update cache for conflicting submodule entries

diff --git a/exec_cmd.c b/exec_cmd.c
index f234066defd637dc3c048ba3d9eb43f1ecbad446..408e4e55e1c58931444c772d35d23b505bf3e2ea 100644 (file)
--- a/exec_cmd.c
+++ b/exec_cmd.c
@@ -23,35 +23,10 @@ const char *system_path(const char *path)
        assert(argv0_path);
        assert(is_absolute_path(argv0_path));
 
-       if (!prefix) {
-               const char *strip[] = {
-                       GIT_EXEC_PATH,
-                       BINDIR,
-                       0
-               };
-               const char **s;
-
-               for (s = strip; *s; s++) {
-                       const char *sargv = argv0_path + strlen(argv0_path);
-                       const char *ss = *s + strlen(*s);
-                       while (argv0_path < sargv && *s < ss
-                               && (*sargv == *ss ||
-                                   (is_dir_sep(*sargv) && is_dir_sep(*ss)))) {
-                               sargv--;
-                               ss--;
-                       }
-                       if (*s == ss) {
-                               struct strbuf d = STRBUF_INIT;
-                               /* We also skip the trailing directory separator. */
-                               assert(sargv - argv0_path - 1 >= 0);
-                               strbuf_add(&d, argv0_path, sargv - argv0_path - 1);
-                               prefix = strbuf_detach(&d, NULL);
-                               break;
-                       }
-               }
-       }
-
-       if (!prefix) {
+       if (!prefix &&
+           !(prefix = strip_path_suffix(argv0_path, GIT_EXEC_PATH)) &&
+           !(prefix = strip_path_suffix(argv0_path, BINDIR)) &&
+           !(prefix = strip_path_suffix(argv0_path, "git"))) {
                prefix = PREFIX;
                fprintf(stderr, "RUNTIME_PREFIX requested, "
                                "but prefix computation failed.  "
@@ -86,6 +61,10 @@ const char *git_extract_argv0_path(const char *argv0)
 void git_set_argv_exec_path(const char *exec_path)
 {
        argv_exec_path = exec_path;
+       /*
+        * Propagate this setting to external programs.
+        */
+       setenv(EXEC_PATH_ENVIRONMENT, exec_path, 1);
 }