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libbb: add a comment describing the way is_prefixed_with() works

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Signed-off-by: Bartosz Golaszewski <bartekgola@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Bartosz Golaszewski
2015-08-25 13:10:00 +02:00
committed by Denys Vlasenko
parent b432923e29
commit 0a4d0e8fbf
1 changed files with 5 additions and 0 deletions
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5
libbb/compare_string_array.c
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@@ -5,6 +5,11 @@
#include "libbb.h" #include "libbb.h"
/*
* Return NULL if string is not prefixed with key. Return pointer to the
* first character in string after the prefix key. If key is an empty string,
* return pointer to the beginning of string.
*/
char* FAST_FUNC is_prefixed_with(const char *string, const char *key) char* FAST_FUNC is_prefixed_with(const char *string, const char *key)
{ {
#if 0 /* Two passes over key - probably slower */ #if 0 /* Two passes over key - probably slower */