Re: [emacs-pretest-bug] Re: C indentation error.

[Michael Cadilhac <michael.cadilhac@lrde.org>]

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Haven't seen  any comments  for this and  my boss complains  about his
<tab> key issuing errors when working on my files ;-)

Thanks in advance !

Michael Cadilhac <michael.cadilhac@lrde.org> writes:

> Richard Stallman <rms@gnu.org> writes:
>
>>     >   I got an  error with some C indentation in  macro definitions in GNU
>>     >  Emacs 22.0.50.34 (i686-pc-linux-gnu, X toolkit, Xaw3d scroll bars) of
>>     >  2006-03-02.
>>     >
>>     >   Error is triggered by:
>>     >
>>     >   With emacs -Q :
>>     >   In scratch, insert the following:
>>     >
>>     > #foo :\
>>     > bar
>>     >
>>     >   Toggle to c-mode, and try to indent the last line.
>>     >
>>     >   I get: Invalid search bound (wrong side of point).
>>
>> 	However, looking at the  code of search_command, I'm wondering why
>> 	an error could  be output even if  noerror is t or a  symbol [1] ;
>> 	fixing this that way :
>>
>> The noerror argument means "no error if the search fails".
>> Invalid arguments are a different issue.
>>
>> I will clarify this in the Lisp manual.
>>
>> So your proposed change in search.c should not be installed.
>
>   That's what I thought ; I was  trying to get a reaction for this bug
>   report ;-)
>
>> Instead, the  code in CC  mode should be  fixed not to  pass invalid
>> search bounds.
>
>   After a little more search, I propose the following change :
>
> Index: lisp/progmodes/cc-engine.el
> ===================================================================
> RCS file: /cvsroot/emacs/emacs/lisp/progmodes/cc-engine.el,v
> retrieving revision 1.47
> diff -c -r1.47 cc-engine.el
> *** lisp/progmodes/cc-engine.el 24 Feb 2006 15:33:02 -0000      1.47
> --- lisp/progmodes/cc-engine.el 19 Mar 2006 17:59:56 -0000
> ***************
> *** 5916,5922 ****
>                          ;; it shouldn't apply when we check the
>                          ;; preceding label.
>                          c-record-type-identifiers)
> !                    (c-forward-syntactic-ws)
>                      (c-forward-label nil pte start))))))))
>
>            ;; Check that the next nonsymbol token is ":".  Allow '('
> --- 5916,5922 ----
>                          ;; it shouldn't apply when we check the
>                          ;; preceding label.
>                          c-record-type-identifiers)
> !                    (c-forward-syntactic-ws pte)
>                      (c-forward-label nil pte start))))))))
>
>            ;; Check that the next nonsymbol token is ":".  Allow '('
>
> ----------------------------------------------------------------------
>
>   Well... It fixes the bug, really, but it doesn't investigate the bug
>   as it probably should be ;  the bug _may_ be in c-forward-sws, a too
>   long function for me to work on ;-)
>
>   Bye !

-- 
    Michael Cadilhac, a.k.a. Micha [mika] |
                    Epita/LRDE promo 2007 |   )\._.,--....,'``.
123 av. de Fontainebleau | 08.70.65.13.14 |  /.  _.. \   _\  (` ._,.
94270 Le Kremlin Bicetre | 06.23.20.31.30 | '._.-(,_..'--(,_...`-..'

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