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-rw-r--r--git.c22
1 files changed, 18 insertions, 4 deletions
diff --git a/git.c b/git.c
index b6bf5ad5e..696a97edc 100644
--- a/git.c
+++ b/git.c
@@ -28,7 +28,7 @@ static void prepend_to_path(const char *dir, int len)
free(path);
}
-static int handle_options(const char*** argv, int* argc)
+static int handle_options(const char*** argv, int* argc, int* envchanged)
{
int handled = 0;
@@ -64,24 +64,34 @@ static int handle_options(const char*** argv, int* argc)
usage(git_usage_string);
}
setenv(GIT_DIR_ENVIRONMENT, (*argv)[1], 1);
+ if (envchanged)
+ *envchanged = 1;
(*argv)++;
(*argc)--;
handled++;
} else if (!prefixcmp(cmd, "--git-dir=")) {
setenv(GIT_DIR_ENVIRONMENT, cmd + 10, 1);
+ if (envchanged)
+ *envchanged = 1;
} else if (!strcmp(cmd, "--work-tree")) {
if (*argc < 2) {
fprintf(stderr, "No directory given for --work-tree.\n" );
usage(git_usage_string);
}
setenv(GIT_WORK_TREE_ENVIRONMENT, (*argv)[1], 1);
+ if (envchanged)
+ *envchanged = 1;
(*argv)++;
(*argc)--;
} else if (!prefixcmp(cmd, "--work-tree=")) {
setenv(GIT_WORK_TREE_ENVIRONMENT, cmd + 12, 1);
+ if (envchanged)
+ *envchanged = 1;
} else if (!strcmp(cmd, "--bare")) {
static char git_dir[PATH_MAX+1];
setenv(GIT_DIR_ENVIRONMENT, getcwd(git_dir, sizeof(git_dir)), 1);
+ if (envchanged)
+ *envchanged = 1;
} else {
fprintf(stderr, "Unknown option: %s\n", cmd);
usage(git_usage_string);
@@ -160,7 +170,7 @@ static int split_cmdline(char *cmdline, const char ***argv)
static int handle_alias(int *argcp, const char ***argv)
{
- int nongit = 0, ret = 0, saved_errno = errno;
+ int nongit = 0, envchanged = 0, ret = 0, saved_errno = errno;
const char *subdir;
int count, option_count;
const char** new_argv;
@@ -181,7 +191,11 @@ static int handle_alias(int *argcp, const char ***argv)
alias_string + 1, alias_command);
}
count = split_cmdline(alias_string, &new_argv);
- option_count = handle_options(&new_argv, &count);
+ option_count = handle_options(&new_argv, &count, &envchanged);
+ if (envchanged)
+ die("alias '%s' changes environment variables\n"
+ "You can use '!git' in the alias to do this.",
+ alias_command);
memmove(new_argv - option_count, new_argv,
count * sizeof(char *));
new_argv -= option_count;
@@ -402,7 +416,7 @@ int main(int argc, const char **argv)
/* Look for flags.. */
argv++;
argc--;
- handle_options(&argv, &argc);
+ handle_options(&argv, &argc, NULL);
if (argc > 0) {
if (!prefixcmp(argv[0], "--"))
argv[0] += 2;