#!/bin/sh
-USAGE='[start|bad|good|next|reset|visualize|replay|log|run]'
-LONG_USAGE='git bisect start [<bad> [<good>...]] [--] [<pathspec>...]
+USAGE='[help|start|bad|good|skip|next|reset|visualize|replay|log|run]'
+LONG_USAGE='git bisect help
+ print this long help message.
+git bisect start [<bad> [<good>...]] [--] [<pathspec>...]
reset bisect state and start bisection.
git bisect bad [<rev>]
mark <rev> a known-bad revision.
git bisect good [<rev>...]
mark <rev>... known-good revisions.
+git bisect skip [<rev>...]
+ mark <rev>... untestable revisions.
git bisect next
find next bisection to test and check it out.
git bisect reset [<branch>]
git bisect log
show bisect log.
git bisect run <cmd>...
- use <cmd>... to automatically bisect.'
+ use <cmd>... to automatically bisect.
+Please use "git help bisect" to get the full man page.'
+
+OPTIONS_SPEC=
. git-sh-setup
require_work_tree
+_x40='[0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f]'
+_x40="$_x40$_x40$_x40$_x40$_x40$_x40$_x40$_x40"
+
sq() {
@@PERL@@ -e '
for (@ARGV) {
}
bisect_autostart() {
- test -d "$GIT_DIR/refs/bisect" || {
+ test -s "$GIT_DIR/BISECT_START" || {
echo >&2 'You need to start by "git bisect start"'
if test -t 0
then
bisect_start() {
#
- # Verify HEAD. If we were bisecting before this, reset to the
- # top-of-line master first!
+ # Verify HEAD.
#
- head=$(GIT_DIR="$GIT_DIR" git symbolic-ref HEAD) ||
- die "Bad HEAD - I need a symbolic ref"
- case "$head" in
- refs/heads/bisect)
- if [ -s "$GIT_DIR/head-name" ]; then
- branch=`cat "$GIT_DIR/head-name"`
- else
- branch=master
- fi
- git checkout $branch || exit
- ;;
- refs/heads/*)
- [ -s "$GIT_DIR/head-name" ] && die "won't bisect on seeked tree"
- echo "$head" | sed 's#^refs/heads/##' >"$GIT_DIR/head-name"
- ;;
- *)
- die "Bad HEAD - strange symbolic ref"
- ;;
- esac
+ head=$(GIT_DIR="$GIT_DIR" git symbolic-ref -q HEAD) ||
+ head=$(GIT_DIR="$GIT_DIR" git rev-parse --verify HEAD) ||
+ die "Bad HEAD - I need a HEAD"
#
- # Get rid of any old bisect state
+ # Check if we are bisecting.
#
- bisect_clean_state
- mkdir "$GIT_DIR/refs/bisect"
+ start_head=''
+ if test -s "$GIT_DIR/BISECT_START"
+ then
+ # Reset to the rev from where we started.
+ start_head=$(cat "$GIT_DIR/BISECT_START")
+ git checkout "$start_head" || exit
+ else
+ # Get rev from where we start.
+ case "$head" in
+ refs/heads/*|$_x40)
+ # This error message should only be triggered by
+ # cogito usage, and cogito users should understand
+ # it relates to cg-seek.
+ [ -s "$GIT_DIR/head-name" ] &&
+ die "won't bisect on seeked tree"
+ start_head="${head#refs/heads/}"
+ ;;
+ *)
+ die "Bad HEAD - strange symbolic ref"
+ ;;
+ esac
+ fi
+
+ #
+ # Get rid of any old bisect state.
+ #
+ bisect_clean_state || exit
#
# Check for one bad and then some good revisions.
done
orig_args=$(sq "$@")
bad_seen=0
+ eval=''
while [ $# -gt 0 ]; do
arg="$1"
case "$arg" in
--)
- shift
+ shift
break
;;
*)
- rev=$(git rev-parse --verify "$arg^{commit}" 2>/dev/null) || {
+ rev=$(git rev-parse -q --verify "$arg^{commit}") || {
test $has_double_dash -eq 1 &&
die "'$arg' does not appear to be a valid revision"
break
}
- if [ $bad_seen -eq 0 ]; then
- bad_seen=1
- bisect_write_bad "$rev"
- else
- bisect_write_good "$rev"
- fi
- shift
+ case $bad_seen in
+ 0) state='bad' ; bad_seen=1 ;;
+ *) state='good' ;;
+ esac
+ eval="$eval bisect_write '$state' '$rev' 'nolog'; "
+ shift
;;
esac
- done
+ done
- sq "$@" >"$GIT_DIR/BISECT_NAMES"
- echo "git-bisect start$orig_args" >>"$GIT_DIR/BISECT_LOG"
- bisect_auto_next
-}
+ #
+ # Change state.
