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Re: please help with font-lock-add-keywords


From: Lennart Borgman
Subject: Re: please help with font-lock-add-keywords
Date: Thu, 7 Jan 2010 02:01:40 +0100

On Thu, Jan 7, 2010 at 1:39 AM, David Combs <address@hidden> wrote:
>>> (add-hook 'lisp-mode-hook
>>>        (lambda ()
>>>          (font-lock-add-keywords
>>>           nil
>>>              '(("\\<\\(qbb-create-image\\|qbb-destroy-image\\)\\>" .
>>>                 font-lock-keyword-face)))))
>>
>>Looks correct.  But when using the ("regexp" . face) form, you can use
>>shy groups for performance reasons, because here you refer to the whole
>
> Please, what is a "shy group"?   Some math thing?


It is a group that does not record sub expressions in the match.
Written with (?: ...) like

             '(("\\<\\(?:qbb-create-image\\|qbb-destroy-image\\)\\>" .




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