> Make a buffer with this content:
> In-reply-to: "foo bar" of Fri, 15 Jul 2005 20:31:33 EDT
> --------
> (2 lines only)
> Then
> M-x mh-letter-mode
> M-x font-lock-fontify-buffer
> You get:
> font-lock-default-fontify-region: Wrong type argument: number-or-marker-p, nil
This is introduced by my recent change to font-lock.el which checks that we
do not get stuck in an empty match. Problem is that it bumps into a minor
bug in mh-font-lock-field-data:
(defun mh-font-lock-field-data (limit)
...
(if (and field (mh-letter-skipped-header-field-p field))
(set-match-data nil)
(set-match-data (list data-begin data-end data-begin data-end)))
(goto-char (if (equal point data-end) (1+ data-end) data-end))
t)))
As you can see, this function sometimes returns non-nil (i.e. it says it's
found a match) but with no begin/end of match 0.
I'm tempted to just revert my patch, since it causes constant run-time
checks and trips up some pre-existing code, only in the hope of occasionally
working around some bugs that would need to be fixed anyway.
Stefan
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