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Commit | Line | Data |
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1b1dce4b JS |
1 | #!/bin/sh |
2 | # | |
3 | # Copyright (c) 2006 Johannes E. Schindelin | |
4 | ||
5 | # SHORT DESCRIPTION | |
6 | # | |
7 | # This script makes it easy to fix up commits in the middle of a series, | |
8 | # and rearrange commits. | |
9 | # | |
10 | # The original idea comes from Eric W. Biederman, in | |
11 | # http://article.gmane.org/gmane.comp.version-control.git/22407 | |
12 | ||
1b1dce4b | 13 | . git-sh-setup |
1b1dce4b | 14 | |
80883bb3 MH |
15 | # The file containing rebase commands, comments, and empty lines. |
16 | # This file is created by "git rebase -i" then edited by the user. As | |
17 | # the lines are processed, they are removed from the front of this | |
6bb4e485 | 18 | # file and written to the tail of $done. |
431b7e78 | 19 | todo="$state_dir"/git-rebase-todo |
80883bb3 MH |
20 | |
21 | # The rebase command lines that have already been processed. A line | |
22 | # is moved here when it is first handled, before any associated user | |
23 | # actions. | |
431b7e78 | 24 | done="$state_dir"/done |
80883bb3 MH |
25 | |
26 | # The commit message that is planned to be used for any changes that | |
27 | # need to be committed following a user interaction. | |
431b7e78 | 28 | msg="$state_dir"/message |
80883bb3 MH |
29 | |
30 | # The file into which is accumulated the suggested commit message for | |
31 | # squash/fixup commands. When the first of a series of squash/fixups | |
32 | # is seen, the file is created and the commit message from the | |
33 | # previous commit and from the first squash/fixup commit are written | |
34 | # to it. The commit message for each subsequent squash/fixup commit | |
35 | # is appended to the file as it is processed. | |
36 | # | |
37 | # The first line of the file is of the form | |
6bb4e485 MZ |
38 | # # This is a combination of $count commits. |
39 | # where $count is the number of commits whose messages have been | |
80883bb3 MH |
40 | # written to the file so far (including the initial "pick" commit). |
41 | # Each time that a commit message is processed, this line is read and | |
42 | # updated. It is deleted just before the combined commit is made. | |
431b7e78 | 43 | squash_msg="$state_dir"/message-squash |
80883bb3 | 44 | |
a25eb139 MH |
45 | # If the current series of squash/fixups has not yet included a squash |
46 | # command, then this file exists and holds the commit message of the | |
47 | # original "pick" commit. (If the series ends without a "squash" | |
48 | # command, then this can be used as the commit message of the combined | |
49 | # commit without opening the editor.) | |
431b7e78 | 50 | fixup_msg="$state_dir"/message-fixup |
a25eb139 | 51 | |
6bb4e485 MZ |
52 | # $rewritten is the name of a directory containing files for each |
53 | # commit that is reachable by at least one merge base of $head and | |
54 | # $upstream. They are not necessarily rewritten, but their children | |
80883bb3 MH |
55 | # might be. This ensures that commits on merged, but otherwise |
56 | # unrelated side branches are left alone. (Think "X" in the man page's | |
57 | # example.) | |
431b7e78 | 58 | rewritten="$state_dir"/rewritten |
80883bb3 | 59 | |
431b7e78 | 60 | dropped="$state_dir"/dropped |
0aac0de4 MH |
61 | |
62 | # A script to set the GIT_AUTHOR_NAME, GIT_AUTHOR_EMAIL, and | |
63 | # GIT_AUTHOR_DATE that will be used for the commit that is currently | |
64 | # being rebased. | |
431b7e78 | 65 | author_script="$state_dir"/author-script |
0aac0de4 | 66 | |
a4049ae7 MH |
67 | # When an "edit" rebase command is being processed, the SHA1 of the |
68 | # commit to be edited is recorded in this file. When "git rebase | |
69 | # --continue" is executed, if there are any staged changes then they | |
70 | # will be amended to the HEAD commit, but only provided the HEAD | |
71 | # commit is still the commit to be edited. When any other rebase | |
72 | # command is processed, this file is deleted. | |
431b7e78 | 73 | amend="$state_dir"/amend |
a4049ae7 | 74 | |
b079feed TR |
75 | # For the post-rewrite hook, we make a list of rewritten commits and |
76 | # their new sha1s. The rewritten-pending list keeps the sha1s of | |
