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

[Alejandro Colomar <alx@kernel.org>]

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Hi Maciej,

> Date: 2026-11-07 02:44:23+0000
> From: "Maciej W. Rozycki" <macro@orcam.me.uk>
>
> 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;


Have a lovely day!
Alex

> 
>   Maciej

-- 
<https://www.alejandro-colomar.es>

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