3 USAGE='[help|start|bad|good|skip|next|reset|visualize|replay|log|run]'
4 LONG_USAGE='git bisect help
5 print this long help message.
6 git bisect start [<bad> [<good>...]] [--] [<pathspec>...]
7 reset bisect state and start bisection.
9 mark <rev> a known-bad revision.
10 git bisect good [<rev>...]
11 mark <rev>... known-good revisions.
12 git bisect skip [<rev>...]
13 mark <rev>... untestable revisions.
15 find next bisection to test and check it out.
16 git bisect reset [<branch>]
17 finish bisection search and go back to branch.
19 show bisect status in gitk.
20 git bisect replay <logfile>
24 git bisect run <cmd>...
25 use <cmd>... to automatically bisect.
27 Please use "git help bisect" to get the full man page.'
33 _x40='[0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f]'
34 _x40="$_x40$_x40$_x40$_x40$_x40$_x40$_x40$_x40"
39 s/'\''/'\'\\\\\'\''/g;
47 test -f "$GIT_DIR/BISECT_NAMES" || {
48 echo >&2 'You need to start by "git bisect start"'
51 echo >&2 -n 'Do you want me to do it for you [Y/n]? '
66 # Verify HEAD. If we were bisecting before this, reset to the
67 # top-of-line master first!
69 head=$(GIT_DIR="$GIT_DIR" git symbolic-ref HEAD) ||
70 head=$(GIT_DIR="$GIT_DIR" git rev-parse --verify HEAD) ||
71 die "Bad HEAD - I need a HEAD"
74 if [ -s "$GIT_DIR/BISECT_START" ]; then
75 branch=`cat "$GIT_DIR/BISECT_START"`
79 git checkout $branch || exit
82 # This error message should only be triggered by cogito usage,
83 # and cogito users should understand it relates to cg-seek.
84 [ -s "$GIT_DIR/head-name" ] && die "won't bisect on seeked tree"
85 echo "${head#refs/heads/}" >"$GIT_DIR/BISECT_START"
88 die "Bad HEAD - strange symbolic ref"
93 # Get rid of any old bisect state
98 # Check for one bad and then some good revisions.
102 case "$arg" in --) has_double_dash=1; break ;; esac
106 while [ $# -gt 0 ]; do
114 rev=$(git rev-parse --verify "$arg^{commit}" 2>/dev/null) || {
115 test $has_double_dash -eq 1 &&
116 die "'$arg' does not appear to be a valid revision"
120 0) state='bad' ; bad_seen=1 ;;
123 bisect_write "$state" "$rev" 'nolog'
129 sq "$@" >"$GIT_DIR/BISECT_NAMES"
130 echo "git-bisect start$orig_args" >>"$GIT_DIR/BISECT_LOG"
140 good|skip) tag="$state"-"$rev" ;;
141 *) die "Bad bisect_write argument: $state" ;;
143 git update-ref "refs/bisect/$tag" "$rev"
144 echo "# $state: $(git show-branch $rev)" >>"$GIT_DIR/BISECT_LOG"
145 test -z "$nolog" && echo "git-bisect $state $rev" >>"$GIT_DIR/BISECT_LOG"
153 die "Please call 'bisect_state' with at least one argument." ;;
155 rev=$(git rev-parse --verify HEAD) ||
156 die "Bad rev input: HEAD"
157 bisect_write "$state" "$rev" ;;
159 rev=$(git rev-parse --verify "$2^{commit}") ||
160 die "Bad rev input: $2"
161 bisect_write "$state" "$rev" ;;
164 revs=$(git rev-parse --revs-only --no-flags "$@") &&
165 test '' != "$revs" || die "Bad rev input: $@"
168 rev=$(git rev-parse --verify "$rev^{commit}") ||
169 die "Bad rev commit: $rev^{commit}"
170 bisect_write "$state" "$rev"
178 bisect_next_check() {
179 missing_good= missing_bad=
180 git show-ref -q --verify refs/bisect/bad || missing_bad=t
181 test -n "$(git for-each-ref "refs/bisect/good-*")" || missing_good=t
183 case "$missing_good,$missing_bad,$1" in
185 : have both good and bad - ok
188 # do not have both but not asked to fail - just report.
192 # have bad but not good. we could bisect although
193 # this is less optimum.
194 echo >&2 'Warning: bisecting only with a bad commit.'
197 printf >&2 'Are you sure [Y/n]? '
198 case "$(read yesno)" in [Nn]*) exit 1 ;; esac
200 : bisect without good...
204 test -f "$GIT_DIR/BISECT_NAMES" || {
205 echo >&2 'You need to start by "git bisect start".'
208 echo >&2 'You '$THEN'need to give me at least one good' \
209 'and one bad revisions.'
210 echo >&2 '(You can use "git bisect bad" and' \
211 '"git bisect good" for that.)'
217 bisect_next_check && bisect_next || :
224 if [ -z "$_skip" ]; then
229 # Let's parse the output of:
230 # "git rev-list --bisect-vars --bisect-all ..."
231 eval $_eval | while read hash line
233 case "$VARS,$FOUND,$TRIED,$hash" in
234 # We display some vars.
235 1,*,*,*) echo "$hash $line" ;;
240 # We had nothing to search.
246 # We did not find a good bisect rev.
