builtin/rebase.c: make sure the active branch isn't moved when autostashing

diff --git a/git-add--interactive.perl b/git-add--interactive.perl
index c1f52e457f6c5b03947766555e10fba33e7e1b38..c20ae9e2102bff6bbf7b66135e2174ec68b33e81 100755 (executable)
--- a/git-add--interactive.perl
+++ b/git-add--interactive.perl
@@ -149,6 +149,20 @@ sub colored {
                FILTER => undef,
                IS_REVERSE => 0,
        },
+       'worktree_head' => {
+               DIFF => 'diff-index -p',
+               APPLY => sub { apply_patch 'apply -R', @_ },
+               APPLY_CHECK => 'apply -R',
+               FILTER => undef,
+               IS_REVERSE => 1,
+       },
+       'worktree_nothead' => {
+               DIFF => 'diff-index -R -p',
+               APPLY => sub { apply_patch 'apply', @_ },
+               APPLY_CHECK => 'apply',
+               FILTER => undef,
+               IS_REVERSE => 0,
+       },
 );
 
 $patch_mode = 'stage';
@@ -205,8 +219,15 @@ sub list_untracked {
        }
 }
 
-sub get_empty_tree {
-       return '4b825dc642cb6eb9a060e54bf8d69288fbee4904';
+{
+       my $empty_tree;
+       sub get_empty_tree {
+               return $empty_tree if defined $empty_tree;
+
+               $empty_tree = run_cmd_pipe(qw(git hash-object -t tree /dev/null));
+               chomp $empty_tree;
+               return $empty_tree;
+       }
 }
 
 sub get_diff_reference {
@@ -965,7 +986,11 @@ sub coalesce_overlapping_hunks {
                        next;
                }
                if ($ofs_delta) {
-                       $n_ofs += $ofs_delta;
+                       if ($patch_mode_flavour{IS_REVERSE}) {
+                               $o_ofs -= $ofs_delta;
+                       } else {
+                               $n_ofs += $ofs_delta;
+                       }
                        $_->{TEXT}->[0] = format_hunk_header($o_ofs, $o_cnt,
                                                             $n_ofs, $n_cnt);
                }
@@ -1042,6 +1067,12 @@ sub color_diff {
 marked for discarding."),
        checkout_nothead => N__(
 "If the patch applies cleanly, the edited hunk will immediately be
+marked for applying."),
+       worktree_head => N__(
+"If the patch applies cleanly, the edited hunk will immediately be
+marked for discarding."),
+       worktree_nothead => N__(
+"If the patch applies cleanly, the edited hunk will immediately be
 marked for applying."),
 );
 
@@ -1055,7 +1086,7 @@ sub recount_edited_hunk {
                        $o_cnt++;
                } elsif ($mode eq '+') {
                        $n_cnt++;
-               } elsif ($mode eq ' ') {
+               } elsif ($mode eq ' ' or $mode eq "\n") {
                        $o_cnt++;
                        $n_cnt++;
                }
@@ -1252,6 +1283,18 @@ sub edit_hunk_loop {
 n - do not apply this hunk to index and worktree
 q - quit; do not apply this hunk or any of the remaining ones
 a - apply this hunk and all later hunks in the file
+d - do not apply this hunk or any of the later hunks in the file"),
+       worktree_head => N__(
+"y - discard this hunk from worktree
+n - do not discard this hunk from worktree
+q - quit; do not discard this hunk or any of the remaining ones
+a - discard this hunk and all later hunks in the file
+d - do not discard this hunk or any of the later hunks in the file"),
+       worktree_nothead => N__(
+"y - apply this hunk to worktree
+n - do not apply this hunk to worktree
+q - quit; do not apply this hunk or any of the remaining ones
+a - apply this hunk and all later hunks in the file
 d - do not apply this hunk or any of the later hunks in the file"),
 );
 
@@ -1414,6 +1457,16 @@ sub display_hunks {
                deletion => N__("Apply deletion to index and worktree [y,n,q,a,d%s,?]? "),
                hunk => N__("Apply this hunk to index and worktree [y,n,q,a,d%s,?]? "),
        },
+       worktree_head => {
+               mode => N__("Discard mode change from worktree [y,n,q,a,d%s,?]? "),
+               deletion => N__("Discard deletion from worktree [y,n,q,a,d%s,?]? "),
+               hunk => N__("Discard this hunk from worktree [y,n,q,a,d%s,?]? "),
+       },
+       worktree_nothead => {
+               mode => N__("Apply mode change to worktree [y,n,q,a,d%s,?]? "),
+               deletion => N__("Apply deletion to worktree [y,n,q,a,d%s,?]? "),
+               hunk => N__("Apply this hunk to worktree [y,n,q,a,d%s,?]? "),
+       },
 );
 
 sub patch_update_file {
@@ -1749,6 +1802,16 @@ sub process_args {
                                                       'checkout_head' : 'checkout_nothead');
                                        $arg = shift @ARGV or die __("missing --");
                                }
+                       } elsif ($1 eq 'worktree') {
+                               $arg = shift @ARGV or die __("missing --");
+                               if ($arg eq '--') {
+                                       $patch_mode = 'checkout_index';
+                               } else {
+                                       $patch_mode_revision = $arg;
+                                       $patch_mode = ($arg eq 'HEAD' ?
+                                                      'worktree_head' : 'worktree_nothead');
+                                       $arg = shift @ARGV or die __("missing --");
+                               }
                        } elsif ($1 eq 'stage' or $1 eq 'stash') {
                                $patch_mode = $1;
                                $arg = shift @ARGV or die __("missing --");