diff options
Diffstat (limited to 'builtin/merge.c')
| -rw-r--r-- | builtin/merge.c | 69 |
1 files changed, 30 insertions, 39 deletions
diff --git a/builtin/merge.c b/builtin/merge.c index bf2f2614f..6ec3126db 100644 --- a/builtin/merge.c +++ b/builtin/merge.c @@ -30,6 +30,7 @@ #include "fmt-merge-msg.h" #include "gpg-interface.h" #include "sequencer.h" +#include "string-list.h" #define DEFAULT_TWOHEAD (1<<0) #define DEFAULT_OCTOPUS (1<<1) @@ -64,6 +65,7 @@ static int option_renormalize; static int verbosity; static int allow_rerere_auto; static int abort_current_merge; +static int allow_unrelated_histories; static int show_progress = -1; static int default_to_upstream = 1; static const char *sign_commit; @@ -221,6 +223,8 @@ static struct option builtin_merge_options[] = { OPT__VERBOSITY(&verbosity), OPT_BOOL(0, "abort", &abort_current_merge, N_("abort the current in-progress merge")), + OPT_BOOL(0, "allow-unrelated-histories", &allow_unrelated_histories, + N_("allow merging unrelated histories")), OPT_SET_INT(0, "progress", &show_progress, N_("force progress reporting"), 1), { OPTION_STRING, 'S', "gpg-sign", &sign_commit, N_("key-id"), N_("GPG sign commit"), PARSE_OPT_OPTARG, NULL, (intptr_t) "" }, @@ -709,42 +713,17 @@ static int count_unmerged_entries(void) return ret; } -static void split_merge_strategies(const char *string, struct strategy **list, - int *nr, int *alloc) -{ - char *p, *q, *buf; - - if (!string) - return; - - buf = xstrdup(string); - q = buf; - for (;;) { - p = strchr(q, ' '); - if (!p) { - ALLOC_GROW(*list, *nr + 1, *alloc); - (*list)[(*nr)++].name = xstrdup(q); - free(buf); - return; - } else { - *p = '\0'; - ALLOC_GROW(*list, *nr + 1, *alloc); - (*list)[(*nr)++].name = xstrdup(q); - q = ++p; - } - } -} - static void add_strategies(const char *string, unsigned attr) { - struct strategy *list = NULL; - int list_alloc = 0, list_nr = 0, i; - - memset(&list, 0, sizeof(list)); - split_merge_strategies(string, &list, &list_nr, &list_alloc); - if (list) { - for (i = 0; i < list_nr; i++) - append_strategy(get_strategy(list[i].name)); + int i; + + if (string) { + struct string_list list = STRING_LIST_INIT_DUP; + struct string_list_item *item; + string_list_split(&list, string, ' ', -1); + for_each_string_list_item(item, &list) + append_strategy(get_strategy(item->string)); + string_list_clear(&list, 0); return; } for (i = 0; i < ARRAY_SIZE(all_strategy); i++) @@ -819,6 +798,14 @@ static int merge_trivial(struct commit *head, struct commit_list *remoteheads) { unsigned char result_tree[20], result_commit[20]; struct commit_list *parents, **pptr = &parents; + static struct lock_file lock; + + hold_locked_index(&lock, 1); + refresh_cache(REFRESH_QUIET); + if (active_cache_changed && + write_locked_index(&the_index, &lock, COMMIT_LOCK)) + return error(_("Unable to write index.")); + rollback_lock_file(&lock); write_tree_trivial(result_tree); printf(_("Wonderful.\n")); @@ -1165,7 +1152,7 @@ int cmd_merge(int argc, const char **argv, const char *prefix) struct commit *head_commit; struct strbuf buf = STRBUF_INIT; const char *head_arg; - int flag, i, ret = 0, head_subsumed; + int i, ret = 0, head_subsumed; int best_cnt = -1, merge_was_ok = 0, automerge_was_ok = 0; struct commit_list *common = NULL; const char *best_strategy = NULL, *wt_strategy = NULL; @@ -1179,7 +1166,7 @@ int cmd_merge(int argc, const char **argv, const char *prefix) * Check if we are _not_ on a detached HEAD, i.e. if there is a * current branch. */ - branch = branch_to_free = resolve_refdup("HEAD", 0, head_sha1, &flag); + branch = branch_to_free = resolve_refdup("HEAD", 0, head_sha1, NULL); if (branch && starts_with(branch, "refs/heads/")) branch += 11; if (!branch || is_null_sha1(head_sha1)) @@ -1187,6 +1174,7 @@ int cmd_merge(int argc, const char **argv, const char *prefix) else head_commit = lookup_commit_or_die(head_sha1, "HEAD"); + init_diff_ui_defaults(); git_config(git_merge_config, NULL); if (branch_mergeoptions) @@ -1397,9 +1385,12 @@ int cmd_merge(int argc, const char **argv, const char *prefix) update_ref("updating ORIG_HEAD", "ORIG_HEAD", head_commit->object.oid.hash, NULL, 0, UPDATE_REFS_DIE_ON_ERR); - if (remoteheads && !common) - ; /* No common ancestors found. We need a real merge. */ - else if (!remoteheads || + if (remoteheads && !common) { + /* No common ancestors found. */ + if (!allow_unrelated_histories) + die(_("refusing to merge unrelated histories")); + /* otherwise, we need a real merge. */ + } else if (!remoteheads || (!remoteheads->next && !common->next && common->item == remoteheads->item)) { /* |