diff options
| -rw-r--r-- | Documentation/git-cherry-pick.txt | 32 | ||||
| -rw-r--r-- | Documentation/git-revert.txt | 10 | ||||
| -rw-r--r-- | builtin/merge.c | 6 | ||||
| -rw-r--r-- | builtin/revert.c | 29 | ||||
| -rwxr-xr-x | contrib/examples/git-revert.sh | 13 | ||||
| -rw-r--r-- | merge-recursive.h | 4 | ||||
| -rwxr-xr-x | t/t3032-merge-recursive-options.sh | 14 |
7 files changed, 97 insertions, 11 deletions
diff --git a/Documentation/git-cherry-pick.txt b/Documentation/git-cherry-pick.txt index 73008705eb..749d68a72b 100644 --- a/Documentation/git-cherry-pick.txt +++ b/Documentation/git-cherry-pick.txt @@ -79,6 +79,16 @@ effect to your index in a row. cherry-pick'ed commit, then a fast forward to this commit will be performed. +--strategy=<strategy>:: + Use the given merge strategy. Should only be used once. + See the MERGE STRATEGIES section in linkgit:git-merge[1] + for details. + +-X<option>:: +--strategy-option=<option>:: + Pass the merge strategy-specific option through to the + merge strategy. See linkgit:git-merge[1] for details. + EXAMPLES -------- git cherry-pick master:: @@ -120,6 +130,28 @@ git rev-list --reverse master \-- README | git cherry-pick -n --stdin:: so the result can be inspected and made into a single new commit if suitable. +The following sequence attempts to backport a patch, bails out because +the code the patch applies to has changed too much, and then tries +again, this time exercising more care about matching up context lines. + +------------ +$ git cherry-pick topic^ <1> +$ git diff <2> +$ git reset --merge ORIG_HEAD <3> +$ git cherry-pick -Xpatience topic^ <4> +------------ +<1> apply the change that would be shown by `git show topic^`. +In this example, the patch does not apply cleanly, so +information about the conflict is written to the index and +working tree and no new commit results. +<2> summarize changes to be reconciled +<3> cancel the cherry-pick. In other words, return to the +pre-cherry-pick state, preserving any local modifications you had in +the working tree. +<4> try to apply the change introduced by `topic^` again, +spending extra time to avoid mistakes based on incorrectly matching +context lines. + Author ------ Written by Junio C Hamano <gitster@pobox.com> diff --git a/Documentation/git-revert.txt b/Documentation/git-revert.txt index 752fc88e76..45be851750 100644 --- a/Documentation/git-revert.txt +++ b/Documentation/git-revert.txt @@ -80,6 +80,16 @@ effect to your index in a row. --signoff:: Add Signed-off-by line at the end of the commit message. +--strategy=<strategy>:: + Use the given merge strategy. Should only be used once. + See the MERGE STRATEGIES section in linkgit:git-merge[1] + for details. + +-X<option>:: +--strategy-option=<option>:: + Pass the merge strategy-specific option through to the + merge strategy. See linkgit:git-merge[1] for details. + EXAMPLES -------- git revert HEAD~3:: diff --git a/builtin/merge.c b/builtin/merge.c index 42fff387e6..9403747b6a 100644 --- a/builtin/merge.c +++ b/builtin/merge.c @@ -582,7 +582,8 @@ static void write_tree_trivial(unsigned char *sha1) die("git write-tree failed to write a tree"); } -int try_merge_command(const char *strategy, struct commit_list *common, +int try_merge_command(const char *strategy, size_t xopts_nr, + const char **xopts, struct commit_list *common, const char *head_arg, struct commit_list *remotes) { const char **args; @@ -680,7 +681,8 @@ static int try_merge_strategy(const char *strategy, struct commit_list *common, rollback_lock_file(lock); return clean ? 0 : 1; } else { - return try_merge_command(strategy, common, head_arg, remoteheads); + return try_merge_command(strategy, xopts_nr, xopts, + common, head_arg, remoteheads); } } diff --git a/builtin/revert.c b/builtin/revert.c index bb6e9e83b7..dc1b702edc 100644 --- a/builtin/revert.c +++ b/builtin/revert.c @@ -44,7 +44,11 @@ static const char **commit_argv; static int allow_rerere_auto; static const char *me; + +/* Merge strategy. */ static const char *strategy; +static const char **xopts; +static size_t xopts_nr, xopts_alloc; #define GIT_REFLOG_ACTION "GIT_REFLOG_ACTION" @@ -55,6 +59,17 @@ static const char * const *revert_or_cherry_pick_usage(void) return action == REVERT ? revert_usage : cherry_pick_usage; } +static int option_parse_x(const struct option *opt, + const char *arg, int unset) +{ + if (unset) + return 0; + + ALLOC_GROW(xopts, xopts_nr + 