77 | # commits that have been processed, but not committed yet, | |
78 | # e.g. because they are waiting for a 'squash' command. | |
431b7e78 MZ |
79 | rewritten_list="$state_dir"/rewritten-list |
80 | rewritten_pending="$state_dir"/rewritten-pending | |
6bb4e485 | 81 | |
89c7ae9c | 82 | GIT_CHERRY_PICK_HELP="$resolvemsg" |
804c7174 WC |
83 | export GIT_CHERRY_PICK_HELP |
84 | ||
1b1dce4b | 85 | warn () { |
938791cd | 86 | printf '%s\n' "$*" >&2 |
1b1dce4b JS |
87 | } |
88 | ||
ee0a4afb MH |
89 | # Output the commit message for the specified commit. |
90 | commit_message () { | |
91 | git cat-file commit "$1" | sed "1,/^$/d" | |
92 | } | |
93 | ||
6bb4e485 | 94 | orig_reflog_action="$GIT_REFLOG_ACTION" |
1b1dce4b JS |
95 | |
96 | comment_for_reflog () { | |
6bb4e485 | 97 | case "$orig_reflog_action" in |
1b1dce4b JS |
98 | ''|rebase*) |
99 | GIT_REFLOG_ACTION="rebase -i ($1)" | |
100 | export GIT_REFLOG_ACTION | |
376ccb8c | 101 | ;; |
1b1dce4b JS |
102 | esac |
103 | } | |
104 | ||
4e673877 | 105 | last_count= |
1b1dce4b | 106 | mark_action_done () { |
6bb4e485 MZ |
107 | sed -e 1q < "$todo" >> "$done" |
108 | sed -e 1d < "$todo" >> "$todo".new | |
109 | mv -f "$todo".new "$todo" | |
110 | new_count=$(sane_grep -c '^[^#]' < "$done") | |
111 | total=$(($new_count+$(sane_grep -c '^[^#]' < "$todo"))) | |
112 | if test "$last_count" != "$new_count" | |
4e673877 | 113 | then |
6bb4e485 MZ |
114 | last_count=$new_count |
115 | printf "Rebasing (%d/%d)\r" $new_count $total | |
116 | test -z "$verbose" || echo | |
4e673877 | 117 | fi |
1b1dce4b JS |
118 | } |
119 | ||
120 | make_patch () { | |
4fb1a19d JS |
121 | sha1_and_parents="$(git rev-list --parents -1 "$1")" |
122 | case "$sha1_and_parents" in | |
123 | ?*' '?*' '?*) | |
124 | git diff --cc $sha1_and_parents | |
125 | ;; | |
126 | ?*' '?*) | |
127 | git diff-tree -p "$1^!" | |
128 | ;; | |
129 | *) | |
130 | echo "Root commit" | |
131 | ;; | |
431b7e78 | 132 | esac > "$state_dir"/patch |
6bb4e485 MZ |
133 | test -f "$msg" || |
134 | commit_message "$1" > "$msg" | |
135 | test -f "$author_script" || | |
136 | get_author_ident_from_commit "$1" > "$author_script" | |
1b1dce4b JS |
137 | } |
138 | ||
139 | die_with_patch () { | |
431b7e78 | 140 | echo "$1" > "$state_dir"/stopped-sha |
1b1dce4b | 141 | make_patch "$1" |
ecfe72ff | 142 | git rerere |
1b1dce4b JS |
143 | die "$2" |
144 | } | |
145 | ||
0becb3e4 AW |
146 | exit_with_patch () { |
147 | echo "$1" > "$state_dir"/stopped-sha | |
148 | make_patch $1 | |
149 | git rev-parse --verify HEAD > "$amend" | |
150 | warn "You can amend the commit now, with" | |
151 | warn | |
152 | warn " git commit --amend" | |
153 | warn | |
154 | warn "Once you are satisfied with your changes, run" | |
155 | warn | |
156 | warn " git rebase --continue" | |
157 | warn | |
158 | exit $2 | |
159 | } | |
160 | ||
c54b7817 | 161 | die_abort () { |
431b7e78 | 162 | rm -rf "$state_dir" |
c54b7817 JS |
163 | die "$1" |
164 | } | |
165 | ||
376ccb8c | 166 | has_action () { |
e1622bfc | 167 | sane_grep '^[^#]' "$1" >/dev/null |
376ccb8c JS |
168 | } |
169 | ||
7756ecff MH |
170 | # Run command with GIT_AUTHOR_NAME, GIT_AUTHOR_EMAIL, and |
171 | # GIT_AUTHOR_DATE exported from the current environment. | |
172 | do_with_author () { | |
76c9c0db JH |
173 | ( |
174 | export GIT_AUTHOR_NAME GIT_AUTHOR_EMAIL GIT_AUTHOR_DATE | |
175 | "$@" | |
176 | ) | |
7756ecff MH |
177 | } |
178 | ||
821881d8 PO |
179 | git_sequence_editor () { |
180 | if test -z "$GIT_SEQUENCE_EDITOR" | |
181 | then | |
182 | GIT_SEQUENCE_EDITOR="$(git config sequence.editor)" | |
183 | if [ -z "$GIT_SEQUENCE_EDITOR" ] | |
184 | then | |
185 | GIT_SEQUENCE_EDITOR="$(git var GIT_EDITOR)" || return $? | |
186 | fi | |
187 | fi | |
188 | ||
189 | eval "$GIT_SEQUENCE_EDITOR" '"$@"' | |
190 | } | |
191 | ||
1b1dce4b | 192 | pick_one () { |
8e75abfd CC |
193 | ff=--ff |
194 | case "$1" in -n) sha1=$2; ff= ;; *) sha1=$1 ;; esac | |
6bb4e485 | 195 | case "$force_rebase" in '') ;; ?*) ff= ;; esac |
dfa49f33 | 196 | output git rev-parse --verify $sha1 || die "Invalid commit name: $sha1" |
6bb4e485 | 197 | test -d "$rewritten" && |
f09c9b8c | 198 | pick_one_preserving_merges "$@" && return |
8e75abfd | 199 | output git cherry-pick $ff "$@" |
1b1dce4b JS |
200 | } |
201 | ||
f09c9b8c | 202 | pick_one_preserving_merges () { |
71d9451e TR |
