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Allow environment variables to be unset in the processes started by run_command

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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>
This commit is contained in:
Alex Riesen
2007-05-23 22:21:39 +02:00
committed by Junio C Hamano
parent ee4931486b
commit 3427b375b5
2 changed files with 11 additions and 2 deletions
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8
run-command.c
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@ -77,8 +77,12 @@ int start_command(struct child_process *cmd)
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);