diff options
author | Junio C Hamano <gitster@pobox.com> | 2013-07-15 21:28:34 +0400 |
---|---|---|
committer | Junio C Hamano <gitster@pobox.com> | 2013-07-15 21:28:34 +0400 |
commit | 9678ee7ba30a76b0b5c613126e659dcb1a206091 (patch) | |
tree | 84f70d381a8af68cad07a3242bfb2673623aadcf /builtin/merge.c | |
parent | dd28abca6ab1b8c4b55fdcadeaae092fc897c063 (diff) | |
parent | a54841e96b78203598dea6b31b9618f40f107e7b (diff) |
Merge branch 'mv/merge-ff-tristate'
The configuration variable "merge.ff" was cleary a tri-state to
choose one from "favor fast-forward when possible", "always create
a merge even when the history could fast-forward" and "do not
create any merge, only update when the history fast-forwards", but
the command line parser did not implement the usual convention of
"last one wins, and command line overrides the configuration"
correctly.
* mv/merge-ff-tristate:
merge: handle --ff/--no-ff/--ff-only as a tri-state option
Diffstat (limited to 'builtin/merge.c')
-rw-r--r-- | builtin/merge.c | 55 |
1 files changed, 33 insertions, 22 deletions
diff --git a/builtin/merge.c b/builtin/merge.c index bad4536a87..9505e7e426 100644 --- a/builtin/merge.c +++ b/builtin/merge.c @@ -47,8 +47,8 @@ static const char * const builtin_merge_usage[] = { }; static int show_diffstat = 1, shortlog_len = -1, squash; -static int option_commit = 1, allow_fast_forward = 1; -static int fast_forward_only, option_edit = -1; +static int option_commit = 1; +static int option_edit = -1; static int allow_trivial = 1, have_message, verify_signatures; static int overwrite_ignore = 1; static struct strbuf merge_msg = STRBUF_INIT; @@ -76,6 +76,14 @@ static struct strategy all_strategy[] = { static const char *pull_twohead, *pull_octopus; +enum ff_type { + FF_NO, + FF_ALLOW, + FF_ONLY +}; + +static enum ff_type fast_forward = FF_ALLOW; + static int option_parse_message(const struct option *opt, const char *arg, int unset) { @@ -178,6 +186,13 @@ static int option_parse_n(const struct option *opt, return 0; } +static int option_parse_ff_only(const struct option *opt, + const char *arg, int unset) +{ + fast_forward = FF_ONLY; + return 0; +} + static struct option builtin_merge_options[] = { { OPTION_CALLBACK, 'n', NULL, NULL, NULL, N_("do not show a diffstat at the end of the merge"), @@ -194,10 +209,10 @@ static struct option builtin_merge_options[] = { N_("perform a commit if the merge succeeds (default)")), OPT_BOOL('e', "edit", &option_edit, N_("edit message before committing")), - OPT_BOOLEAN(0, "ff", &allow_fast_forward, - N_("allow fast-forward (default)")), - OPT_BOOLEAN(0, "ff-only", &fast_forward_only, - N_("abort if fast-forward is not possible")), + OPT_SET_INT(0, "ff", &fast_forward, N_("allow fast-forward (default)"), FF_ALLOW), + { OPTION_CALLBACK, 0, "ff-only", NULL, NULL, + N_("abort if fast-forward is not possible"), + PARSE_OPT_NOARG | PARSE_OPT_NONEG, option_parse_ff_only }, OPT_RERERE_AUTOUPDATE(&allow_rerere_auto), OPT_BOOL(0, "verify-signatures", &verify_signatures, N_("Verify that the named commit has a valid GPG signature")), @@ -581,10 +596,9 @@ static int git_merge_config(const char *k, const char *v, void *cb) else if (!strcmp(k, "merge.ff")) { int boolval = git_config_maybe_bool(k, v); if (0 <= boolval) { - allow_fast_forward = boolval; + fast_forward = boolval ? FF_ALLOW : FF_NO; } else if (v && !strcmp(v, "only")) { - allow_fast_forward = 1; - fast_forward_only = 1; + fast_forward = FF_ONLY; } /* do not barf on values from future versions of git */ return 0; } else if (!strcmp(k, "merge.defaulttoupstream")) { @@ -863,7 +877,7 @@ static int finish_automerge(struct commit *head, free_commit_list(common); parents = remoteheads; - if (!head_subsumed || !allow_fast_forward) + if (!head_subsumed || fast_forward == FF_NO) commit_list_insert(head, &parents); strbuf_addch(&merge_msg, '\n'); prepare_to_commit(remoteheads); @@ -1008,7 +1022,7 @@ static void write_merge_state(struct commit_list *remoteheads) if (fd < 0) die_errno(_("Could not open '%s' for writing"), filename); strbuf_reset(&buf); - if (!allow_fast_forward) + if (fast_forward == FF_NO) strbuf_addf(&buf, "no-ff"); if (write_in_full(fd, buf.buf, buf.len) != buf.len) die_errno(_("Could not write to '%s'"), filename); @@ -1157,14 +1171,11 @@ int cmd_merge(int argc, const char **argv, const char *prefix) show_diffstat = 0; if (squash) { - if (!allow_fast_forward) + if (fast_forward == FF_NO) die(_("You cannot combine --squash with --no-ff.")); option_commit = 0; } - if (!allow_fast_forward && fast_forward_only) - die(_("You cannot combine --no-ff with --ff-only.")); - if (!abort_current_merge) { if (!argc) { if (default_to_upstream) @@ -1206,7 +1217,7 @@ int cmd_merge(int argc, const char **argv, const char *prefix) "empty head")); if (squash) die(_("Squash commit into empty head not supported yet")); - if (!allow_fast_forward) + if (fast_forward == FF_NO) die(_("Non-fast-forward commit does not make sense into " "an empty head")); remoteheads = collect_parents(head_commit, &head_subsumed, argc, argv); @@ -1294,11 +1305,11 @@ int cmd_merge(int argc, const char **argv, const char *prefix) sha1_to_hex(commit->object.sha1)); setenv(buf.buf, merge_remote_util(commit)->name, 1); strbuf_reset(&buf); - if (!fast_forward_only && + if (fast_forward != FF_ONLY && merge_remote_util(commit) && merge_remote_util(commit)->obj && merge_remote_util(commit)->obj->type == OBJ_TAG) - allow_fast_forward = 0; + fast_forward = FF_NO; } if (option_edit < 0) @@ -1315,7 +1326,7 @@ int cmd_merge(int argc, const char **argv, const char *prefix) for (i = 0; i < use_strategies_nr; i++) { if (use_strategies[i]->attr & NO_FAST_FORWARD) - allow_fast_forward = 0; + fast_forward = FF_NO; if (use_strategies[i]->attr & NO_TRIVIAL) allow_trivial = 0; } @@ -1345,7 +1356,7 @@ int cmd_merge(int argc, const char **argv, const char *prefix) */ finish_up_to_date("Already up-to-date."); goto done; - } else if (allow_fast_forward && !remoteheads->next && + } else if (fast_forward != FF_NO && !remoteheads->next && !common->next && !hashcmp(common->item->object.sha1, head_commit->object.sha1)) { /* Again the most common case of merging one remote. */ @@ -1392,7 +1403,7 @@ int cmd_merge(int argc, const char **argv, const char *prefix) * only one common. */ refresh_cache(REFRESH_QUIET); - if (allow_trivial && !fast_forward_only) { + if (allow_trivial && fast_forward != FF_ONLY) { /* See if it is really trivial. */ git_committer_info(IDENT_STRICT); printf(_("Trying really trivial in-index merge...\n")); @@ -1433,7 +1444,7 @@ int cmd_merge(int argc, const char **argv, const char *prefix) } } - if (fast_forward_only) + if (fast_forward == FF_ONLY) die(_("Not possible to fast-forward, aborting.")); /* We are going to make a new commit. */ |