203 | fast_forward=t |
204 | case "$1" in | |
205 | -n) | |
206 | fast_forward=f | |
207 | sha1=$2 | |
208 | ;; | |
209 | *) | |
210 | sha1=$1 | |
211 | ;; | |
212 | esac | |
f09c9b8c JS |
213 | sha1=$(git rev-parse $sha1) |
214 | ||
431b7e78 | 215 | if test -f "$state_dir"/current-commit |
f09c9b8c | 216 | then |
4c1360f4 | 217 | if test "$fast_forward" = t |
bb645071 | 218 | then |
41f556b9 | 219 | while read current_commit |
bb645071 | 220 | do |
6bb4e485 | 221 | git rev-parse HEAD > "$rewritten"/$current_commit |
431b7e78 MZ |
222 | done <"$state_dir"/current-commit |
223 | rm "$state_dir"/current-commit || | |
bb645071 SH |
224 | die "Cannot write current commit's replacement sha1" |
225 | fi | |
f09c9b8c JS |
226 | fi |
227 | ||
431b7e78 | 228 | echo $sha1 >> "$state_dir"/current-commit |
a96dc01e | 229 | |
f09c9b8c | 230 | # rewrite parents; if none were rewritten, we can fast-forward. |
f09c9b8c | 231 | new_parents= |
d911d146 TR |
232 | pend=" $(git rev-list --parents -1 $sha1 | cut -d' ' -s -f2-)" |
233 | if test "$pend" = " " | |
234 | then | |
235 | pend=" root" | |
236 | fi | |
faae853c | 237 | while [ "$pend" != "" ] |
f09c9b8c | 238 | do |
faae853c SH |
239 | p=$(expr "$pend" : ' \([^ ]*\)') |
240 | pend="${pend# $p}" | |
241 | ||
6bb4e485 | 242 | if test -f "$rewritten"/$p |
f09c9b8c | 243 | then |
6bb4e485 | 244 | new_p=$(cat "$rewritten"/$p) |
80fe82e4 SH |
245 | |
246 | # If the todo reordered commits, and our parent is marked for | |
247 | # rewriting, but hasn't been gotten to yet, assume the user meant to | |
248 | # drop it on top of the current HEAD | |
249 | if test -z "$new_p" | |
250 | then | |
251 | new_p=$(git rev-parse HEAD) | |
252 | fi | |
253 | ||
f09c9b8c JS |
254 | test $p != $new_p && fast_forward=f |
255 | case "$new_parents" in | |
256 | *$new_p*) | |
257 | ;; # do nothing; that parent is already there | |
258 | *) | |
259 | new_parents="$new_parents $new_p" | |
376ccb8c | 260 | ;; |
f09c9b8c | 261 | esac |
1c5fa0a1 | 262 | else |
6bb4e485 | 263 | if test -f "$dropped"/$p |
faae853c SH |
264 | then |
265 | fast_forward=f | |
6bb4e485 | 266 | replacement="$(cat "$dropped"/$p)" |
d911d146 TR |
267 | test -z "$replacement" && replacement=root |
268 | pend=" $replacement$pend" | |
faae853c SH |
269 | else |
270 | new_parents="$new_parents $p" | |
271 | fi | |
f09c9b8c JS |
272 | fi |
273 | done | |
274 | case $fast_forward in | |
275 | t) | |
a75d7b54 | 276 | output warn "Fast-forward to $sha1" |
71d9451e | 277 | output git reset --hard $sha1 || |
a75d7b54 | 278 | die "Cannot fast-forward to $sha1" |
f09c9b8c JS |
279 | ;; |
280 | f) | |
376ccb8c | 281 | first_parent=$(expr "$new_parents" : ' \([^ ]*\)') |
a4f25e36 SH |
282 | |
283 | if [ "$1" != "-n" ] | |
284 | then | |
285 | # detach HEAD to current parent | |
286 | output git checkout $first_parent 2> /dev/null || | |
287 | die "Cannot move HEAD to $first_parent" | |
288 | fi | |
f09c9b8c | 289 | |
f09c9b8c | 290 | case "$new_parents" in |
376ccb8c | 291 | ' '*' '*) |
a4f25e36 SH |
292 | test "a$1" = a-n && die "Refusing to squash a merge: $sha1" |
293 | ||
f09c9b8c | 294 | # redo merge |
6bb4e485 MZ |
295 | author_script_content=$(get_author_ident_from_commit $sha1) |
296 | eval "$author_script_content" | |
297 | msg_content="$(commit_message $sha1)" | |
f91333d6 BS |
298 | # No point in merging the first parent, that's HEAD |
299 | new_parents=${new_parents# $first_parent} | |
7756ecff | 300 | if ! do_with_author output \ |
9fdc1cc8 | 301 | git merge --no-ff ${strategy:+-s $strategy} -m \ |
9765b6ab | 302 | "$msg_content" $new_parents |
f09c9b8c | 303 | then |
6bb4e485 | 304 | printf "%s\n" "$msg_content" > "$GIT_DIR"/MERGE_MSG |
f5b49ea6 | 305 | die_with_patch $sha1 "Error redoing merge $sha1" |
f09c9b8c | 306 | fi |
6bb4e485 | 307 | echo "$sha1 $(git rev-parse HEAD^0)" >> "$rewritten_list" |
f09c9b8c JS |
308 | ;; |
309 | *) | |
2a9c53e0 | 310 | output git cherry-pick "$@" || |
f09c9b8c | 311 | die_with_patch $sha1 "Could not pick $sha1" |
376ccb8c | 312 | ;; |
f09c9b8c | 313 | esac |
376ccb8c | 314 | ;; |
f09c9b8c JS |
315 | esac |
316 | } | |
317 | ||
6368f3f8 JS |
318 | nth_string () { |
319 | case "$1" in | |
320 | *1[0-9]|*[04-9]) echo "$1"th;; | |
321 | *1) echo "$1"st;; | |
322 | *2) echo "$1"nd;; | |
323 | *3) echo "$1"rd;; | |
324 | esac | |
