git

1
#include "../git-compat-util.h"
2

3
int gitunsetenv(const char *name)
4
{
5
#if !defined(__MINGW32__)
6
     extern char **environ;
7
#endif
8
     int src, dst;
9
     size_t nmln;
10

11
     nmln = strlen(name);
12

13
     for (src = dst = 0; environ[src]; ++src) {
14
	  size_t enln;
15
	  enln = strlen(environ[src]);
16
	  if (enln > nmln) {
17
               /* might match, and can test for '=' safely */
18
	       if (0 == strncmp (environ[src], name, nmln)
19
		   && '=' == environ[src][nmln])
20
		    /* matches, so skip */
21
		    continue;
22
	  }
23
	  environ[dst] = environ[src];
24
	  ++dst;
25
     }
26
     environ[dst] = NULL;
27

28
     return 0;
29
}
30