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Properly handle relative symlinks when publishing

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* org-publish.el (org-publish-cache-ctime-of-src): Properly handle
relative symlinks.

At Thu, 07 Apr 2011 01:11:00 -0400,
Nick Dokos wrote:
>
> org-publish-cache-ctime-of-src tries (but does not always succeed) to
> deal with symlinks: file-symlink-p returns the target as a string, but
> if the target is relative to the symlink, that's not going to fly.
> e.g. if c is a symlink like this
>
>     /a/b/c->../d/f
>
> then (file-symlink-p "/a/b/c") -> "../d/f"
> but if the current directory is any place other than /a/b, the target
> will not be found, the file attributes are going to be nil and
> the function will blow up.
This commit is contained in:
David Maus 2011-06-26 20:02:42 +02:00 committed by Bastien Guerry
parent c4066dca8e
commit 60d24c01ea
1 changed files with 6 additions and 3 deletions
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9
lisp/org-publish.el
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@ -1157,9 +1157,12 @@ Returns value on success, else nil."
(defun org-publish-cache-ctime-of-src (filename)
"Get the FILENAME ctime as an integer."
(let ((src-attr (file-attributes (if (stringp (file-symlink-p filename))
(file-symlink-p filename)
filename))))
(let* ((symlink-maybe (or (file-symlink-p filename) filename))
(src-attr (file-attributes (if (file-name-absolute-p symlink-maybe)
symlink-maybe
(expand-file-name
symlink-maybe
(file-name-directory filename))))))
(+
(lsh (car (nth 5 src-attr)) 16)
(cadr (nth 5 src-attr)))))