325 | } | |
326 | ||
a25eb139 | 327 | update_squash_messages () { |
6bb4e485 MZ |
328 | if test -f "$squash_msg"; then |
329 | mv "$squash_msg" "$squash_msg".bak || exit | |
330 | count=$(($(sed -n \ | |
f99e269c | 331 | -e "1s/^# This is a combination of \(.*\) commits\./\1/p" \ |
6bb4e485 | 332 | -e "q" < "$squash_msg".bak)+1)) |
bde1a686 | 333 | { |
6bb4e485 | 334 | echo "# This is a combination of $count commits." |
bde1a686 MH |
335 | sed -e 1d -e '2,/^./{ |
336 | /^$/d | |
6bb4e485 MZ |
337 | }' <"$squash_msg".bak |
338 | } >"$squash_msg" | |
6368f3f8 | 339 | else |
6bb4e485 MZ |
340 | commit_message HEAD > "$fixup_msg" || die "Cannot write $fixup_msg" |
341 | count=2 | |
bde1a686 MH |
342 | { |
343 | echo "# This is a combination of 2 commits." | |
344 | echo "# The first commit's message is:" | |
345 | echo | |
6bb4e485 MZ |
346 | cat "$fixup_msg" |
347 | } >"$squash_msg" | |
6368f3f8 | 348 | fi |
0205e72f MH |
349 | case $1 in |
350 | squash) | |
6bb4e485 | 351 | rm -f "$fixup_msg" |
0205e72f | 352 | echo |
6bb4e485 | 353 | echo "# This is the $(nth_string $count) commit message:" |
0205e72f | 354 | echo |
ee0a4afb | 355 | commit_message $2 |
0205e72f MH |
356 | ;; |
357 | fixup) | |
358 | echo | |
6bb4e485 | 359 | echo "# The $(nth_string $count) commit message will be skipped:" |
0205e72f | 360 | echo |
ee0a4afb | 361 | commit_message $2 | sed -e 's/^/# /' |
0205e72f | 362 | ;; |
6bb4e485 | 363 | esac >>"$squash_msg" |
6368f3f8 JS |
364 | } |
365 | ||
366 | peek_next_command () { | |
6bb4e485 | 367 | sed -n -e "/^#/d" -e '/^$/d' -e "s/ .*//p" -e "q" < "$todo" |
6368f3f8 JS |
368 | } |
369 | ||
6bdcd0d2 MH |
370 | # A squash/fixup has failed. Prepare the long version of the squash |
371 | # commit message, then die_with_patch. This code path requires the | |
372 | # user to edit the combined commit message for all commits that have | |
373 | # been squashed/fixedup so far. So also erase the old squash | |
374 | # messages, effectively causing the combined commit to be used as the | |
375 | # new basis for any further squash/fixups. Args: sha1 rest | |
376 | die_failed_squash() { | |
6bb4e485 MZ |
377 | mv "$squash_msg" "$msg" || exit |
378 | rm -f "$fixup_msg" | |
379 | cp "$msg" "$GIT_DIR"/MERGE_MSG || exit | |
6bdcd0d2 MH |
380 | warn |
381 | warn "Could not apply $1... $2" | |
382 | die_with_patch $1 "" | |
383 | } | |
384 | ||
b079feed | 385 | flush_rewritten_pending() { |
6bb4e485 | 386 | test -s "$rewritten_pending" || return |
b079feed | 387 | newsha1="$(git rev-parse HEAD^0)" |
6bb4e485 MZ |
388 | sed "s/$/ $newsha1/" < "$rewritten_pending" >> "$rewritten_list" |
389 | rm -f "$rewritten_pending" | |
b079feed TR |
390 | } |
391 | ||
392 | record_in_rewritten() { | |
393 | oldsha1="$(git rev-parse $1)" | |
6bb4e485 | 394 | echo "$oldsha1" >> "$rewritten_pending" |
b079feed TR |
395 | |
396 | case "$(peek_next_command)" in | |
41f556b9 | 397 | squash|s|fixup|f) |
b079feed | 398 | ;; |
41f556b9 | 399 | *) |
b079feed TR |
400 | flush_rewritten_pending |
401 | ;; | |
402 | esac | |
403 | } | |
404 | ||
1b1dce4b | 405 | do_next () { |
6bb4e485 MZ |
406 | rm -f "$msg" "$author_script" "$amend" || exit |
407 | read -r command sha1 rest < "$todo" | |
1b1dce4b | 408 | case "$command" in |
ff74126c | 409 | '#'*|''|noop) |
1b1dce4b | 410 | mark_action_done |
1b1dce4b | 411 | ;; |
f8babc4d | 412 | pick|p) |
1b1dce4b JS |
413 | comment_for_reflog pick |
414 | ||
415 | mark_action_done | |
416 | pick_one $sha1 || | |
417 | die_with_patch $sha1 "Could not apply $sha1... $rest" | |
b079feed | 418 | record_in_rewritten $sha1 |
1b1dce4b | 419 | ;; |
6741aa6c BG |
420 | reword|r) |
421 | comment_for_reflog reword | |
422 | ||
423 | mark_action_done | |
424 | pick_one $sha1 || | |
425 | die_with_patch $sha1 "Could not apply $sha1... $rest" | |
0becb3e4 AW |
426 | git commit --amend --no-post-rewrite || { |
427 | warn "Could not amend commit after successfully picking $sha1... $rest" | |
428 | warn "This is most likely due to an empty commit message, or the pre-commit hook" | |
429 | warn "failed. If the pre-commit hook failed, you may need to resolve the issue before" | |
430 | warn "you are able to reword the commit." | |
431 | exit_with_patch $sha1 1 | |
432 | } | |
b079feed | 433 | record_in_rewritten $sha1 |
6741aa6c | 434 | ;; |
