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reset: introduce --[no-]refresh option to --mixed

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Add a new --[no-]refresh option that is intended to explicitly determine
whether a mixed reset should end in an index refresh.

Starting at 9ac8125d1a (reset: don't compute unstaged changes after reset
when --quiet, 2018-10-23), using the '--quiet' option results in skipping
the call to 'refresh_index(...)' at the end of a mixed reset with the goal
of improving performance. However, by coupling behavior that modifies the
index with the option that silences logs, there is no way for users to have
one without the other (i.e., silenced logs with a refreshed index) without
incurring the overhead of a separate call to 'git update-index --refresh'.
Furthermore, there is minimal user-facing documentation indicating that
--quiet skips the index refresh, potentially leading to unexpected issues
executing commands after 'git reset --quiet' that do not themselves refresh
the index (e.g., internals of 'git stash', 'git read-tree').

To mitigate these issues, '--[no-]refresh' and 'reset.refresh' are
introduced to provide a dedicated mechanism for refreshing the index. When
either is set, '--quiet' and 'reset.quiet' revert to controlling only
whether logs are silenced and do not affect index refresh.

Helped-by: Derrick Stolee <derrickstolee@github.com>
Helped-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Victoria Dye <vdye@github.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Victoria Dye
2022-03-15 01:49:39 +00:00
committed by Junio C Hamano
parent e86ec71d20
commit fd56fba97f
3 changed files with 87 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
builtin/reset.c
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@ -392,6 +392,7 @@ static int git_reset_config(const char *var, const char *value, void *cb)
int cmd_reset(int argc, const char **argv, const char *prefix)
{
int reset_type = NONE, update_ref_status = 0, quiet = 0;
int refresh = -1;
int patch_mode = 0, pathspec_file_nul = 0, unborn;
const char *rev, *pathspec_from_file = NULL;
struct object_id oid;
@ -399,6 +400,8 @@ int cmd_reset(int argc, const char **argv, const char *prefix)
int intent_to_add = 0;
const struct option options[] = {
OPT__QUIET(&quiet, N_("be quiet, only report errors")),
OPT_BOOL(0, "refresh", &refresh,
N_("skip refreshing the index after reset")),
OPT_SET_INT(0, "mixed", &reset_type,
N_("reset HEAD and index"), MIXED),
OPT_SET_INT(0, "soft", &reset_type, N_("reset only HEAD"), SOFT),
@ -421,11 +424,19 @@ int cmd_reset(int argc, const char **argv, const char *prefix)
git_config(git_reset_config, NULL);
git_config_get_bool("reset.quiet", &quiet);
git_config_get_bool("reset.refresh", &refresh);
argc = parse_options(argc, argv, prefix, options, git_reset_usage,
PARSE_OPT_KEEP_DASHDASH);
parse_args(&pathspec, argv, prefix, patch_mode, &rev);
/*
* If refresh is completely unspecified (either by config or by command
* line option), decide based on 'quiet'.
*/
if (refresh < 0)
refresh = !quiet;
if (pathspec_from_file) {
if (patch_mode)
die(_("options '%s' and '%s' cannot be used together"), "--pathspec-from-file", "--patch");
@ -517,7 +528,7 @@ int cmd_reset(int argc, const char **argv, const char *prefix)
if (read_from_tree(&pathspec, &oid, intent_to_add))
return 1;
the_index.updated_skipworktree = 1;
if (!quiet && get_git_work_tree()) {
if (refresh && get_git_work_tree()) {
uint64_t t_begin, t_delta_in_ms;
t_begin = getnanotime();