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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 '^[^#]' "$1" >/dev/null |
376ccb8c JS |
168 | } |
169 | ||
90e1818f NH |
170 | is_empty_commit() { |
171 | tree=$(git rev-parse -q --verify "$1"^{tree} 2>/dev/null || | |
172 | die "$1: not a commit that can be picked") | |
173 | ptree=$(git rev-parse -q --verify "$1"^^{tree} 2>/dev/null || | |
174 | ptree=4b825dc642cb6eb9a060e54bf8d69288fbee4904) | |
175 | test "$tree" = "$ptree" | |
176 | } | |
177 | ||
7756ecff MH |
178 | # Run command with GIT_AUTHOR_NAME, GIT_AUTHOR_EMAIL, and |
179 | # GIT_AUTHOR_DATE exported from the current environment. | |
180 | do_with_author () { | |
76c9c0db JH |
181 | ( |
182 | export GIT_AUTHOR_NAME GIT_AUTHOR_EMAIL GIT_AUTHOR_DATE | |
183 | "$@" | |
184 | ) | |
7756ecff MH |
185 | } |
186 | ||
821881d8 PO |
187 | git_sequence_editor () { |
188 | if test -z "$GIT_SEQUENCE_EDITOR" | |
189 | then | |
190 | GIT_SEQUENCE_EDITOR="$(git config sequence.editor)" | |
191 | if [ -z "$GIT_SEQUENCE_EDITOR" ] | |
192 | then | |
193 | GIT_SEQUENCE_EDITOR="$(git var GIT_EDITOR)" || return $? | |
194 | fi | |
195 | fi | |
196 | ||
197 | eval "$GIT_SEQUENCE_EDITOR" '"$@"' | |
198 | } | |
199 | ||
1b1dce4b | 200 | pick_one () { |
8e75abfd | 201 | ff=--ff |
90e1818f | 202 | |
8e75abfd | 203 | case "$1" in -n) sha1=$2; ff= ;; *) sha1=$1 ;; esac |
6bb4e485 | 204 | case "$force_rebase" in '') ;; ?*) ff= ;; esac |
dfa49f33 | 205 | output git rev-parse --verify $sha1 || die "Invalid commit name: $sha1" |
90e1818f NH |
206 | |
207 | if is_empty_commit "$sha1" | |
208 | then | |
209 | empty_args="--allow-empty" | |
210 | fi | |
211 | ||
6bb4e485 | 212 | test -d "$rewritten" && |
f09c9b8c | 213 | pick_one_preserving_merges "$@" && return |
90e1818f | 214 | output git cherry-pick $empty_args $ff "$@" |
1b1dce4b JS |
215 | } |
216 | ||
f09c9b8c | 217 | pick_one_preserving_merges () { |
71d9451e TR |
218 | fast_forward=t |
219 | case "$1" in | |
220 | -n) | |
221 | fast_forward=f | |
222 | sha1=$2 | |
223 | ;; | |
224 | *) | |
225 | sha1=$1 | |
226 | ;; | |
227 | esac | |
f09c9b8c JS |
228 | sha1=$(git rev-parse $sha1) |
229 | ||
431b7e78 | 230 | if test -f "$state_dir"/current-commit |
f09c9b8c | 231 | then |
4c1360f4 | 232 | if test "$fast_forward" = t |
bb645071 | 233 | then |
41f556b9 | 234 | while read current_commit |
bb645071 | 235 | do |
6bb4e485 | 236 | git rev-parse HEAD > "$rewritten"/$current_commit |
431b7e78 MZ |
237 | done <"$state_dir"/current-commit |
238 | rm "$state_dir"/current-commit || | |
bb645071 SH |
239 | die "Cannot write current commit's replacement sha1" |
240 | fi | |
f09c9b8c JS |
241 | fi |
242 | ||
431b7e78 | 243 | echo $sha1 >> "$state_dir"/current-commit |
a96dc01e | 244 | |
f09c9b8c | 245 | # rewrite parents; if none were rewritten, we can fast-forward. |
f09c9b8c | 246 | new_parents= |
d911d146 TR |
247 | pend=" $(git rev-list --parents -1 $sha1 | cut -d' ' -s -f2-)" |
248 | if test "$pend" = " " | |
249 | then | |
250 | pend=" root" | |
251 | fi | |
faae853c | 252 | while [ "$pend" != "" ] |
f09c9b8c | 253 | do |
faae853c SH |
254 | p=$(expr "$pend" : ' \([^ ]*\)') |
255 | pend="${pend# $p}" | |
256 | ||
6bb4e485 | 257 | if test -f "$rewritten"/$p |
f09c9b8c | 258 | then |
6bb4e485 | 259 | new_p=$(cat "$rewritten"/$p) |
80fe82e4 SH |
260 | |
261 | # If the todo reordered commits, and our parent is marked for | |
262 | # rewriting, but hasn't been gotten to yet, assume the user meant to | |
263 | # drop it on top of the current HEAD | |
