git_exec_path, execv_git_cmd: ignore empty environment variables
Ignoring empty environment variables is good common practice.
Ignoring --exec-path with empty argument won't harm, too:
if user means current directory, there is a "--exec-path=."
Signed-off-by: Dmitry V. Levin <ldv@altlinux.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
diff --git a/exec_cmd.c b/exec_cmd.c
index 12eb364..c1539d1 100644
--- a/exec_cmd.c
+++ b/exec_cmd.c
@@ -21,7 +21,7 @@
return current_exec_path;
env = getenv("GIT_EXEC_PATH");
- if (env) {
+ if (env && *env) {
return env;
}
@@ -43,7 +43,7 @@
const char *exec_dir = paths[i];
const char *tmp;
- if (!exec_dir) continue;
+ if (!exec_dir || !*exec_dir) continue;
if (*exec_dir != '/') {
if (!getcwd(git_command, sizeof(git_command))) {
