Re: [PATCH v2 1/2] string: Add strprefix(), and deprecate str_has_prefix()

[Maciej W. Rozycki]

On Sat, 7 Nov 2026, Alejandro Colomar wrote:

> Hi Maciej,
> 
> > Date: 2026-11-07 02:44:23+0000
> > From: "Maciej W. Rozycki" <macro@xxxxxxxxxxx>
> >
> > On Thu, 5 Nov 2026, Alejandro Colomar wrote:
> > 
> > > Do you think strafterprefix() would be better?  Do you have any other
> > > suggestions?
> > 
> >  FWIW strsuffix() seems an obvious choice to me.  After all what the API 
> > does is request the string's suffix beyond the specified leading part.
> 
> Actually, strsuffix() is something else:
> 
> 	char *
> 	strsuffix_(const char *str, const char *suffix)
> 	{
> 		ptrdiff_t  off;
> 
> 		off = strlen(str) - strlen(suffix);
> 		if (off < 0)
> 			return NULL;
> 
> 		if (!streq(str + off, suffix))
> 			return NULL;
> 
> 		return str + off;
> 	}
> 
> It finds the start of a suffix in a string.  That is:
> 
> 	strcmp(strsuffix("foobar", "bar"), "bar") == 0;

 Hmm, I'd have called that strskipto().  If that's not possible for some 
reason (I can't see it used in Linux), then strskip() or strskipover() 
could be used for this API.

 FWIW,

  Maciej