264 | if test -z "$new_p" | |
265 | then | |
266 | new_p=$(git rev-parse HEAD) | |
267 | fi | |
268 | ||
f09c9b8c JS |
269 | test $p != $new_p && fast_forward=f |
270 | case "$new_parents" in | |
271 | *$new_p*) | |
272 | ;; # do nothing; that parent is already there | |
273 | *) | |
274 | new_parents="$new_parents $new_p" | |
376ccb8c | 275 | ;; |
f09c9b8c | 276 | esac |
1c5fa0a1 | 277 | else |
6bb4e485 | 278 | if test -f "$dropped"/$p |
faae853c SH |
279 | then |
280 | fast_forward=f | |
6bb4e485 | 281 | replacement="$(cat "$dropped"/$p)" |
d911d146 TR |
282 | test -z "$replacement" && replacement=root |
283 | pend=" $replacement$pend" | |
faae853c SH |
284 | else |
285 | new_parents="$new_parents $p" | |
286 | fi | |
f09c9b8c JS |
287 | fi |
288 | done | |
289 | case $fast_forward in | |
290 | t) | |
a75d7b54 | 291 | output warn "Fast-forward to $sha1" |
71d9451e | 292 | output git reset --hard $sha1 || |
a75d7b54 | 293 | die "Cannot fast-forward to $sha1" |
f09c9b8c JS |
294 | ;; |
295 | f) | |
376ccb8c | 296 | first_parent=$(expr "$new_parents" : ' \([^ ]*\)') |
a4f25e36 SH |
297 | |
298 | if [ "$1" != "-n" ] | |
299 | then | |
300 | # detach HEAD to current parent | |
301 | output git checkout $first_parent 2> /dev/null || | |
302 | die "Cannot move HEAD to $first_parent" | |
303 | fi | |
f09c9b8c | 304 | |
f09c9b8c | 305 | case "$new_parents" in |
376ccb8c | 306 | ' '*' '*) |
a4f25e36 SH |
307 | test "a$1" = a-n && die "Refusing to squash a merge: $sha1" |
308 | ||
f09c9b8c | 309 | # redo merge |
6bb4e485 MZ |
310 | author_script_content=$(get_author_ident_from_commit $sha1) |
311 | eval "$author_script_content" | |
312 | msg_content="$(commit_message $sha1)" | |
f91333d6 BS |
313 | # No point in merging the first parent, that's HEAD |
314 | new_parents=${new_parents# $first_parent} | |
7756ecff | 315 | if ! do_with_author output \ |
9fdc1cc8 | 316 | git merge --no-ff ${strategy:+-s $strategy} -m \ |
9765b6ab | 317 | "$msg_content" $new_parents |
f09c9b8c | 318 | then |
6bb4e485 | 319 | printf "%s\n" "$msg_content" > "$GIT_DIR"/MERGE_MSG |
f5b49ea6 | 320 | die_with_patch $sha1 "Error redoing merge $sha1" |
f09c9b8c | 321 | fi |
6bb4e485 | 322 | echo "$sha1 $(git rev-parse HEAD^0)" >> "$rewritten_list" |
f09c9b8c JS |
323 | ;; |
324 | *) | |
2a9c53e0 | 325 | output git cherry-pick "$@" || |
f09c9b8c | 326 | die_with_patch $sha1 "Could not pick $sha1" |
376ccb8c | 327 | ;; |
f09c9b8c | 328 | esac |
376ccb8c | 329 | ;; |
f09c9b8c JS |
330 | esac |
331 | } | |
332 | ||
6368f3f8 JS |
333 | nth_string () { |
334 | case "$1" in | |
335 | *1[0-9]|*[04-9]) echo "$1"th;; | |
336 | *1) echo "$1"st;; | |
337 | *2) echo "$1"nd;; | |
338 | *3) echo "$1"rd;; | |
339 | esac | |
340 | } | |
341 | ||
a25eb139 | 342 | update_squash_messages () { |
6bb4e485 MZ |
343 | if test -f "$squash_msg"; then |
344 | mv "$squash_msg" "$squash_msg".bak || exit | |
345 | count=$(($(sed -n \ | |
f99e269c | 346 | -e "1s/^# This is a combination of \(.*\) commits\./\1/p" \ |
6bb4e485 | 347 | -e "q" < "$squash_msg".bak)+1)) |
bde1a686 | 348 | { |
6bb4e485 | 349 | echo "# This is a combination of $count commits." |
bde1a686 MH |
350 | sed -e 1d -e '2,/^./{ |
351 | /^$/d | |
6bb4e485 MZ |
352 | }' <"$squash_msg".bak |
353 | } >"$squash_msg" | |
6368f3f8 | 354 | else |
6bb4e485 MZ |
355 | commit_message HEAD > "$fixup_msg" || die "Cannot write $fixup_msg" |
356 | count=2 | |
bde1a686 MH |
357 | { |
358 | echo "# This is a combination of 2 commits." | |
359 | echo "# The first commit's message is:" | |
