Re: mac os x: how do you run emacs in-place?

[Sam Steingold <sds@gnu.org>]

> * Jan D. <wna.u.q@fjvcarg.fr> [2014-11-27 12:00:27 +0100]:
>
> David Reitter skrev den 2014-11-26 22:36:
>> On Nov 26, 2014, at 4:25 PM, Sam Steingold <sds@gnu.org> wrote:
>>
>>> and I don't want to use that, mostly because clicking on file names in
>>> *Help* buffer finds the installed "el.gz" files instead of the files
>>> under version control.
>>
> I use this:
>
> (defadvice find-lisp-object-file-name (after my-find-in-source)
>   (if (stringp ad-return-value)
>       (let* ((str ad-return-value)
> 	     (idx (string-match "/lisp/" str))
> 	     (nfile (if idx (concat source-directory
> 				    (substring str idx)) nil)))
> 	(if (and nfile (file-exists-p nfile))
> 	    (setq ad-return-value nfile)))))
> (ad-activate 'find-lisp-object-file-name)

Thanks for the idea.
Here is my version (uses the "modern" advice):

(when (eq system-type 'darwin)
  (defun sds-ns-find-in-source (f &rest args)
    "Find lisp objects in sources and not installation."
    (let* ((value (apply f args))
           (nfile (and value
                       (string-match "/nextstep/Emacs.app/Contents/Resources/" value)
                       (concat source-directory (substring value (match-end 0))))))
      (if (and nfile (file-exists-p nfile))
          nfile value)))
  (advice-add 'find-lisp-object-file-name :around 'sds-ns-find-in-source))


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