f8babc4d | 435 | edit|e) |
1b1dce4b JS |
436 | comment_for_reflog edit |
437 | ||
438 | mark_action_done | |
439 | pick_one $sha1 || | |
440 | die_with_patch $sha1 "Could not apply $sha1... $rest" | |
a8ccc204 | 441 | warn "Stopped at $sha1... $rest" |
0becb3e4 | 442 | exit_with_patch $sha1 0 |
1b1dce4b | 443 | ;; |
0205e72f MH |
444 | squash|s|fixup|f) |
445 | case "$command" in | |
446 | squash|s) | |
447 | squash_style=squash | |
448 | ;; | |
449 | fixup|f) | |
450 | squash_style=fixup | |
451 | ;; | |
452 | esac | |
453 | comment_for_reflog $squash_style | |
1b1dce4b | 454 | |
6bb4e485 | 455 | test -f "$done" && has_action "$done" || |
0205e72f | 456 | die "Cannot '$squash_style' without a previous commit" |
1b1dce4b JS |
457 | |
458 | mark_action_done | |
a25eb139 | 459 | update_squash_messages $squash_style $sha1 |
6bb4e485 MZ |
460 | author_script_content=$(get_author_ident_from_commit HEAD) |
461 | echo "$author_script_content" > "$author_script" | |
462 | eval "$author_script_content" | |
7c418836 | 463 | output git reset --soft HEAD^ |
6bdcd0d2 | 464 | pick_one -n $sha1 || die_failed_squash $sha1 "$rest" |
6368f3f8 | 465 | case "$(peek_next_command)" in |
0205e72f | 466 | squash|s|fixup|f) |
a25eb139 MH |
467 | # This is an intermediate commit; its message will only be |
468 | # used in case of trouble. So use the long version: | |
6bb4e485 | 469 | do_with_author output git commit --no-verify -F "$squash_msg" || |
6bdcd0d2 | 470 | die_failed_squash $sha1 "$rest" |
376ccb8c | 471 | ;; |
6368f3f8 | 472 | *) |
a25eb139 | 473 | # This is the final command of this squash/fixup group |
6bb4e485 | 474 | if test -f "$fixup_msg" |
a25eb139 | 475 | then |
6bb4e485 | 476 | do_with_author git commit --no-verify -F "$fixup_msg" || |
6bdcd0d2 MH |
477 | die_failed_squash $sha1 "$rest" |
478 | else | |
6bb4e485 | 479 | cp "$squash_msg" "$GIT_DIR"/SQUASH_MSG || exit |
6bdcd0d2 MH |
480 | rm -f "$GIT_DIR"/MERGE_MSG |
481 | do_with_author git commit --no-verify -e || | |
482 | die_failed_squash $sha1 "$rest" | |
a25eb139 | 483 | fi |
6bb4e485 | 484 | rm -f "$squash_msg" "$fixup_msg" |
376ccb8c | 485 | ;; |
6368f3f8 | 486 | esac |
b079feed | 487 | record_in_rewritten $sha1 |
1b1dce4b | 488 | ;; |
cd035b1c | 489 | x|"exec") |
6bb4e485 | 490 | read -r command rest < "$todo" |
cd035b1c MM |
491 | mark_action_done |
492 | printf 'Executing: %s\n' "$rest" | |
493 | # "exec" command doesn't take a sha1 in the todo-list. | |
494 | # => can't just use $sha1 here. | |
431b7e78 | 495 | git rev-parse --verify HEAD > "$state_dir"/stopped-sha |
cd035b1c MM |
496 | ${SHELL:-@SHELL_PATH@} -c "$rest" # Actual execution |
497 | status=$? | |
1686519a JH |
498 | # Run in subshell because require_clean_work_tree can die. |
499 | dirty=f | |
500 | (require_clean_work_tree "rebase" 2>/dev/null) || dirty=t | |
cd035b1c MM |
501 | if test "$status" -ne 0 |
502 | then | |
503 | warn "Execution failed: $rest" | |
1686519a JH |
504 | test "$dirty" = f || |
505 | warn "and made changes to the index and/or the working tree" | |
506 | ||
cd035b1c MM |
507 | warn "You can fix the problem, and then run" |
508 | warn | |
509 | warn " git rebase --continue" | |
510 | warn | |
511 | exit "$status" | |
1686519a | 512 | elif test "$dirty" = t |
cd035b1c | 513 | then |
1686519a JH |
514 | warn "Execution succeeded: $rest" |
515 | warn "but left changes to the index and/or the working tree" | |
cd035b1c MM |
516 | warn "Commit or stash your changes, and then run" |
517 | warn | |
518 | warn " git rebase --continue" | |
519 | warn | |
520 | exit 1 | |
521 | fi | |
522 | ;; | |
1b1dce4b JS |
523 | *) |
524 | warn "Unknown command: $command $sha1 $rest" | |
f1be316a JK |
525 | if git rev-parse --verify -q "$sha1" >/dev/null |
526 | then | |
6bb4e485 | 527 | die_with_patch $sha1 "Please fix this in the file $todo." |
f1be316a | 528 | else |
6bb4e485 | 529 | die "Please fix this in the file $todo." |
f1be316a | 530 | fi |
376ccb8c | 531 | ;; |
1b1dce4b | 532 | esac |
6bb4e485 | 533 | test -s "$todo" && return |
1b1dce4b | 534 | |
68a163c9 | 535 | comment_for_reflog finish && |
2959c283 | 536 | shortonto=$(git rev-parse --short $onto) && |
6bb4e485 | 537 | newhead=$(git rev-parse HEAD) && |
431b7e78 | 538 | case $head_name in |
73697a0b | 539 | refs/*) |
431b7e78 MZ |