360 | echo | |
6bb4e485 MZ |
361 | cat "$fixup_msg" |
362 | } >"$squash_msg" | |
6368f3f8 | 363 | fi |
0205e72f MH |
364 | case $1 in |
365 | squash) | |
6bb4e485 | 366 | rm -f "$fixup_msg" |
0205e72f | 367 | echo |
6bb4e485 | 368 | echo "# This is the $(nth_string $count) commit message:" |
0205e72f | 369 | echo |
ee0a4afb | 370 | commit_message $2 |
0205e72f MH |
371 | ;; |
372 | fixup) | |
373 | echo | |
6bb4e485 | 374 | echo "# The $(nth_string $count) commit message will be skipped:" |
0205e72f | 375 | echo |
ee0a4afb | 376 | commit_message $2 | sed -e 's/^/# /' |
0205e72f | 377 | ;; |
6bb4e485 | 378 | esac >>"$squash_msg" |
6368f3f8 JS |
379 | } |
380 | ||
381 | peek_next_command () { | |
6bb4e485 | 382 | sed -n -e "/^#/d" -e '/^$/d' -e "s/ .*//p" -e "q" < "$todo" |
6368f3f8 JS |
383 | } |
384 | ||
6bdcd0d2 MH |
385 | # A squash/fixup has failed. Prepare the long version of the squash |
386 | # commit message, then die_with_patch. This code path requires the | |
387 | # user to edit the combined commit message for all commits that have | |
388 | # been squashed/fixedup so far. So also erase the old squash | |
389 | # messages, effectively causing the combined commit to be used as the | |
390 | # new basis for any further squash/fixups. Args: sha1 rest | |
391 | die_failed_squash() { | |
6bb4e485 MZ |
392 | mv "$squash_msg" "$msg" || exit |
393 | rm -f "$fixup_msg" | |
394 | cp "$msg" "$GIT_DIR"/MERGE_MSG || exit | |
6bdcd0d2 MH |
395 | warn |
396 | warn "Could not apply $1... $2" | |
397 | die_with_patch $1 "" | |
398 | } | |
399 | ||
b079feed | 400 | flush_rewritten_pending() { |
6bb4e485 | 401 | test -s "$rewritten_pending" || return |
b079feed | 402 | newsha1="$(git rev-parse HEAD^0)" |
6bb4e485 MZ |
403 | sed "s/$/ $newsha1/" < "$rewritten_pending" >> "$rewritten_list" |
404 | rm -f "$rewritten_pending" | |
b079feed TR |
405 | } |
406 | ||
407 | record_in_rewritten() { | |
408 | oldsha1="$(git rev-parse $1)" | |
6bb4e485 | 409 | echo "$oldsha1" >> "$rewritten_pending" |
b079feed TR |
410 | |
411 | case "$(peek_next_command)" in | |
41f556b9 | 412 | squash|s|fixup|f) |
b079feed | 413 | ;; |
41f556b9 | 414 | *) |
b079feed TR |
415 | flush_rewritten_pending |
416 | ;; | |
417 | esac | |
418 | } | |
419 | ||
1b1dce4b | 420 | do_next () { |
6bb4e485 MZ |
421 | rm -f "$msg" "$author_script" "$amend" || exit |
422 | read -r command sha1 rest < "$todo" | |
1b1dce4b | 423 | case "$command" in |
ff74126c | 424 | '#'*|''|noop) |
1b1dce4b | 425 | mark_action_done |
1b1dce4b | 426 | ;; |
f8babc4d | 427 | pick|p) |
1b1dce4b JS |
428 | comment_for_reflog pick |
429 | ||
430 | mark_action_done | |
431 | pick_one $sha1 || | |
432 | die_with_patch $sha1 "Could not apply $sha1... $rest" | |
b079feed | 433 | record_in_rewritten $sha1 |
1b1dce4b | 434 | ;; |
6741aa6c BG |
435 | reword|r) |
436 | comment_for_reflog reword | |
437 | ||
438 | mark_action_done | |
439 | pick_one $sha1 || | |
440 | die_with_patch $sha1 "Could not apply $sha1... $rest" | |
0becb3e4 AW |
441 | git commit --amend --no-post-rewrite || { |
442 | warn "Could not amend commit after successfully picking $sha1... $rest" | |
443 | warn "This is most likely due to an empty commit message, or the pre-commit hook" | |
444 | warn "failed. If the pre-commit hook failed, you may need to resolve the issue before" | |
445 | warn "you are able to reword the commit." | |
446 | exit_with_patch $sha1 1 | |
447 | } | |
b079feed | 448 | record_in_rewritten $sha1 |
6741aa6c | 449 | ;; |
f8babc4d | 450 | edit|e) |
1b1dce4b JS |
