Sync with 2.16.6
[git] / git-rebase--am.sh
1 # This shell script fragment is sourced by git-rebase to implement
2 # its default, fast, patch-based, non-interactive mode.
3 #
4 # Copyright (c) 2010 Junio C Hamano.
5 #
6
7 # The whole contents of this file is run by dot-sourcing it from
8 # inside a shell function.  It used to be that "return"s we see
9 # below were not inside any function, and expected to return
10 # to the function that dot-sourced us.
11 #
12 # However, older (9.x) versions of FreeBSD /bin/sh misbehave on such a
13 # construct and continue to run the statements that follow such a "return".
14 # As a work-around, we introduce an extra layer of a function
15 # here, and immediately call it after defining it.
16 git_rebase__am () {
17
18 case "$action" in
19 continue)
20         git am --resolved --resolvemsg="$resolvemsg" \
21                 ${gpg_sign_opt:+"$gpg_sign_opt"} &&
22         move_to_original_branch
23         return
24         ;;
25 skip)
26         git am --skip --resolvemsg="$resolvemsg" &&
27         move_to_original_branch
28         return
29         ;;
30 show-current-patch)
31         exec git am --show-current-patch
32         ;;
33 esac
34
35 if test -z "$rebase_root"
36         # this is now equivalent to ! -z "$upstream"
37 then
38         revisions=$upstream...$orig_head
39 else
40         revisions=$onto...$orig_head
41 fi
42
43 ret=0
44 if test -n "$keep_empty"
45 then
46         # we have to do this the hard way.  git format-patch completely squashes
47         # empty commits and even if it didn't the format doesn't really lend
48         # itself well to recording empty patches.  fortunately, cherry-pick
49         # makes this easy
50         git cherry-pick ${gpg_sign_opt:+"$gpg_sign_opt"} --allow-empty \
51                 $allow_rerere_autoupdate --right-only "$revisions" \
52                 $allow_empty_message \
53                 ${restrict_revision+^$restrict_revision}
54         ret=$?
55 else
56         rm -f "$GIT_DIR/rebased-patches"
57
58         git format-patch -k --stdout --full-index --cherry-pick --right-only \
59                 --src-prefix=a/ --dst-prefix=b/ --no-renames --no-cover-letter \
60                 --pretty=mboxrd \
61                 $git_format_patch_opt \
62                 "$revisions" ${restrict_revision+^$restrict_revision} \
63                 >"$GIT_DIR/rebased-patches"
64         ret=$?
65
66         if test 0 != $ret
67         then
68                 rm -f "$GIT_DIR/rebased-patches"
69                 case "$head_name" in
70                 refs/heads/*)
71                         git checkout -q "$head_name"
72                         ;;
73                 *)
74                         git checkout -q "$orig_head"
75                         ;;
76                 esac
77
78                 cat >&2 <<-EOF
79
80                 git encountered an error while preparing the patches to replay
81                 these revisions:
82
83                     $revisions
84
85                 As a result, git cannot rebase them.
86                 EOF
87                 return $ret
88         fi
89
90         git am $git_am_opt --rebasing --resolvemsg="$resolvemsg" \
91                 --patch-format=mboxrd \
92                 $allow_rerere_autoupdate \
93                 ${gpg_sign_opt:+"$gpg_sign_opt"} <"$GIT_DIR/rebased-patches"
94         ret=$?
95
96         rm -f "$GIT_DIR/rebased-patches"
97 fi
98
99 if test 0 != $ret
100 then
101         test -d "$state_dir" && write_basic_state
102         return $ret
103 fi
104
105 move_to_original_branch
106
107 }
108 # ... and then we call the whole thing.
109 git_rebase__am