Re: [bug-gnulib] Re: Question concerning c-ctype, c-strcase, c-strcasestr and c-strstr modules

[Yoann Vandoorselaere]

On Tue, 2006-11-14 at 11:40 +0100, Bruno Haible wrote:
> Yoann Vandoorselaere wrote:
> > Solaris 9 apparently lack the strcasestr() function.
> 
> If the program needs strcasestr(), then it needs the 'strcasestr' module.
> It defines a replacement for strcasestr().
> 
> > Might we modify the 
> > c-strcasestr module so that it provide a replacement for platform
> > lacking the function now that one is identified?
> 
> The c-strcasestr module defines a variant of strcasestr that ignores the
> user's locale. c_strcasestr() and strcasestr() are not equivalent.

Quoting Eric Blake:

"However, if we have a platform missing strcasestr, then using
c_strcasestr as the substitute implementation is probably okay, because
that platform would probably be broken in other areas, such as locale
support, such that a locale-aware replacement strcasestr would not be
worth the effort."


Also, depending on the program or library using the fallback GnuLib
module, you might not want a version of the function supporting locale,
for performance reason or because of the number of dependencies it would
bring, and the resulting library size. 

As an example, on a recent Linux system, importing the strcasestr module
generate a library more than twice the size of one importing
c_strcasestr.

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Yoann Vandoorselaere | Responsable R&D / CTO | PreludeIDS Technologies
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