451 | comment_for_reflog edit |
452 | ||
453 | mark_action_done | |
454 | pick_one $sha1 || | |
455 | die_with_patch $sha1 "Could not apply $sha1... $rest" | |
a8ccc204 | 456 | warn "Stopped at $sha1... $rest" |
0becb3e4 | 457 | exit_with_patch $sha1 0 |
1b1dce4b | 458 | ;; |
0205e72f MH |
459 | squash|s|fixup|f) |
460 | case "$command" in | |
461 | squash|s) | |
462 | squash_style=squash | |
463 | ;; | |
464 | fixup|f) | |
465 | squash_style=fixup | |
466 | ;; | |
467 | esac | |
468 | comment_for_reflog $squash_style | |
1b1dce4b | 469 | |
6bb4e485 | 470 | test -f "$done" && has_action "$done" || |
0205e72f | 471 | die "Cannot '$squash_style' without a previous commit" |
1b1dce4b JS |
472 | |
473 | mark_action_done | |
a25eb139 | 474 | update_squash_messages $squash_style $sha1 |
6bb4e485 MZ |
475 | author_script_content=$(get_author_ident_from_commit HEAD) |
476 | echo "$author_script_content" > "$author_script" | |
477 | eval "$author_script_content" | |
7c418836 | 478 | output git reset --soft HEAD^ |
6bdcd0d2 | 479 | pick_one -n $sha1 || die_failed_squash $sha1 "$rest" |
6368f3f8 | 480 | case "$(peek_next_command)" in |
0205e72f | 481 | squash|s|fixup|f) |
a25eb139 MH |
482 | # This is an intermediate commit; its message will only be |
483 | # used in case of trouble. So use the long version: | |
6bb4e485 | 484 | do_with_author output git commit --no-verify -F "$squash_msg" || |
6bdcd0d2 | 485 | die_failed_squash $sha1 "$rest" |
376ccb8c | 486 | ;; |
6368f3f8 | 487 | *) |
a25eb139 | 488 | # This is the final command of this squash/fixup group |
6bb4e485 | 489 | if test -f "$fixup_msg" |
a25eb139 | 490 | then |
6bb4e485 | 491 | do_with_author git commit --no-verify -F "$fixup_msg" || |
6bdcd0d2 MH |
492 | die_failed_squash $sha1 "$rest" |
493 | else | |
6bb4e485 | 494 | cp "$squash_msg" "$GIT_DIR"/SQUASH_MSG || exit |
6bdcd0d2 MH |
495 | rm -f "$GIT_DIR"/MERGE_MSG |
496 | do_with_author git commit --no-verify -e || | |
497 | die_failed_squash $sha1 "$rest" | |
a25eb139 | 498 | fi |
6bb4e485 | 499 | rm -f "$squash_msg" "$fixup_msg" |
376ccb8c | 500 | ;; |
6368f3f8 | 501 | esac |
b079feed | 502 | record_in_rewritten $sha1 |
1b1dce4b | 503 | ;; |
cd035b1c | 504 | x|"exec") |
6bb4e485 | 505 | read -r command rest < "$todo" |
cd035b1c MM |
506 | mark_action_done |
507 | printf 'Executing: %s\n' "$rest" | |
508 | # "exec" command doesn't take a sha1 in the todo-list. | |
509 | # => can't just use $sha1 here. | |
431b7e78 | 510 | git rev-parse --verify HEAD > "$state_dir"/stopped-sha |
cd035b1c MM |
511 | ${SHELL:-@SHELL_PATH@} -c "$rest" # Actual execution |
512 | status=$? | |
1686519a JH |
513 | # Run in subshell because require_clean_work_tree can die. |
514 | dirty=f | |
515 | (require_clean_work_tree "rebase" 2>/dev/null) || dirty=t | |
cd035b1c MM |
516 | if test "$status" -ne 0 |
517 | then | |
518 | warn "Execution failed: $rest" | |
1686519a JH |
519 | test "$dirty" = f || |
520 | warn "and made changes to the index and/or the working tree" | |
521 | ||
cd035b1c MM |
522 | warn "You can fix the problem, and then run" |
523 | warn | |
524 | warn " git rebase --continue" | |
525 | warn | |
526 | exit "$status" | |
1686519a | 527 | elif test "$dirty" = t |
cd035b1c | 528 | then |
1686519a JH |
529 | warn "Execution succeeded: $rest" |
530 | warn "but left changes to the index and/or the working tree" | |
cd035b1c MM |
531 | warn "Commit or stash your changes, and then run" |
532 | warn | |
533 | warn " git rebase --continue" | |
534 | warn | |
535 | exit 1 | |
536 | fi | |
537 | ;; | |