247 # This should happen only if the "bad"
248 # commit is also a "skip" commit.
250 echo "bisect_rev=$TRIED"
256 TRIED="${TRIED:+$TRIED|}$hash"
260 echo "bisect_rev=$hash"
261 echo "bisect_tried=\"$TRIED\""
267 # We have already found a rev to be tested.
268 ,1,*,bisect_rev*) VARS=1 ;;
272 *) die "filter_skipped error " \
283 exit_if_skipped_commits () {
285 if expr "$_tried" : ".*[|].*" > /dev/null ; then
286 echo "There are only 'skip'ped commit left to test."
287 echo "The first bad commit could be any of:"
288 echo "$_tried" | tr '[|]' '[\012]'
289 echo "We cannot bisect more!"
295 case "$#" in 0) ;; *) usage ;; esac
297 bisect_next_check good
299 skip=$(git for-each-ref --format='%(objectname)' \
300 "refs/bisect/skip-*" | tr '\012' ' ') || exit
303 test -n "$skip" && BISECT_OPT='--bisect-all'
305 bad=$(git rev-parse --verify refs/bisect/bad) &&
306 good=$(git for-each-ref --format='^%(objectname)' \
307 "refs/bisect/good-*" | tr '\012' ' ') &&
308 eval="git rev-list --bisect-vars $BISECT_OPT $good $bad --" &&
309 eval="$eval $(cat "$GIT_DIR/BISECT_NAMES")" &&
310 eval=$(filter_skipped "$eval" "$skip") &&
313 if [ -z "$bisect_rev" ]; then
314 echo "$bad was both good and bad"
317 if [ "$bisect_rev" = "$bad" ]; then
318 exit_if_skipped_commits "$bisect_tried"
319 echo "$bisect_rev is first bad commit"
320 git diff-tree --pretty $bisect_rev
324 # We should exit here only if the "bad"
325 # commit is also a "skip" commit (see above).
326 exit_if_skipped_commits "$bisect_rev"
328 echo "Bisecting: $bisect_nr revisions left to test after this"
329 git branch -f new-bisect "$bisect_rev"
330 git checkout -q new-bisect || exit
331 git branch -M new-bisect bisect
332 git show-branch "$bisect_rev"
336 bisect_next_check fail
340 case "${DISPLAY+set}${MSYSTEM+set}${SECURITYSESSIONID+set}" in
347 -*) set git log "$@" ;;
352 not=$(git for-each-ref --format='%(refname)' "refs/bisect/good-*")
353 eval '"$@"' refs/bisect/bad --not $not -- $(cat "$GIT_DIR/BISECT_NAMES")
357 test -f "$GIT_DIR/BISECT_NAMES" || {
358 echo "We are not bisecting."
362 0) if [ -s "$GIT_DIR/BISECT_START" ]; then
363 branch=`cat "$GIT_DIR/BISECT_START"`
367 1) git show-ref --verify --quiet -- "refs/heads/$1" ||
368 die "$1 does not seem to be a valid branch"
373 if git checkout "$branch"; then
374 # Cleanup head-name if it got left by an old version of git-bisect
375 rm -f "$GIT_DIR/head-name"
376 rm -f "$GIT_DIR/BISECT_START"
381 bisect_clean_state() {
382 # There may be some refs packed during bisection.
383 git for-each-ref --format='%(refname) %(objectname)' refs/bisect/\* refs/heads/bisect |
386 git update-ref -d $ref $hash
388 rm -f "$GIT_DIR/BISECT_LOG"
389 rm -f "$GIT_DIR/BISECT_NAMES"
390 rm -f "$GIT_DIR/BISECT_RUN"
394 test -r "$1" || die "cannot read $1 for replaying"
396 while read bisect command rev
398 test "$bisect" = "git-bisect" || continue
401 cmd="bisect_start $rev"
404 bisect_write "$command" "$rev" ;;
406 die "?? what are you talking about?" ;;
413 bisect_next_check fail
421 # Check for really bad run error.
422 if [ $res -lt 0 -o $res -ge 128 ]; then
423 echo >&2 "bisect run failed:"
424 echo >&2 "exit code $res from '$@' is < 0 or >= 128"
428 # Find current state depending on run success or failure.
429 # A special exit code of 125 means cannot test.
430 if [ $res -eq 125 ]; then
432 elif [ $res -gt 0 ]; then
438 # We have to use a subshell because "bisect_state" can exit.
439 ( bisect_state $state > "$GIT_DIR/BISECT_RUN" )
442 cat "$GIT_DIR/BISECT_RUN"
444 if grep "first bad commit could be any of" "$GIT_DIR/BISECT_RUN" \
446 echo >&2 "bisect run cannot continue any more"
450 if [ $res -ne 0 ]; then
451 echo >&2 "bisect run failed:"
452 echo >&2 "'bisect_state $state' exited with error code $res"
456 if grep "is first bad commit" "$GIT_DIR/BISECT_RUN" > /dev/null; then
457 echo "bisect run success"
477 bisect_state "$cmd" "$@" ;;
479 # Not sure we want "next" at the UI level anymore.
482 bisect_visualize "$@" ;;
486 bisect_replay "$@" ;;
488 cat "$GIT_DIR/BISECT_LOG" ;;