcat)" ]]; then
     export BAT_THEME="gruvbox-dark"
     export BAT_PAGER="less $LESS"
     export PAGER=bat
+
+    ## this breaks symlink testing with [ -h ], best not to activate it
+    # alias -g -- -h='-h 2>&1 | bat --language=help --style=plain'
+    alias bathelp='bat --language=help --style=plain'
+    alias -g -- --help='--help 2>&1 | bathelp '
 fi
 
 if [[ $SSH_CLIENT ]]; then