540 | message="$GIT_REFLOG_ACTION: $head_name onto $shortonto" && |
541 | git update-ref -m "$message" $head_name $newhead $orig_head && | |
53f2ffa8 JK |
542 | git symbolic-ref \ |
543 | -m "$GIT_REFLOG_ACTION: returning to $head_name" \ | |
544 | HEAD $head_name | |
73697a0b JS |
545 | ;; |
546 | esac && { | |
431b7e78 | 547 | test ! -f "$state_dir"/verbose || |
2959c283 | 548 | git diff-tree --stat $orig_head..HEAD |
3df0a859 | 549 | } && |
eb2151bb | 550 | { |
6bb4e485 MZ |
551 | test -s "$rewritten_list" && |
552 | git notes copy --for-rewrite=rebase < "$rewritten_list" || | |
eb2151bb TR |
553 | true # we don't care if this copying failed |
554 | } && | |
b079feed | 555 | if test -x "$GIT_DIR"/hooks/post-rewrite && |
6bb4e485 MZ |
556 | test -s "$rewritten_list"; then |
557 | "$GIT_DIR"/hooks/post-rewrite rebase < "$rewritten_list" | |
b079feed TR |
558 | true # we don't care if this hook failed |
559 | fi && | |
431b7e78 | 560 | rm -rf "$state_dir" && |
73697a0b | 561 | git gc --auto && |
431b7e78 | 562 | warn "Successfully rebased and updated $head_name." |
1b1dce4b JS |
563 | |
564 | exit | |
565 | } | |
566 | ||
567 | do_rest () { | |
568 | while : | |
569 | do | |
570 | do_next | |
571 | done | |
1b1dce4b JS |
572 | } |
573 | ||
0e757e30 JS |
574 | # skip picking commits whose parents are unchanged |
575 | skip_unnecessary_picks () { | |
576 | fd=3 | |
2d6ca6ef | 577 | while read -r command rest |
0e757e30 JS |
578 | do |
579 | # fd=3 means we skip the command | |
2d6ca6ef BC |
580 | case "$fd,$command" in |
581 | 3,pick|3,p) | |
6bb4e485 | 582 | # pick a commit whose parent is current $onto -> skip |
14d87298 | 583 | sha1=${rest%% *} |
2d6ca6ef | 584 | case "$(git rev-parse --verify --quiet "$sha1"^)" in |
6bb4e485 MZ |
585 | "$onto"*) |
586 | onto=$sha1 | |
2d6ca6ef BC |
587 | ;; |
588 | *) | |
589 | fd=1 | |
590 | ;; | |
591 | esac | |
0e757e30 | 592 | ;; |
2d6ca6ef | 593 | 3,#*|3,) |
0e757e30 JS |
594 | # copy comments |
595 | ;; | |
596 | *) | |
597 | fd=1 | |
598 | ;; | |
599 | esac | |
d1c3b10f | 600 | printf '%s\n' "$command${rest:+ }$rest" >&$fd |
6bb4e485 MZ |
601 | done <"$todo" >"$todo.new" 3>>"$done" && |
602 | mv -f "$todo".new "$todo" && | |
b079feed TR |
603 | case "$(peek_next_command)" in |
604 | squash|s|fixup|f) | |
6bb4e485 | 605 | record_in_rewritten "$onto" |
b079feed TR |
606 | ;; |
607 | esac || | |
0e757e30 JS |
608 | die "Could not skip unnecessary pick commands" |
609 | } | |
610 | ||
f59baa50 NS |
611 | # Rearrange the todo list that has both "pick sha1 msg" and |
612 | # "pick sha1 fixup!/squash! msg" appears in it so that the latter | |
613 | # comes immediately after the former, and change "pick" to | |
614 | # "fixup"/"squash". | |
615 | rearrange_squash () { | |
68d5d03b KB |
616 | # extract fixup!/squash! lines and resolve any referenced sha1's |
617 | while read -r pick sha1 message | |
618 | do | |
619 | case "$message" in | |
620 | "squash! "*|"fixup! "*) | |
621 | action="${message%%!*}" | |
622 | rest="${message#*! }" | |
623 | echo "$sha1 $action $rest" | |
624 | # if it's a single word, try to resolve to a full sha1 and | |
625 | # emit a second copy. This allows us to match on both message | |
626 | # and on sha1 prefix | |
627 | if test "${rest#* }" = "$rest"; then | |
628 | fullsha="$(git rev-parse -q --verify "$rest" 2>/dev/null)" | |
629 | if test -n "$fullsha"; then | |
630 | # prefix the action to uniquely identify this line as | |
631 | # intended for full sha1 match | |
632 | echo "$sha1 +$action $fullsha" | |
633 | fi | |
634 | fi | |
635 | esac | |
636 | done >"$1.sq" <"$1" | |
f59baa50 NS |
637 | test -s "$1.sq" || return |
638 | ||
639 | used= | |
57f2b6b2 | 640 | while read -r pick sha1 message |
f59baa50 NS |
641 | do |
642 | case " $used" in | |
643 | *" $sha1 "*) continue ;; | |
644 | esac | |
938791cd | 645 | printf '%s\n' "$pick $sha1 $message" |
d3d7a421 | 646 | used="$used$sha1 " |
6bb4e485 | 647 | while read -r squash action msg_content |
f59baa50 | 648 | do |
d3d7a421 KB |
649 | case " $used" in |
650 | *" $squash "*) continue ;; | |
651 | esac | |
68d5d03b KB |
652 | emit=0 |
653 | case "$action" in | |
654 | +*) | |
655 | action="${action#+}" | |
656 | # full sha1 prefix test | |
6bb4e485 | 657 | case "$msg_content" in "$sha1"*) emit=1;; esac ;; |
68d5d03b KB |
658 | *) |