1b1dce4b JS |
538 | *) |
539 | warn "Unknown command: $command $sha1 $rest" | |
f1be316a JK |
540 | if git rev-parse --verify -q "$sha1" >/dev/null |
541 | then | |
6bb4e485 | 542 | die_with_patch $sha1 "Please fix this in the file $todo." |
f1be316a | 543 | else |
6bb4e485 | 544 | die "Please fix this in the file $todo." |
f1be316a | 545 | fi |
376ccb8c | 546 | ;; |
1b1dce4b | 547 | esac |
6bb4e485 | 548 | test -s "$todo" && return |
1b1dce4b | 549 | |
68a163c9 | 550 | comment_for_reflog finish && |
2959c283 | 551 | shortonto=$(git rev-parse --short $onto) && |
6bb4e485 | 552 | newhead=$(git rev-parse HEAD) && |
431b7e78 | 553 | case $head_name in |
73697a0b | 554 | refs/*) |
431b7e78 MZ |
555 | message="$GIT_REFLOG_ACTION: $head_name onto $shortonto" && |
556 | git update-ref -m "$message" $head_name $newhead $orig_head && | |
53f2ffa8 JK |
557 | git symbolic-ref \ |
558 | -m "$GIT_REFLOG_ACTION: returning to $head_name" \ | |
559 | HEAD $head_name | |
73697a0b JS |
560 | ;; |
561 | esac && { | |
431b7e78 | 562 | test ! -f "$state_dir"/verbose || |
2959c283 | 563 | git diff-tree --stat $orig_head..HEAD |
3df0a859 | 564 | } && |
eb2151bb | 565 | { |
6bb4e485 MZ |
566 | test -s "$rewritten_list" && |
567 | git notes copy --for-rewrite=rebase < "$rewritten_list" || | |
eb2151bb TR |
568 | true # we don't care if this copying failed |
569 | } && | |
b079feed | 570 | if test -x "$GIT_DIR"/hooks/post-rewrite && |
6bb4e485 MZ |
571 | test -s "$rewritten_list"; then |
572 | "$GIT_DIR"/hooks/post-rewrite rebase < "$rewritten_list" | |
b079feed TR |
573 | true # we don't care if this hook failed |
574 | fi && | |
431b7e78 | 575 | rm -rf "$state_dir" && |
73697a0b | 576 | git gc --auto && |
431b7e78 | 577 | warn "Successfully rebased and updated $head_name." |
1b1dce4b JS |
578 | |
579 | exit | |
580 | } | |
581 | ||
582 | do_rest () { | |
583 | while : | |
584 | do | |
585 | do_next | |
586 | done | |
1b1dce4b JS |
587 | } |
588 | ||
0e757e30 JS |
589 | # skip picking commits whose parents are unchanged |
590 | skip_unnecessary_picks () { | |
591 | fd=3 | |
2d6ca6ef | 592 | while read -r command rest |
0e757e30 JS |
593 | do |
594 | # fd=3 means we skip the command | |
2d6ca6ef BC |
595 | case "$fd,$command" in |
596 | 3,pick|3,p) | |
6bb4e485 | 597 | # pick a commit whose parent is current $onto -> skip |
14d87298 | 598 | sha1=${rest%% *} |
2d6ca6ef | 599 | case "$(git rev-parse --verify --quiet "$sha1"^)" in |
6bb4e485 MZ |
600 | "$onto"*) |
601 | onto=$sha1 | |
2d6ca6ef BC |
602 | ;; |
603 | *) | |
604 | fd=1 | |
605 | ;; | |
606 | esac | |
0e757e30 | 607 | ;; |
2d6ca6ef | 608 | 3,#*|3,) |
0e757e30 JS |
609 | # copy comments |
610 | ;; | |
611 | *) | |
612 | fd=1 | |
613 | ;; | |
614 | esac | |
d1c3b10f | 615 | printf '%s\n' "$command${rest:+ }$rest" >&$fd |
6bb4e485 MZ |
616 | done <"$todo" >"$todo.new" 3>>"$done" && |
617 | mv -f "$todo".new "$todo" && | |
b079feed TR |
618 | case "$(peek_next_command)" in |
619 | squash|s|fixup|f) | |
6bb4e485 | 620 | record_in_rewritten "$onto" |
b079feed TR |
621 | ;; |
622 | esac || | |
0e757e30 JS |
623 | die "Could not skip unnecessary pick commands" |
624 | } | |
625 | ||
f59baa50 NS |
626 | # Rearrange the todo list that has both "pick sha1 msg" and |
627 | # "pick sha1 fixup!/squash! msg" appears in it so that the latter | |
628 | # comes immediately after the former, and change "pick" to | |
629 | # "fixup"/"squash". | |
630 | rearrange_squash () { | |
68d5d03b KB |
631 | # extract fixup!/squash! lines and resolve any referenced sha1's |
