Allow environment variables to be unset in the processes started by run_command
To unset a variable, just specify its name, without "=". For example:
const char *env[] = {"GIT_DIR=.git", "PWD", NULL};
const char *argv[] = {"git-ls-files", "-s", NULL};
int err = run_command_v_opt_cd_env(argv, RUN_GIT_CMD, ".", env);
The PWD will be unset before executing git-ls-files.
Signed-off-by: Alex Riesen <raa.lkml@gmail.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>
diff --git a/run-command.c b/run-command.c
index 4ee4bdf..7e779d3 100644
--- a/run-command.c
+++ b/run-command.c
@@ -77,8 +77,12 @@
die("exec %s: cd to %s failed (%s)", cmd->argv[0],
cmd->dir, strerror(errno));
if (cmd->env) {
- for (; *cmd->env; cmd->env++)
- putenv((char*)*cmd->env);
+ for (; *cmd->env; cmd->env++) {
+ if (strchr(*cmd->env, '='))
+ putenv((char*)*cmd->env);
+ else
+ unsetenv(*cmd->env);
+ }
}
if (cmd->git_cmd) {
execv_git_cmd(cmd->argv);
