Re: font-locking and open parens in column 0

[Stefan Monnier <monnier@iro.umontreal.ca>]

>> > The cause of this (as Martin (almost) discerned) is that the handling of
>> > (eq open-paren-in-column-0-is-defun-start nil) in begining-of-defun-raw
>> > hasn't been implemented.  The function just looks for a "(" in C0
>> > regardless of that variable.

According to its docstring, the current behavior is correct:

   Normally a defun starts when there is a char with open-parenthesis
   syntax at the beginning of a line.

I think the bug is in cc-mode's use of beginning-of-defun.
BTW, the alternative used in elisp might be OK as well: flag with a big
`warning' face those spots in the file which match defun-prompt-regexp (or
where the line starts with an open paren) but which are inside a comment or
string.  This way you may get erroneous fontification, but the root cause is
clearly marked.



        Stefan