632 | while read -r pick sha1 message | |
633 | do | |
634 | case "$message" in | |
635 | "squash! "*|"fixup! "*) | |
636 | action="${message%%!*}" | |
637 | rest="${message#*! }" | |
638 | echo "$sha1 $action $rest" | |
639 | # if it's a single word, try to resolve to a full sha1 and | |
640 | # emit a second copy. This allows us to match on both message | |
641 | # and on sha1 prefix | |
642 | if test "${rest#* }" = "$rest"; then | |
643 | fullsha="$(git rev-parse -q --verify "$rest" 2>/dev/null)" | |
644 | if test -n "$fullsha"; then | |
645 | # prefix the action to uniquely identify this line as | |
646 | # intended for full sha1 match | |
647 | echo "$sha1 +$action $fullsha" | |
648 | fi | |
649 | fi | |
650 | esac | |
651 | done >"$1.sq" <"$1" | |
f59baa50 NS |
652 | test -s "$1.sq" || return |
653 | ||
654 | used= | |
57f2b6b2 | 655 | while read -r pick sha1 message |
f59baa50 NS |
656 | do |
657 | case " $used" in | |
658 | *" $sha1 "*) continue ;; | |
659 | esac | |
938791cd | 660 | printf '%s\n' "$pick $sha1 $message" |
d3d7a421 | 661 | used="$used$sha1 " |
6bb4e485 | 662 | while read -r squash action msg_content |
f59baa50 | 663 | do |
d3d7a421 KB |
664 | case " $used" in |
665 | *" $squash "*) continue ;; | |
666 | esac | |
68d5d03b KB |
667 | emit=0 |
668 | case "$action" in | |
669 | +*) | |
670 | action="${action#+}" | |
671 | # full sha1 prefix test | |
6bb4e485 | 672 | case "$msg_content" in "$sha1"*) emit=1;; esac ;; |
68d5d03b KB |
673 | *) |
674 | # message prefix test | |
6bb4e485 | 675 | case "$message" in "$msg_content"*) emit=1;; esac ;; |
68d5d03b KB |
676 | esac |
677 | if test $emit = 1; then | |
6bb4e485 | 678 | printf '%s\n' "$action $squash $action! $msg_content" |
f59baa50 | 679 | used="$used$squash " |
68d5d03b | 680 | fi |
f59baa50 NS |
681 | done <"$1.sq" |
682 | done >"$1.rearranged" <"$1" | |
683 | cat "$1.rearranged" >"$1" | |
684 | rm -f "$1.sq" "$1.rearranged" | |
685 | } | |
686 | ||
cf432ca0 MZ |
687 | case "$action" in |
688 | continue) | |
cf432ca0 | 689 | # do we have anything to commit? |
a6754cda | 690 | if git diff-index --cached --quiet HEAD -- |
cf432ca0 MZ |
691 | then |
692 | : Nothing to commit -- skip this | |
693 | else | |
ffaaed88 MM |
694 | if ! test -f "$author_script" |
695 | then | |
696 | die "You have staged changes in your working tree. If these changes are meant to be | |
697 | squashed into the previous commit, run: | |
698 | ||
699 | git commit --amend | |
700 | ||
701 | If they are meant to go into a new commit, run: | |
702 | ||
703 | git commit | |
704 | ||
705 | In both case, once you're done, continue with: | |
706 | ||
707 | git rebase --continue | |
708 | " | |
709 | fi | |
cf432ca0 | 710 | . "$author_script" || |
ffaaed88 | 711 | die "Error trying to find the author identity to amend commit" |
cf432ca0 MZ |
712 | current_head= |
713 | if test -f "$amend" | |
03270628 | 714 | then |
cf432ca0 MZ |
715 | current_head=$(git rev-parse --verify HEAD) |
716 | test "$current_head" = $(cat "$amend") || | |
717 | die "\ | |
c14c3c82 DP |
718 | You have uncommitted changes in your working tree. Please, commit them |
719 | first and then run 'git rebase --continue' again." | |
cf432ca0 MZ |
720 | git reset --soft HEAD^ || |
721 | die "Cannot rewind the HEAD" | |
03270628 | 722 | fi |
cf432ca0 MZ |
723 | do_with_author git commit --no-verify -F "$msg" -e || { |
724 | test -n "$current_head" && git reset --soft $current_head | |
725 | die "Could not commit staged changes." | |
726 | } | |
727 | fi | |
18640d99 | 728 | |
