This introduces a --patch mode for git-reset. The basic case is git reset --patch -- [files...] which acts as the opposite of 'git add --patch -- [files...]': it offers hunks for *un*staging. Advanced usage is git reset --patch <revision> -- [files...] which offers hunks from the diff between the index and <revision> for forward application to the index. (That is, the basic case is just <revision> = HEAD.) Signed-off-by: Thomas Rast <trast@xxxxxxxxxxxxxxx> --- Jeff noticed the prompt and patch direction weren't matching: http://article.gmane.org/gmane.comp.version-control.git/125981 This flips the direction of the patch in the 'git reset -p other' case, as I really wanted it that way around. Documentation/git-reset.txt | 15 ++++++++- builtin-reset.c | 19 ++++++++++++ git-add--interactive.perl | 57 +++++++++++++++++++++++++++++++++-- t/t7105-reset-patch.sh | 69 +++++++++++++++++++++++++++++++++++++++++++ 4 files changed, 154 insertions(+), 6 deletions(-) create mode 100755 t/t7105-reset-patch.sh diff --git a/Documentation/git-reset.txt b/Documentation/git-reset.txt index abb25d1..469cf6d 100644 --- a/Documentation/git-reset.txt +++ b/Documentation/git-reset.txt @@ -10,6 +10,7 @@ SYNOPSIS [verse] 'git reset' [--mixed | --soft | --hard | --merge] [-q] [<commit>] 'git reset' [-q] [<commit>] [--] <paths>... +'git reset' --patch [<commit>] [--] [<paths>...] DESCRIPTION ----------- @@ -23,8 +24,9 @@ the undo in the history. If you want to undo a commit other than the latest on a branch, linkgit:git-revert[1] is your friend. -The second form with 'paths' is used to revert selected paths in -the index from a given commit, without moving HEAD. +The second and third forms with 'paths' and/or --patch are used to +revert selected paths in the index from a given commit, without moving +HEAD. OPTIONS @@ -50,6 +52,15 @@ OPTIONS and updates the files that are different between the named commit and the current commit in the working tree. +-p:: +--patch:: + Interactively select hunks in the difference between the index + and <commit> (defaults to HEAD). The chosen hunks are applied + in reverse to the index. ++ +This means that `git reset -p` is the opposite of `git add -p` (see +linkgit:git-add[1]). + -q:: Be quiet, only report errors. diff --git a/builtin-reset.c b/builtin-reset.c index 5fa1789..246a127 100644 --- a/builtin-reset.c +++ b/builtin-reset.c @@ -142,6 +142,17 @@ static void update_index_from_diff(struct diff_queue_struct *q, } } +static int interactive_reset(const char *revision, const char **argv, + const char *prefix) +{ + const char **pathspec = NULL; + + if (*argv) + pathspec = get_pathspec(prefix, argv); + + return run_add_interactive(revision, "--patch=reset", pathspec); +} + static int read_from_tree(const char *prefix, const char **argv, unsigned char *tree_sha1, int refresh_flags) { @@ -183,6 +194,7 @@ static void prepend_reflog_action(const char *action, char *buf, size_t size) int cmd_reset(int argc, const char **argv, const char *prefix) { int i = 0, reset_type = NONE, update_ref_status = 0, quiet = 0; + int patch_mode = 0; const char *rev = "HEAD"; unsigned char sha1[20], *orig = NULL, sha1_orig[20], *old_orig = NULL, sha1_old_orig[20]; @@ -198,6 +210,7 @@ int cmd_reset(int argc, const char **argv, const char *prefix) "reset HEAD, index and working tree", MERGE), OPT_BOOLEAN('q', NULL, &quiet, "disable showing new HEAD in hard reset and progress message"), + OPT_BOOLEAN('p', "patch", &patch_mode, "select hunks interactively"), OPT_END() }; @@ -251,6 +264,12 @@ int cmd_reset(int argc, const char **argv, const char *prefix) die("Could not parse object '%s'.", rev); hashcpy(sha1, commit->object.sha1); + if (patch_mode) { + if (reset_type != NONE) + die("--patch is incompatible with --{hard,mixed,soft}"); + return interactive_reset(rev, argv + i, prefix); + } + /* git reset tree [--] paths... can be used to * load chosen paths from the tree into the index without * affecting the working tree nor HEAD. */ diff --git a/git-add--interactive.perl b/git-add--interactive.perl index 3606103..d14f48c 100755 --- a/git-add--interactive.perl +++ b/git-add--interactive.perl @@ -72,6 +72,7 @@ # command line options my $patch_mode; +my $patch_mode_revision; sub apply_patch; @@ -85,6 +86,24 @@ PARTICIPLE => 'staging', FILTER => 'file-only', }, + 'reset_head' => { + DIFF => 'diff-index -p --cached', + APPLY => sub { apply_patch 'apply -R --cached', @_; }, + APPLY_CHECK => 'apply -R --cached', + VERB => 'Unstage', + TARGET => '', + PARTICIPLE => 'unstaging', + FILTER => 'index-only', + }, + 'reset_nothead' => { + DIFF => 'diff-index -R -p --cached', + APPLY => sub { apply_patch 'apply --cached', @_; }, + APPLY_CHECK => 'apply --cached', + VERB => 'Apply', + TARGET => ' to index', + PARTICIPLE => 'applying', + FILTER => 'index-only', + }, ); my %patch_mode_flavour = %{$patch_modes{stage}}; @@ -206,7 +225,14 @@ return if (!