659 | # message prefix test | |
6bb4e485 | 660 | case "$message" in "$msg_content"*) emit=1;; esac ;; |
68d5d03b KB |
661 | esac |
662 | if test $emit = 1; then | |
6bb4e485 | 663 | printf '%s\n' "$action $squash $action! $msg_content" |
f59baa50 | 664 | used="$used$squash " |
68d5d03b | 665 | fi |
f59baa50 NS |
666 | done <"$1.sq" |
667 | done >"$1.rearranged" <"$1" | |
668 | cat "$1.rearranged" >"$1" | |
669 | rm -f "$1.sq" "$1.rearranged" | |
670 | } | |
671 | ||
cf432ca0 MZ |
672 | case "$action" in |
673 | continue) | |
cf432ca0 MZ |
674 | # do we have anything to commit? |
675 | if git diff-index --cached --quiet --ignore-submodules HEAD -- | |
676 | then | |
677 | : Nothing to commit -- skip this | |
678 | else | |
ffaaed88 MM |
679 | if ! test -f "$author_script" |
680 | then | |
681 | die "You have staged changes in your working tree. If these changes are meant to be | |
682 | squashed into the previous commit, run: | |
683 | ||
684 | git commit --amend | |
685 | ||
686 | If they are meant to go into a new commit, run: | |
687 | ||
688 | git commit | |
689 | ||
690 | In both case, once you're done, continue with: | |
691 | ||
692 | git rebase --continue | |
693 | " | |
694 | fi | |
cf432ca0 | 695 | . "$author_script" || |
ffaaed88 | 696 | die "Error trying to find the author identity to amend commit" |
cf432ca0 MZ |
697 | current_head= |
698 | if test -f "$amend" | |
03270628 | 699 | then |
cf432ca0 MZ |
700 | current_head=$(git rev-parse --verify HEAD) |
701 | test "$current_head" = $(cat "$amend") || | |
702 | die "\ | |
c14c3c82 DP |
703 | You have uncommitted changes in your working tree. Please, commit them |
704 | first and then run 'git rebase --continue' again." | |
cf432ca0 MZ |
705 | git reset --soft HEAD^ || |
706 | die "Cannot rewind the HEAD" | |
03270628 | 707 | fi |
cf432ca0 MZ |
708 | do_with_author git commit --no-verify -F "$msg" -e || { |
709 | test -n "$current_head" && git reset --soft $current_head | |
710 | die "Could not commit staged changes." | |
711 | } | |
712 | fi | |
18640d99 | 713 | |
431b7e78 | 714 | record_in_rewritten "$(cat "$state_dir"/stopped-sha)" |
0acb62f2 | 715 | |
cf432ca0 MZ |
716 | require_clean_work_tree "rebase" |
717 | do_rest | |
718 | ;; | |
cf432ca0 | 719 | skip) |
cf432ca0 | 720 | git rerere clear |
cf432ca0 | 721 | |
2959c283 | 722 | do_rest |
cf432ca0 MZ |
723 | ;; |
724 | esac | |
1b1dce4b | 725 | |
34262322 MZ |
726 | git var GIT_COMMITTER_IDENT >/dev/null || |
727 | die "You need to set your committer info first" | |
1b1dce4b | 728 | |
34262322 MZ |
729 | comment_for_reflog start |
730 | ||
71786f54 | 731 | if test ! -z "$switch_to" |
34262322 | 732 | then |
71786f54 MZ |
733 | output git checkout "$switch_to" -- || |
734 | die "Could not checkout $switch_to" | |
34262322 MZ |
735 | fi |
736 | ||
431b7e78 MZ |
737 | orig_head=$(git rev-parse --verify HEAD) || die "No HEAD?" |
738 | mkdir "$state_dir" || die "Could not create temporary $state_dir" | |
34262322 | 739 | |
431b7e78 | 740 | : > "$state_dir"/interactive || die "Could not mark as interactive" |
84df4560 | 741 | write_basic_state |
6bb4e485 | 742 | if test t = "$preserve_merges" |
34262322 | 743 | then |
6bb4e485 | 744 | if test -z "$rebase_root" |
34262322 | 745 | then |
6bb4e485 | 746 | mkdir "$rewritten" && |
431b7e78 | 747 | for c in $(git merge-base --all $orig_head $upstream) |
acc8559a | 748 | do |
6bb4e485 | 749 | echo $onto > "$rewritten"/$c || |
34262322 | 750 | die "Could not init rewritten commits" |
acc8559a | 751 | done |
34262322 | 752 | else |
6bb4e485 MZ |
753 | mkdir "$rewritten" && |
754 | echo $onto > "$rewritten"/root || | |
34262322 MZ |
755 | die "Could not init rewritten commits" |
756 | fi | |
757 | # No cherry-pick because our first pass is to determine | |
758 | # parents to rewrite and skipping dropped commits would | |
759 | # prematurely end our probe | |
6bb4e485 | 760 | merges_option= |
34262322 | 761 | else |
6bb4e485 | 762 | merges_option="--no-merges --cherry-pick" |
34262322 MZ |
763 | fi |
764 | ||
431b7e78 | 765 | shorthead=$(git rev-parse --short $orig_head) |
6bb4e485 MZ |
766 | shortonto=$(git rev-parse --short $onto) |
767 | if test -z "$rebase_root" | |
768 | # this is now equivalent to ! -z "$upstream" | |
34262322 | 769 | then |
6bb4e485 | 770 | shortupstream=$(git rev-parse --short $upstream) |