431b7e78 | 729 | record_in_rewritten "$(cat "$state_dir"/stopped-sha)" |
0acb62f2 | 730 | |
cf432ca0 MZ |
731 | require_clean_work_tree "rebase" |
732 | do_rest | |
733 | ;; | |
cf432ca0 | 734 | skip) |
cf432ca0 | 735 | git rerere clear |
cf432ca0 | 736 | |
2959c283 | 737 | do_rest |
cf432ca0 MZ |
738 | ;; |
739 | esac | |
1b1dce4b | 740 | |
34262322 MZ |
741 | git var GIT_COMMITTER_IDENT >/dev/null || |
742 | die "You need to set your committer info first" | |
1b1dce4b | 743 | |
34262322 MZ |
744 | comment_for_reflog start |
745 | ||
71786f54 | 746 | if test ! -z "$switch_to" |
34262322 | 747 | then |
71786f54 MZ |
748 | output git checkout "$switch_to" -- || |
749 | die "Could not checkout $switch_to" | |
34262322 MZ |
750 | fi |
751 | ||
431b7e78 MZ |
752 | orig_head=$(git rev-parse --verify HEAD) || die "No HEAD?" |
753 | mkdir "$state_dir" || die "Could not create temporary $state_dir" | |
34262322 | 754 | |
431b7e78 | 755 | : > "$state_dir"/interactive || die "Could not mark as interactive" |
84df4560 | 756 | write_basic_state |
6bb4e485 | 757 | if test t = "$preserve_merges" |
34262322 | 758 | then |
6bb4e485 | 759 | if test -z "$rebase_root" |
34262322 | 760 | then |
6bb4e485 | 761 | mkdir "$rewritten" && |
431b7e78 | 762 | for c in $(git merge-base --all $orig_head $upstream) |
acc8559a | 763 | do |
6bb4e485 | 764 | echo $onto > "$rewritten"/$c || |
34262322 | 765 | die "Could not init rewritten commits" |
acc8559a | 766 | done |
34262322 | 767 | else |
6bb4e485 MZ |
768 | mkdir "$rewritten" && |
769 | echo $onto > "$rewritten"/root || | |
34262322 MZ |
770 | die "Could not init rewritten commits" |
771 | fi | |
772 | # No cherry-pick because our first pass is to determine | |
773 | # parents to rewrite and skipping dropped commits would | |
774 | # prematurely end our probe | |
6bb4e485 | 775 | merges_option= |
34262322 | 776 | else |
6bb4e485 | 777 | merges_option="--no-merges --cherry-pick" |
34262322 MZ |
778 | fi |
779 | ||
431b7e78 | 780 | shorthead=$(git rev-parse --short $orig_head) |
6bb4e485 MZ |
781 | shortonto=$(git rev-parse --short $onto) |
782 | if test -z "$rebase_root" | |
783 | # this is now equivalent to ! -z "$upstream" | |
34262322 | 784 | then |
6bb4e485 | 785 | shortupstream=$(git rev-parse --short $upstream) |
431b7e78 | 786 | revisions=$upstream...$orig_head |
6bb4e485 | 787 | shortrevisions=$shortupstream..$shorthead |
34262322 | 788 | else |
431b7e78 | 789 | revisions=$onto...$orig_head |
6bb4e485 | 790 | shortrevisions=$shorthead |
34262322 | 791 | fi |
6bb4e485 | 792 | git rev-list $merges_option --pretty=oneline --abbrev-commit \ |
34262322 | 793 | --abbrev=7 --reverse --left-right --topo-order \ |
6bb4e485 | 794 | $revisions | \ |
34262322 MZ |
795 | sed -n "s/^>//p" | |
796 | while read -r shortsha1 rest | |
797 | do | |
90e1818f NH |
798 | |
799 | if test -z "$keep_empty" && is_empty_commit $shortsha1 | |
800 | then | |
801 | comment_out="# " | |
802 | else | |
803 | comment_out= | |
804 | fi | |
805 | ||
6bb4e485 | 806 | if test t != "$preserve_merges" |
34262322 | 807 | then |
90e1818f | 808 | printf '%s\n' "${comment_out}pick $shortsha1 $rest" >>"$todo" |
34262322 MZ |
809 | else |
810 | sha1=$(git rev-parse $shortsha1) | |
6bb4e485 | 811 | if test -z "$rebase_root" |
acc8559a | 812 | then |
34262322 MZ |
813 | preserve=t |
814 | for p in $(git rev-list --parents -1 $sha1 | cut -d' ' -s -f2-) | |
acc8559a | 815 | do |
12bf8283 | 816 | if test -f "$rewritten"/$p |
acc8559a | 817 | then |
34262322 | 818 | preserve=f |
acc8559a SH |
