Re: regex fix for cygwin

["Alexander Varakin" <avarakin00 hotmail com>]

Hi,

I agree that we must use the second  approach, i.e.:

1. Use the mc's regex code, i.e. src/regex.c and src/eregex.h.
Maybe we should rename src/regex.c to src/eregex.c just to be consistent?
2. Reenable the mc's regex code for all platforms, i.e. remove those  "#if
0"  from  src/regex.c and src/eregex.h
3. Replace all instances of  #include "regex.h"  by  #include "eregex.h"
4. Unfortunately after this we must test it on all platforms, but I don't
think we will have any problems ...

This way we will be independent of the libc's or os's implementation of
regex.

> Is it sufficient, or your patch from the previous message is still
> required?
Yes, it is required, but instead of replacing "#if 0" by "ifdef __CYGWIN__"
we must just remove them, or maybe replace them by "#if emacs" which is the
original state of this code.

If this is ok with maintainers, I can do all these changes and send a final
patch.


Alex

----- Original Message -----
From: Pavel Roskin <proski gnu org>
To: Alexander Varakin <avarakin00 hotmail com>
Cc: <mc-devel gnome org>
Sent: Monday, February 25, 2002 1:01 AM
Subject: Re: regex fix for cygwin


> Hi, Alexander!
>
> Thank you for fixing the problem on Cygwin.  It is very important to fix
> this problem.
>
> My understanding is that MC uses some internal GNU regex functions.
> That's why it uses regex stripped of most other stuff that is supposed to
> be provided by libc.  But there is no guarantee that both regex
> implementations don't conflict.
>
> I see two approaches how to fix the problem:
>
> 1) Rename all non-standard regex functions and global variables to avoid
> conflicts with regex from libc.
>
> 2) Always use complete GNU regex, either from libc if it's there or from
> the files included into the distribution.
>
> I prefer the later.  I believe that your patch goes in that direction.
>
> > I found another bug related to regex - there is inconsistent usage of
> > regex.h and eregex.h in c files, and since they are very different in
> > cygwin, we have all sort of weird problems.
> > I just grepped all c files and replaced #include "regex.h" by  #include
> > "eregex.h", this fixed my problems.
>
>
> --
> Regards,
> Pavel Roskin
>
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