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Merge branch 'ab/fetch-tags-noclobber'

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The rules used by "git push" and "git fetch" to determine if a ref
can or cannot be updated were inconsistent; specifically, fetching
to update existing tags were allowed even though tags are supposed
to be unmoving anchoring points.  "git fetch" was taught to forbid
updates to existing tags without the "--force" option.

* ab/fetch-tags-noclobber:
  fetch: stop clobbering existing tags without --force
  fetch: document local ref updates with/without --force
  push doc: correct lies about how push refspecs work
  push doc: move mention of "tag <tag>" later in the prose
  push doc: remove confusing mention of remote merger
  fetch tests: add a test for clobbering tag behavior
  push tests: use spaces in interpolated string
  push tests: make use of unused $1 in test description
  fetch: change "branch" to "reference" in --force -h output
This commit is contained in:
Junio C Hamano
2018-09-17 13:54:00 -07:00
parent 1c515bf7e2 0bc8d71b99
commit d39cab3989
7 changed files with 134 additions and 33 deletions
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20
builtin/fetch.c
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@ -115,7 +115,7 @@ static struct option builtin_fetch_options[] = {
N_("append to .git/FETCH_HEAD instead of overwriting")),
OPT_STRING(0, "upload-pack", &upload_pack, N_("path"),
N_("path to upload pack on remote end")),
OPT__FORCE(&force, N_("force overwrite of local branch"), 0),
OPT__FORCE(&force, N_("force overwrite of local reference"), 0),
OPT_BOOL('m', "multiple", &multiple,
N_("fetch from multiple remotes")),
OPT_SET_INT('t', "tags", &tags,
@ -668,12 +668,18 @@ static int update_local_ref(struct ref *ref,
if (!is_null_oid(&ref->old_oid) &&
starts_with(ref->name, "refs/tags/")) {
int r;
r = s_update_ref("updating tag", ref, 0);
format_display(display, r ? '!' : 't', _("[tag update]"),
r ? _("unable to update local ref") : NULL,
remote, pretty_ref, summary_width);
return r;
if (force || ref->force) {
int r;
r = s_update_ref("updating tag", ref, 0);
format_display(display, r ? '!' : 't', _("[tag update]"),
r ? _("unable to update local ref") : NULL,
remote, pretty_ref, summary_width);
return r;
} else {
format_display(display, '!', _("[rejected]"), _("would clobber existing tag"),
remote, pretty_ref, summary_width);
return 1;
}
}
current = lookup_commit_reference_gently(the_repository,