819 | fi |
820 | done | |
34262322 MZ |
821 | else |
822 | preserve=f | |
823 | fi | |
824 | if test f = "$preserve" | |
825 | then | |
6bb4e485 | 826 | touch "$rewritten"/$sha1 |
90e1818f | 827 | printf '%s\n' "${comment_out}pick $shortsha1 $rest" >>"$todo" |
acc8559a | 828 | fi |
34262322 MZ |
829 | fi |
830 | done | |
d911d146 | 831 | |
34262322 | 832 | # Watch for commits that been dropped by --cherry-pick |
6bb4e485 | 833 | if test t = "$preserve_merges" |
34262322 | 834 | then |
6bb4e485 | 835 | mkdir "$dropped" |
34262322 | 836 | # Save all non-cherry-picked changes |
6bb4e485 | 837 | git rev-list $revisions --left-right --cherry-pick | \ |
431b7e78 | 838 | sed -n "s/^>//p" > "$state_dir"/not-cherry-picks |
34262322 MZ |
839 | # Now all commits and note which ones are missing in |
840 | # not-cherry-picks and hence being dropped | |
6bb4e485 | 841 | git rev-list $revisions | |
34262322 MZ |
842 | while read rev |
843 | do | |
431b7e78 | 844 | if test -f "$rewritten"/$rev -a "$(sane_grep "$rev" "$state_dir"/not-cherry-picks)" = "" |
34262322 MZ |
845 | then |
846 | # Use -f2 because if rev-list is telling us this commit is | |
847 | # not worthwhile, we don't want to track its multiple heads, | |
848 | # just the history of its first-parent for others that will | |
849 | # be rebasing on top of it | |
6bb4e485 | 850 | git rev-list --parents -1 $rev | cut -d' ' -s -f2 > "$dropped"/$rev |
34262322 | 851 | short=$(git rev-list -1 --abbrev-commit --abbrev=7 $rev) |
6bb4e485 MZ |
852 | sane_grep -v "^[a-z][a-z]* $short" <"$todo" > "${todo}2" ; mv "${todo}2" "$todo" |
853 | rm "$rewritten"/$rev | |
34262322 MZ |
854 | fi |
855 | done | |
856 | fi | |
857 | ||
6bb4e485 MZ |
858 | test -s "$todo" || echo noop >> "$todo" |
859 | test -n "$autosquash" && rearrange_squash "$todo" | |
860 | cat >> "$todo" << EOF | |
6047a234 | 861 | |
6bb4e485 | 862 | # Rebase $shortrevisions onto $shortonto |
1b1dce4b JS |
863 | # |
864 | # Commands: | |
88b1f0b8 | 865 | # p, pick = use commit |
6741aa6c | 866 | # r, reword = use commit, but edit the commit message |
88b1f0b8 MV |
867 | # e, edit = use commit, but stop for amending |
868 | # s, squash = use commit, but meld into previous commit | |
0205e72f | 869 | # f, fixup = like "squash", but discard this commit's log message |
960ac5ff | 870 | # x, exec = run command (the rest of the line) using shell |
82576ddb | 871 | # |
8a93f957 JH |
872 | # These lines can be re-ordered; they are executed from top to bottom. |
873 | # | |
82576ddb | 874 | # If you remove a line here THAT COMMIT WILL BE LOST. |
6047a234 | 875 | # However, if you remove everything, the rebase will be aborted. |
82576ddb | 876 | # |
1b1dce4b | 877 | EOF |
1b1dce4b | 878 | |
90e1818f NH |
879 | if test -z "$keep_empty" |
880 | then | |
881 | echo "# Note that empty commits are commented out" >>"$todo" | |
882 | fi | |
883 | ||
884 | ||
6bb4e485 | 885 | has_action "$todo" || |
34262322 | 886 | die_abort "Nothing to do" |
1b1dce4b | 887 | |
6bb4e485 | 888 | cp "$todo" "$todo".backup |
821881d8 | 889 | git_sequence_editor "$todo" || |
34262322 | 890 | die_abort "Could not execute editor" |
1b1dce4b | 891 | |
6bb4e485 | 892 | has_action "$todo" || |
34262322 | 893 | die_abort "Nothing to do" |
c54b7817 | 894 | |
6bb4e485 | 895 | test -d "$rewritten" || test -n "$force_rebase" || skip_unnecessary_picks |
0e757e30 | 896 | |
6bb4e485 | 897 | output git checkout $onto || die_abort "could not detach HEAD" |
431b7e78 | 898 | git update-ref ORIG_HEAD $orig_head |
34262322 | 899 | do_rest |