The parsing of "--index" is done in a callback, but it does
not handle an "unset" option. We don't necessarily expect
anyone to use this, but the current behavior is to treat it
exactly like "--index", which would probably be surprising.
Instead, let's just turn it into an OPT_BOOL, and handle it
after we're done parsing. This makes "--no-index" just work
(it cancels a previous "--index").
As a bonus, this makes the logic easier to follow. The old
code opened the index during the option parsing, leaving the
reader to wonder if there was some timing issue (there
isn't; none of the other options care that we've opened it).
And then if we found that "--prefix" had been given, we had
to rollback the index. Now we can simply avoid opening it in
the first place.
Note that it might make more sense for checkout-index to
complain when "--index --prefix=foo" is given (rather than
silently ignoring "--index"), but since it has been that way
since 415e96c ([PATCH] Implement git-checkout-cache -u to
update stat information in the cache., 2005-05-15), it's
safer to leave it as-is.
Signed-off-by: Jeff King <peff@xxxxxxxx>
---
I also reformatted the comment that violated our style
guidelines, but I am not sure if it is all that helpful. It
seems we also cancel "--index" with "--temp" or
"--stage=all", but I do not know why. I left the content
as-is, but if somebody knows enough to elaborate, it might
be worth doing.
builtin/checkout-index.c | 34 ++++++++++------------------------
1 file changed, 10 insertions(+), 24 deletions(-)
diff --git a/builtin/checkout-index.c b/builtin/checkout-index.c
index 43bedde..f8179a7 100644
--- a/builtin/checkout-index.c
+++ b/builtin/checkout-index.c
@@ -130,18 +130,6 @@ static const char * const builtin_checkout_index_usage[] = {
static struct lock_file lock_file;
-static int option_parse_u(const struct option *opt,
- const char *arg, int unset)
-{
- int *newfd = opt->value;
-
- state.refresh_cache = 1;
- state.istate = &the_index;
- if (*newfd < 0)
- *newfd = hold_locked_index(&lock_file, 1);
- return 0;
-}
-
static int option_parse_stage(const struct option *opt,
const char *arg, int unset)
{
@@ -166,6 +154,7 @@ int cmd_checkout_index(int argc, const char **argv, const char *prefix)
int read_from_stdin = 0;
int prefix_length;
int force = 0, quiet = 0, not_new = 0;
+ int index_opt = 0;
struct option builtin_checkout_index_options[] = {
OPT_BOOL('a', "all", &all,
N_("check out all files in the index")),
@@ -174,9 +163,8 @@ int cmd_checkout_index(int argc, const char **argv, const char *prefix)
N_("no warning for existing files and files not in index")),
OPT_BOOL('n', "no-create", ¬_new,
N_("don't checkout new files")),
- { OPTION_CALLBACK, 'u', "index", &newfd, NULL,
- N_("update stat information in the index file"),
- PARSE_OPT_NOARG, option_parse_u },
+ OPT_BOOL('u', "index", &index_opt,
+ N_("update stat information in the index file")),
OPT_BOOL('z', NULL, &nul_term_line,
N_("paths are separated with NUL character")),
OPT_BOOL(0, "stdin", &read_from_stdin,
@@ -211,15 +199,13 @@ int cmd_checkout_index(int argc, const char **argv, const char *prefix)
state.base_dir = "";
state.base_dir_len = strlen(state.base_dir);
- if (state.base_dir_len || to_tempfile) {
- /* when --prefix is specified we do not
- * want to update cache.
- */
- if (state.refresh_cache) {
- rollback_lock_file(&lock_file);
- newfd = -1;
- }
- state.refresh_cache = 0;
+ /*
+ * when --prefix is specified we do not want to update cache.
+ */
+ if (index_opt && !state.base_dir_len && !to_tempfile) {
+ state.refresh_cache = 1;
+ state.istate = &the_index;
+ newfd = hold_locked_index(&lock_file, 1);
}
/* Check out named files first */
--
2.7.0.489.g6faad84
--
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