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![Jeff King](/assets/img/avatar_default.png)
It's an easy mistake to add a repository inside another repository, like: git clone $url git add . The resulting entry is a gitlink, but there's no matching .gitmodules entry. Trying to use "submodule init" (or clone with --recursive) doesn't do anything useful. Prior to v2.13, such an entry caused git-submodule to barf entirely. In v2.13, the entry is considered "inactive" and quietly ignored. Either way, no clone of your repository can do anything useful with the gitlink without the user manually adding the submodule config. In most cases, the user probably meant to either add a real submodule, or they forgot to put the embedded repository in their .gitignore file. Let's issue a warning when we see this case. There are a few things to note: - the warning will go in the git-add porcelain; anybody wanting to do low-level manipulation of the index is welcome to create whatever funny states they want. - we detect the case by looking for a newly added gitlink; updates via "git add submodule" are perfectly reasonable, and this avoids us having to investigate .gitmodules entirely - there's a command-line option to suppress the warning. This is needed for git-submodule itself (which adds the entry before adding any submodule config), but also provides a mechanism for other scripts doing submodule-like things. We could make this a hard error instead of a warning. However, we do add lots of sub-repos in our test suite. It's not _wrong_ to do so. It just creates a state where users may be surprised. Pointing them in the right direction with a gentle hint is probably the best option. There is a config knob that can disable the (long) hint. But I intentionally omitted a config knob to disable the warning entirely. Whether the warning is sensible or not is generally about context, not about the user's preferences. If there's a tool or workflow that adds gitlinks without matching .gitmodules, it should probably be taught about the new command-line option, rather than blanket-disabling the warning. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
135 lines
4.1 KiB
C
135 lines
4.1 KiB
C
#include "cache.h"
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int advice_push_update_rejected = 1;
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int advice_push_non_ff_current = 1;
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int advice_push_non_ff_matching = 1;
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int advice_push_already_exists = 1;
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int advice_push_fetch_first = 1;
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int advice_push_needs_force = 1;
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int advice_status_hints = 1;
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int advice_status_u_option = 1;
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int advice_commit_before_merge = 1;
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int advice_resolve_conflict = 1;
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int advice_implicit_identity = 1;
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int advice_detached_head = 1;
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int advice_set_upstream_failure = 1;
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int advice_object_name_warning = 1;
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int advice_rm_hints = 1;
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int advice_add_embedded_repo = 1;
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static struct {
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const char *name;
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int *preference;
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} advice_config[] = {
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{ "pushupdaterejected", &advice_push_update_rejected },
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{ "pushnonffcurrent", &advice_push_non_ff_current },
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{ "pushnonffmatching", &advice_push_non_ff_matching },
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{ "pushalreadyexists", &advice_push_already_exists },
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{ "pushfetchfirst", &advice_push_fetch_first },
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{ "pushneedsforce", &advice_push_needs_force },
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{ "statushints", &advice_status_hints },
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{ "statusuoption", &advice_status_u_option },
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{ "commitbeforemerge", &advice_commit_before_merge },
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{ "resolveconflict", &advice_resolve_conflict },
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{ "implicitidentity", &advice_implicit_identity },
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{ "detachedhead", &advice_detached_head },
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{ "setupstreamfailure", &advice_set_upstream_failure },
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{ "objectnamewarning", &advice_object_name_warning },
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{ "rmhints", &advice_rm_hints },
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{ "addembeddedrepo", &advice_add_embedded_repo },
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/* make this an alias for backward compatibility */
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{ "pushnonfastforward", &advice_push_update_rejected }
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};
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void advise(const char *advice, ...)
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{
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struct strbuf buf = STRBUF_INIT;
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va_list params;
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const char *cp, *np;
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va_start(params, advice);
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strbuf_vaddf(&buf, advice, params);
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va_end(params);
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for (cp = buf.buf; *cp; cp = np) {
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np = strchrnul(cp, '\n');
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fprintf(stderr, _("hint: %.*s\n"), (int)(np - cp), cp);
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if (*np)
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np++;
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}
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strbuf_release(&buf);
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}
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int git_default_advice_config(const char *var, const char *value)
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{
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const char *k;
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int i;
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if (!skip_prefix(var, "advice.", &k))
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return 0;
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for (i = 0; i < ARRAY_SIZE(advice_config); i++) {
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if (strcmp(k, advice_config[i].name))
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continue;
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*advice_config[i].preference = git_config_bool(var, value);
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return 0;
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}
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return 0;
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}
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int error_resolve_conflict(const char *me)
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{
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if (!strcmp(me, "cherry-pick"))
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error(_("Cherry-picking is not possible because you have unmerged files."));
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else if (!strcmp(me, "commit"))
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error(_("Committing is not possible because you have unmerged files."));
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else if (!strcmp(me, "merge"))
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error(_("Merging is not possible because you have unmerged files."));
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else if (!strcmp(me, "pull"))
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error(_("Pulling is not possible because you have unmerged files."));
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else if (!strcmp(me, "revert"))
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error(_("Reverting is not possible because you have unmerged files."));
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else
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error(_("It is not possible to %s because you have unmerged files."),
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me);
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if (advice_resolve_conflict)
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/*
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* Message used both when 'git commit' fails and when
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* other commands doing a merge do.
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*/
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advise(_("Fix them up in the work tree, and then use 'git add/rm <file>'\n"
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"as appropriate to mark resolution and make a commit."));
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return -1;
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}
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void NORETURN die_resolve_conflict(const char *me)
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{
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error_resolve_conflict(me);
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die(_("Exiting because of an unresolved conflict."));
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}
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void NORETURN die_conclude_merge(void)
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{
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error(_("You have not concluded your merge (MERGE_HEAD exists)."));
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if (advice_resolve_conflict)
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advise(_("Please, commit your changes before merging."));
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die(_("Exiting because of unfinished merge."));
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}
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void detach_advice(const char *new_name)
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{
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const char *fmt =
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_("Note: checking out '%s'.\n\n"
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"You are in 'detached HEAD' state. You can look around, make experimental\n"
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"changes and commit them, and you can discard any commits you make in this\n"
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"state without impacting any branches by performing another checkout.\n\n"
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"If you want to create a new branch to retain commits you create, you may\n"
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"do so (now or later) by using -b with the checkout command again. Example:\n\n"
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" git checkout -b <new-branch-name>\n\n");
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fprintf(stderr, fmt, new_name);
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}
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