@tracked); } - my $reference = is_initial_commit() ? get_empty_tree() : 'HEAD'; + my $reference; + if (defined $patch_mode_revision and $patch_mode_revision ne 'HEAD') { + $reference = $patch_mode_revision; + } elsif (is_initial_commit()) { + $reference = get_empty_tree(); + } else { + $reference = 'HEAD'; + } for (run_cmd_pipe(qw(git diff-index --cached --numstat --summary), $reference, '--', @tracked)) { @@ -640,6 +666,9 @@ sub parse_diff { my ($path) = @_; my @diff_cmd = split(" ", $patch_mode_flavour{DIFF}); + if (defined $patch_mode_revision) { + push @diff_cmd, $patch_mode_revision; + } my @diff = run_cmd_pipe("git", @diff_cmd, "--", $path); my @colored = (); if ($diff_use_color) { @@ -1391,11 +1420,31 @@ sub process_args { return unless @ARGV; my $arg = shift @ARGV; - if ($arg eq "--patch") { - $patch_mode = 1; - $arg = shift @ARGV or die "missing --"; + if ($arg =~ /--patch(?:=(.*))?/) { + if (defined $1) { + if ($1 eq 'reset') { + $patch_mode = 'reset_head'; + $patch_mode_revision = 'HEAD'; + $arg = shift @ARGV or die "missing --"; + if ($arg ne '--') { + $patch_mode_revision = $arg; + $patch_mode = ($arg eq 'HEAD' ? + 'reset_head' : 'reset_nothead'); + $arg = shift @ARGV or die "missing --"; + } + } elsif ($1 eq 'stage') { + $patch_mode = 'stage'; + $arg = shift @ARGV or die "missing --"; + } else { + die "unknown --patch mode: $1"; + } + } else { + $patch_mode = 'stage'; + $arg = shift @ARGV or die "missing --"; + } die "invalid argument $arg, expecting --" unless $arg eq "--"; + %patch_mode_flavour = %{$patch_modes{$patch_mode}}; } elsif ($arg ne "--") { die "invalid argument $arg, expecting --"; diff --git a/t/t7105-reset-patch.sh b/t/t7105-reset-patch.sh new file mode 100755 index 0000000..c1f4fc3 --- /dev/null +++ b/t/t7105-reset-patch.sh @@ -0,0 +1,69 @@ +#!/bin/sh + +test_description='git reset --patch' +. ./lib-patch-mode.sh + +test_expect_success 'setup' ' + mkdir dir && + echo parent > dir/foo && + echo dummy > bar && + git add dir && + git commit -m initial && + test_tick && + test_commit second dir/foo head && + set_and_save_state bar bar_work bar_index && + save_head +' + +# note: bar sorts before foo, so the first 'n' is always to skip 'bar' + +test_expect_success 'saying "n" does nothing' ' + set_and_save_state dir/foo work work + (echo n; echo n) | git reset -p && + verify_saved_state dir/foo && + verify_saved_state bar +' + +test_expect_success 'git reset -p' ' + (echo n; echo y) | git reset -p && + verify_state dir/foo work head && + verify_saved_state bar +' + +test_expect_success 'git reset -p HEAD^' ' + (echo n; echo y) | git reset -p HEAD^ && + verify_state dir/foo work parent && + verify_saved_state bar +' + +# The idea in the rest is that bar sorts first, so we always say 'y' +# first and if the path limiter fails it'll apply to bar instead of +# dir/foo. There's always an extra 'n' to reject edits to dir/foo in +# the failure case (and thus get out of the loop). + +test_expect_success 'git reset -p dir' ' + set_state dir/foo work work + (echo y; echo n) | git reset -p dir && + verify_state dir/foo work head && + verify_saved_state bar +' + +test_expect_success 'git reset -p -- foo (inside dir)' ' + set_state dir/foo work work + (echo y; echo n) | (cd dir && git reset -p -- foo) && + verify_state dir/foo work head && + verify_saved_state bar +' + +test_expect_success 'git reset -p HEAD^ -- dir' ' + (echo y; echo n) | git reset -p HEAD^ -- dir && + verify_state dir/foo work parent && + verify_saved_state bar +' + +test_expect_success 'none of this moved HEAD' ' + verify_saved_head +' + + +test_done -- 1.6.4.287.g3e02d -- To unsubscribe from this list: send the line "unsubscribe git" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html