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| author | Björn Gustavsson <bgustavsson@gmail.com> | 2009-10-29 23:08:31 +0100 |
|---|---|---|
| committer | Junio C Hamano <gitster@pobox.com> | 2009-10-30 16:02:26 -0700 |
| commit | 134748353b2a71a34f899c9b1326ccf7ae082412 (patch) | |
| tree | aecf089b81630334a9306a734af1c126195e56f2 /builtin-merge.c | |
| parent | cd0f8e6d63d3e2744d7d3b2329238be7d064a8ea (diff) | |
| download | git-134748353b2a71a34f899c9b1326ccf7ae082412.tar.gz git-134748353b2a71a34f899c9b1326ccf7ae082412.tar.xz | |
Teach 'git merge' and 'git pull' the option --ff-only
For convenience in scripts and aliases, add the option
--ff-only to only allow fast-forwards (and up-to-date,
despite the name).
Disallow combining --ff-only and --no-ff, since they
flatly contradict each other.
Allow all other options to be combined with --ff-only
(i.e. do not add any code to handle them specially),
including the following options:
* --strategy (one or more): As long as the chosen merge
strategy results in up-to-date or fast-forward, the
command will succeed.
* --squash: I cannot imagine why anyone would want to
squash commits only if fast-forward is possible, but I
also see no reason why it should not be allowed.
* --message: The message will always be ignored, but I see
no need to explicitly disallow providing a redundant message.
Acknowledgements: I did look at Yuval Kogman's earlier
patch (107768 in gmane), mainly as shortcut to find my
way in the code, but I did not copy anything directly.
Signed-off-by: Björn Gustavsson <bgustavsson@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'builtin-merge.c')
| -rw-r--r-- | builtin-merge.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/builtin-merge.c b/builtin-merge.c index b6b84286b..5e8c4b5e4 100644 --- a/builtin-merge.c +++ b/builtin-merge.c @@ -43,6 +43,7 @@ static const char * const builtin_merge_usage[] = { static int show_diffstat = 1, option_log, squash; static int option_commit = 1, allow_fast_forward = 1; +static int fast_forward_only; static int allow_trivial = 1, have_message; static struct strbuf merge_msg; static struct commit_list *remoteheads; @@ -167,6 +168,8 @@ static struct option builtin_merge_options[] = { "perform a commit if the merge succeeds (default)"), OPT_BOOLEAN(0, "ff", &allow_fast_forward, "allow fast forward (default)"), + OPT_BOOLEAN(0, "ff-only", &fast_forward_only, + "abort if fast forward is not possible"), OPT_CALLBACK('s', "strategy", &use_strategies, "strategy", "merge strategy to use", option_parse_strategy), OPT_CALLBACK('m', "message", &merge_msg, "message", @@ -874,6 +877,9 @@ int cmd_merge(int argc, const char **argv, const char *prefix) option_commit = 0; } + if (!allow_fast_forward && fast_forward_only) + die("You cannot combine --no-ff with --ff-only."); + if (!argc) usage_with_options(builtin_merge_usage, builtin_merge_options); @@ -1040,7 +1046,7 @@ int cmd_merge(int argc, const char **argv, const char *prefix) * only one common. */ refresh_cache(REFRESH_QUIET); - if (allow_trivial) { + if (allow_trivial && !fast_forward_only) { /* See if it is really trivial. */ git_committer_info(IDENT_ERROR_ON_NO_NAME); printf("Trying really trivial in-index merge...\n"); @@ -1079,6 +1085,9 @@ int cmd_merge(int argc, const char **argv, const char *prefix) } } + if (fast_forward_only) + die("Not possible to fast forward, aborting."); + /* We are going to make a new commit. */ git_committer_info(IDENT_ERROR_ON_NO_NAME); |