From d4e98b581b5b3b70ca58cb6677ec02bee4ae7007 Mon Sep 17 00:00:00 2001 From: Jens Lehmann Date: Sat, 14 May 2011 18:26:58 +0200 Subject: Submodules: Don't parse .gitmodules when it contains, merge conflicts Commands like "git status", "git diff" and "git fetch" would fail when the .gitmodules file contained merge conflicts because the config parser would call die() when hitting the conflict markers: "fatal: bad config file line in /.gitmodules" While this behavior was on the safe side, it is really unhelpful to the user to have commands like status and diff fail, as these are needed to find out what's going on. And the error message is only mildly helpful, as it points to the right file but doesn't mention that it is unmerged. Users of git gui were not shown any conflicts at all when this happened. Improve the situation by checking if the index records .gitmodules as unmerged. When that is the case we can't make any assumptions about the configuration to be found there after the merge conflict is resolved by the user, so assume that all recursion is disabled unless .git/config or the global config say otherwise. As soon as the merge conflict is resolved and the .gitmodules file has been staged subsequent commands again honor any configuration done there. Signed-off-by: Jens Lehmann Signed-off-by: Junio C Hamano --- submodule.c | 31 +++++++++++++++++++++++++++++-- t/t7506-status-submodule.sh | 6 +++--- 2 files changed, 32 insertions(+), 5 deletions(-) diff --git a/submodule.c b/submodule.c index 5294cef641..b6dec70bd1 100644 --- a/submodule.c +++ b/submodule.c @@ -14,6 +14,15 @@ static struct string_list config_fetch_recurse_submodules_for_name; static struct string_list config_ignore_for_name; static int config_fetch_recurse_submodules = RECURSE_SUBMODULES_ON_DEMAND; static struct string_list changed_submodule_paths; +/* + * The following flag is set if the .gitmodules file is unmerged. We then + * disable recursion for all submodules where .git/config doesn't have a + * matching config entry because we can't guess what might be configured in + * .gitmodules unless the user resolves the conflict. When a command line + * option is given (which always overrides configuration) this flag will be + * ignored. + */ +static int gitmodules_is_unmerged; static int add_submodule_odb(const char *path) { @@ -63,6 +72,8 @@ void set_diffopt_flags_from_submodule_config(struct diff_options *diffopt, ignore_option = unsorted_string_list_lookup(&config_ignore_for_name, path_option->util); if (ignore_option) handle_ignore_submodules_arg(diffopt, ignore_option->util); + else if (gitmodules_is_unmerged) + DIFF_OPT_SET(diffopt, IGNORE_SUBMODULES); } } @@ -82,9 +93,24 @@ void gitmodules_config(void) const char *work_tree = get_git_work_tree(); if (work_tree) { struct strbuf gitmodules_path = STRBUF_INIT; + int pos; strbuf_addstr(&gitmodules_path, work_tree); strbuf_addstr(&gitmodules_path, "/.gitmodules"); - git_config_from_file(submodule_config, gitmodules_path.buf, NULL); + if (read_cache() < 0) + die("index file corrupt"); + pos = cache_name_pos(".gitmodules", 11); + if (pos < 0) { /* .gitmodules not found or isn't merged */ + pos = -1 - pos; + if (active_nr > pos) { /* there is a .gitmodules */ + const struct cache_entry *ce = active_cache[pos]; + if (ce_namelen(ce) == 11 && + !memcmp(ce->name, ".gitmodules", 11)) + gitmodules_is_unmerged = 1; + } + } + + if (!gitmodules_is_unmerged) + git_config_from_file(submodule_config, gitmodules_path.buf, NULL); strbuf_release(&gitmodules_path); } } @@ -434,7 +460,8 @@ int fetch_populated_submodules(int num_options, const char **options, default_argv = "on-demand"; } } else { - if (config_fetch_recurse_submodules == RECURSE_SUBMODULES_OFF) + if ((config_fetch_recurse_submodules == RECURSE_SUBMODULES_OFF) || + gitmodules_is_unmerged) continue; if (config_fetch_recurse_submodules == RECURSE_SUBMODULES_ON_DEMAND) { if (!unsorted_string_list_lookup(&changed_submodule_paths, ce->name)) diff --git a/t/t7506-status-submodule.sh b/t/t7506-status-submodule.sh index c2c53441ed..e80e6bb59c 100755 --- a/t/t7506-status-submodule.sh +++ b/t/t7506-status-submodule.sh @@ -196,7 +196,7 @@ AA .gitmodules A sub1 EOF -test_expect_failure 'status with merge conflict in .gitmodules' ' +test_expect_success 'status with merge conflict in .gitmodules' ' git clone . super && test_create_repo_with_commit sub1 && test_tick && @@ -255,7 +255,7 @@ index badaa4c,44f999a..0000000 ++>>>>>>> add_sub1 EOF -test_expect_failure 'diff with merge conflict in .gitmodules' ' +test_expect_success 'diff with merge conflict in .gitmodules' ' ( cd super && git diff >../diff_actual 2>&1 @@ -263,7 +263,7 @@ test_expect_failure 'diff with merge conflict in .gitmodules' ' test_cmp diff_actual diff_expect ' -test_expect_failure 'diff --submodule with merge conflict in .gitmodules' ' +test_expect_success 'diff --submodule with merge conflict in .gitmodules' ' ( cd super && git diff --submodule >../diff_submodule_actual 2>&1 -- cgit v1.2.3