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bug#587: 23.0.60; To source or not to source (from help)

From: Lennart Borgman (gmail)
Subject: bug#587: 23.0.60; To source or not to source (from help)
Date: Fri, 08 Aug 2008 13:09:10 +0200
User-agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv: Gecko/20071031 Thunderbird/ Mnenhy/

martin rudalics wrote:
 > If you do C-h v and look at a variable and click on the library link in
 > the help buffer you will go to the file in your current Emacs tree. If
 > you do C-h f to look at a function and do the same you will be taken to
 > the cvs checkout file instead.

I suspect you compiled Emacs in the checkout directory and then copied
the Emacs tree to another directory.

I use the normal

  make install INSTALL_DIR=...

In this case the following might
happen: As for C-h f `describe-function-1' will execute

      ;; See if lisp files are present where they where installed from.
      (if (not (eq file-name 'C-source))
      (setq file-name (find-source-lisp-file file-name)))

which sets `file-name' to the ".el" file from the checkout directory
(because you did compile it there) and installs the corresponding
reference in the hyperlink.

As for C-h v `describe-variable' does _not_ care whether you compiled in
another directory and simply goes to the file supplied by `symbol-file'.
You could try inserting the snipped above in `describe-variable'
immediately before the line

          (if file-name

and see whether it now jumps to the checkout directory instead.

Yes, I guess that is correct.

Personally, I'd prefer something like the following in both cases:

      (unless (or (eq file-name 'C-source)
          (file-exists-p file-name))
    (setq file-name (find-source-lisp-file file-name)))

Thanks martin. I think a variable (or an option) for which elisp to go to would be the best. Is there any reason not to have that?

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