| @c Documentation of gnulib module 'c-strstr'. | |
| @c Copyright (C) 2008--2026 Free Software Foundation, Inc. | |
| @c Permission is granted to copy, distribute and/or modify this document | |
| @c under the terms of the GNU Free Documentation License, Version 1.3 or | |
| @c any later version published by the Free Software Foundation; with no | |
| @c Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A | |
| @c copy of the license is at <https://www.gnu.org/licenses/fdl-1.3.en.html>. | |
| @mindex c-strstr | |
| The @code{c-strstr} module contains a substring search function operating | |
| on single-byte character strings, that operate as if the locale encoding | |
| was ASCII. | |
| (The "C" locale on many systems has the locale encoding "ASCII".) | |
| The function is: | |
| @smallexample | |
| extern char *c_strstr (const char *haystack, const char *needle); | |
| @end smallexample | |
| Note: The function @code{strstr} from @code{<string.h>} supports only | |
| unibyte locales; | |
| @mindex mbsstr | |
| for multibyte locales, you need the function @code{mbsstr}. |