1, xopts_alloc); + xopts[xopts_nr++] = xstrdup(arg); + return 0; +} + static void parse_args(int argc, const char **argv) { const char * const * usage_str = revert_or_cherry_pick_usage(); @@ -67,6 +82,8 @@ static void parse_args(int argc, const char **argv) OPT_INTEGER('m', "mainline", &mainline, "parent number"), OPT_RERERE_AUTOUPDATE(&allow_rerere_auto), OPT_STRING(0, "strategy", &strategy, "strategy", "merge strategy"), + OPT_CALLBACK('X', "strategy-option", &xopts, "option", + "option for merge strategy", option_parse_x), OPT_END(), OPT_END(), OPT_END(), @@ -311,18 +328,13 @@ static int do_recursive_merge(struct commit *base, struct commit *next, struct merge_options o; struct tree *result, *next_tree, *base_tree, *head_tree; int clean, index_fd; + const char **xopt; static struct lock_file index_lock; index_fd = hold_locked_index(&index_lock, 1); read_cache(); - /* - * NEEDSWORK: cherry-picking between branches with - * different end-of-line normalization is a pain; - * plumb in an option to set o.renormalize? - * (or better: arbitrary -X options) - */ init_merge_options(&o); o.ancestor = base ? base_label : "(empty tree)"; o.branch1 = "HEAD"; @@ -332,6 +344,9 @@ static int do_recursive_merge(struct commit *base, struct commit *next, next_tree = next ? next->tree : empty_tree(); base_tree = base ? base->tree : empty_tree(); + for (xopt = xopts; xopt != xopts + xopts_nr; xopt++) + parse_merge_opt(&o, *xopt); + clean = merge_trees(&o, head_tree, next_tree, base_tree, &result); @@ -503,7 +518,7 @@ static int do_pick_commit(void) commit_list_insert(base, &common); commit_list_insert(next, &remotes); - res = try_merge_command(strategy, common, + res = try_merge_command(strategy, xopts_nr, xopts, common, sha1_to_hex(head), remotes); free_commit_list(common); free_commit_list(remotes); diff --git a/contrib/examples/git-revert.sh b/contrib/examples/git-revert.sh index 60a05a8b97..6bf155cbdb 100755 --- a/contrib/examples/git-revert.sh +++ b/contrib/examples/git-revert.sh @@ -26,6 +26,7 @@ require_work_tree cd_to_toplevel no_commit= +xopt= while case "$#" in 0) break ;; esac do case "$1" in @@ -44,6 +45,16 @@ do -x|--i-really-want-to-expose-my-private-commit-object-name) replay= ;; + -X?*) + xopt="$xopt$(git rev-parse --sq-quote "--${1#-X}")" + ;; + --strategy-option=*) + xopt="$xopt$(git rev-parse --sq-quote "--${1#--strategy-option=}")" + ;; + -X|--strategy-option) + shift + xopt="$xopt$(git rev-parse --sq-quote "--$1")" + ;; -*) usage ;; @@ -159,7 +170,7 @@ export GITHEAD_$head GITHEAD_$next # and $prev on top of us (when reverting), or the change between # $prev and $commit on top of us (when cherry-picking or replaying). -git-merge-recursive $base -- $head $next && +eval "git merge-recursive $xopt $base -- $head $next" && result=$(git-write-tree 2>/dev/null) || { mv -f .msg "$GIT_DIR/MERGE_MSG" { diff --git a/merge-recursive.h b/merge-recursive.h index c8135b0ec7..981ed6ac94 100644 --- a/merge-recursive.h +++ b/merge-recursive.h @@ -57,6 +57,8 @@ struct tree *write_tree_from_memory(struct merge_options *o); int parse_merge_opt(struct merge_options *out, const char *s); /* builtin/merge.c */ -int try_merge_command(const char *strategy, struct commit_list *common, const char *head_arg, struct commit_list *remotes); +int try_merge_command(const char *strategy, size_t xopts_nr, + const char **xopts, struct commit_list *common, + const char *head_arg, struct commit_list *remotes); #endif diff --git a/t/t3032-merge-recursive-options.sh b/t/t3032-merge-recursive-options.sh index 2293797553..796f616abf 100755 --- a/t/t3032-merge-recursive-options.sh +++ b/t/t3032-merge-recursive-options.sh @@ -107,6 +107,20 @@ test_expect_success '--ignore-space-change makes merge succeed' ' git merge-recursive --ignore-space-change HEAD^ -- HEAD remote ' +test_expect_success 'naive cherry-pick fails' ' + git read-tree --reset -u HEAD && + test_must_fail git cherry-pick --no-commit remote && + git read-tree --reset -u HEAD && + test_must_fail git cherry-pick remote && + test_must_fail git update-index --refresh && + grep "<<<<<<" text.txt +' + +test_expect_success '-Xignore-space-change makes cherry-pick succeed' ' + git read-tree --reset -u HEAD && + git cherry-pick --no-commit -Xignore-space-change remote +' + test_expect_success '--ignore-space-change: our w/s-only change wins' ' q_to_cr <<-\EOF >expected && justice and holiness and is the nurse of his age and theQ |