431b7e78 | 771 | revisions=$upstream...$orig_head |
6bb4e485 | 772 | shortrevisions=$shortupstream..$shorthead |
34262322 | 773 | else |
431b7e78 | 774 | revisions=$onto...$orig_head |
6bb4e485 | 775 | shortrevisions=$shorthead |
34262322 | 776 | fi |
6bb4e485 | 777 | git rev-list $merges_option --pretty=oneline --abbrev-commit \ |
34262322 | 778 | --abbrev=7 --reverse --left-right --topo-order \ |
6bb4e485 | 779 | $revisions | \ |
34262322 MZ |
780 | sed -n "s/^>//p" | |
781 | while read -r shortsha1 rest | |
782 | do | |
6bb4e485 | 783 | if test t != "$preserve_merges" |
34262322 | 784 | then |
6bb4e485 | 785 | printf '%s\n' "pick $shortsha1 $rest" >> "$todo" |
34262322 MZ |
786 | else |
787 | sha1=$(git rev-parse $shortsha1) | |
6bb4e485 | 788 | if test -z "$rebase_root" |
acc8559a | 789 | then |
34262322 MZ |
790 | preserve=t |
791 | for p in $(git rev-list --parents -1 $sha1 | cut -d' ' -s -f2-) | |
acc8559a | 792 | do |
12bf8283 | 793 | if test -f "$rewritten"/$p |
acc8559a | 794 | then |
34262322 | 795 | preserve=f |
acc8559a SH |
796 | fi |
797 | done | |
34262322 MZ |
798 | else |
799 | preserve=f | |
800 | fi | |
801 | if test f = "$preserve" | |
802 | then | |
6bb4e485 MZ |
803 | touch "$rewritten"/$sha1 |
804 | printf '%s\n' "pick $shortsha1 $rest" >> "$todo" | |
acc8559a | 805 | fi |
34262322 MZ |
806 | fi |
807 | done | |
d911d146 | 808 | |
34262322 | 809 | # Watch for commits that been dropped by --cherry-pick |
6bb4e485 | 810 | if test t = "$preserve_merges" |
34262322 | 811 | then |
6bb4e485 | 812 | mkdir "$dropped" |
34262322 | 813 | # Save all non-cherry-picked changes |
6bb4e485 | 814 | git rev-list $revisions --left-right --cherry-pick | \ |
431b7e78 | 815 | sed -n "s/^>//p" > "$state_dir"/not-cherry-picks |
34262322 MZ |
816 | # Now all commits and note which ones are missing in |
817 | # not-cherry-picks and hence being dropped | |
6bb4e485 | 818 | git rev-list $revisions | |
34262322 MZ |
819 | while read rev |
820 | do | |
431b7e78 | 821 | if test -f "$rewritten"/$rev -a "$(sane_grep "$rev" "$state_dir"/not-cherry-picks)" = "" |
34262322 MZ |
822 | then |
823 | # Use -f2 because if rev-list is telling us this commit is | |
824 | # not worthwhile, we don't want to track its multiple heads, | |
825 | # just the history of its first-parent for others that will | |
826 | # be rebasing on top of it | |
6bb4e485 | 827 | git rev-list --parents -1 $rev | cut -d' ' -s -f2 > "$dropped"/$rev |
34262322 | 828 | short=$(git rev-list -1 --abbrev-commit --abbrev=7 $rev) |
6bb4e485 MZ |
829 | sane_grep -v "^[a-z][a-z]* $short" <"$todo" > "${todo}2" ; mv "${todo}2" "$todo" |
830 | rm "$rewritten"/$rev | |
34262322 MZ |
831 | fi |
832 | done | |
833 | fi | |
834 | ||
6bb4e485 MZ |
835 | test -s "$todo" || echo noop >> "$todo" |
836 | test -n "$autosquash" && rearrange_squash "$todo" | |
837 | cat >> "$todo" << EOF | |
6047a234 | 838 | |
6bb4e485 | 839 | # Rebase $shortrevisions onto $shortonto |
1b1dce4b JS |
840 | # |
841 | # Commands: | |
88b1f0b8 | 842 | # p, pick = use commit |
6741aa6c | 843 | # r, reword = use commit, but edit the commit message |
88b1f0b8 MV |
844 | # e, edit = use commit, but stop for amending |
845 | # s, squash = use commit, but meld into previous commit | |
0205e72f | 846 | # f, fixup = like "squash", but discard this commit's log message |
960ac5ff | 847 | # x, exec = run command (the rest of the line) using shell |
82576ddb JS |
848 | # |
849 | # If you remove a line here THAT COMMIT WILL BE LOST. | |
6047a234 | 850 | # However, if you remove everything, the rebase will be aborted. |
82576ddb | 851 | # |
1b1dce4b | 852 | EOF |
1b1dce4b | 853 | |
6bb4e485 | 854 | has_action "$todo" || |
34262322 | 855 | die_abort "Nothing to do" |
1b1dce4b | 856 | |
6bb4e485 | 857 | cp "$todo" "$todo".backup |
821881d8 | 858 | git_sequence_editor "$todo" || |
34262322 | 859 | die_abort "Could not execute editor" |
1b1dce4b | 860 | |
6bb4e485 | 861 | has_action "$todo" || |
34262322 | 862 | die_abort "Nothing to do" |
c54b7817 | 863 | |
6bb4e485 | 864 | test -d "$rewritten" || test -n "$force_rebase" || skip_unnecessary_picks |
0e757e30 | 865 | |
6bb4e485 | 866 | output git checkout $onto || die_abort "could not detach HEAD" |
431b7e78 | 867 | git update-ref ORIG_HEAD $orig_head |
34262322 | 868 | do_rest |