+ # In case of mistaken revs or checkout error, or signals received,
+ # "bisect_auto_next" below may exit or misbehave.
+ # We have to trap this to be able to clean up using
+ # "bisect_clean_state".
+ #
+ trap 'bisect_clean_state' 0
+ trap 'exit 255' 1 2 3 15
-bisect_bad() {
- bisect_autostart
- case "$#" in
- 0)
- rev=$(git rev-parse --verify HEAD) ;;
- 1)
- rev=$(git rev-parse --verify "$1^{commit}") ;;
- *)
- usage ;;
- esac || exit
- bisect_write_bad "$rev"
- echo "git-bisect bad $rev" >>"$GIT_DIR/BISECT_LOG"
+ #
+ # Write new start state.
+ #
+ echo "$start_head" >"$GIT_DIR/BISECT_START" &&
+ sq "$@" >"$GIT_DIR/BISECT_NAMES" &&
+ eval "$eval" &&
+ echo "git bisect start$orig_args" >>"$GIT_DIR/BISECT_LOG" || exit
+ #
+ # Check if we can proceed to the next bisect state.
+ #
bisect_auto_next
+
+ trap '-' 0
}
-bisect_write_bad() {
- rev="$1"
- echo "$rev" >"$GIT_DIR/refs/bisect/bad"
- echo "# bad: "$(git show-branch $rev) >>"$GIT_DIR/BISECT_LOG"
+bisect_write() {
+ state="$1"
+ rev="$2"
+ nolog="$3"
+ case "$state" in
+ bad) tag="$state" ;;
+ good|skip) tag="$state"-"$rev" ;;
+ *) die "Bad bisect_write argument: $state" ;;
+ esac
+ git update-ref "refs/bisect/$tag" "$rev" || exit
+ echo "# $state: $(git show-branch $rev)" >>"$GIT_DIR/BISECT_LOG"
+ test -n "$nolog" || echo "git bisect $state $rev" >>"$GIT_DIR/BISECT_LOG"
}
-bisect_good() {
+bisect_state() {
bisect_autostart
- case "$#" in
- 0) revs=$(git rev-parse --verify HEAD) || exit ;;
- *) revs=$(git rev-parse --revs-only --no-flags "$@") &&
- test '' != "$revs" || die "Bad rev input: $@" ;;
+ state=$1
+ case "$#,$state" in
+ 0,*)
+ die "Please call 'bisect_state' with at least one argument." ;;
+ 1,bad|1,good|1,skip)
+ rev=$(git rev-parse --verify HEAD) ||
+ die "Bad rev input: HEAD"
+ bisect_write "$state" "$rev" ;;
+ 2,bad|*,good|*,skip)
+ shift
+ eval=''
+ for rev in "$@"
+ do
+ sha=$(git rev-parse --verify "$rev^{commit}") ||
+ die "Bad rev input: $rev"
+ eval="$eval bisect_write '$state' '$sha'; "
+ done
+ eval "$eval" ;;
+ *,bad)
+ die "'git bisect bad' can take only one argument." ;;
+ *)
+ usage ;;
esac
- for rev in $revs
- do
- rev=$(git rev-parse --verify "$rev^{commit}") || exit
- bisect_write_good "$rev"
- echo "git-bisect good $rev" >>"$GIT_DIR/BISECT_LOG"
-
- done
bisect_auto_next
}
-bisect_write_good() {
- rev="$1"
- echo "$rev" >"$GIT_DIR/refs/bisect/good-$rev"
- echo "# good: "$(git show-branch $rev) >>"$GIT_DIR/BISECT_LOG"
-}
-
bisect_next_check() {
missing_good= missing_bad=
git show-ref -q --verify refs/bisect/bad || missing_bad=t
;;
*)
THEN=''
- test -d "$GIT_DIR/refs/bisect" || {
+ test -s "$GIT_DIR/BISECT_START" || {
echo >&2 'You need to start by "git bisect start".'
THEN='then '
}
bisect_next_check && bisect_next || :
}
+eval_rev_list() {
+ _eval="$1"
+
+ eval $_eval
+ res=$?
+
+ if [ $res -ne 0 ]; then
+ echo >&2 "'git rev-list --bisect-vars' failed:"
+ echo >&2 "maybe you mistake good and bad revs?"
+ exit $res
+ fi
+
+ return $res
+}
+
+filter_skipped() {
+ _eval="$1"
+ _skip="$2"
+
+ if [ -z "$_skip" ]; then
+ eval_rev_list "$_eval"
+ return
+ fi
+
+ # Let's parse the output of:
+ # "git rev-list --bisect-vars --bisect-all ..."
+ eval_rev_list "$_eval" | while read hash line
+ do
+ case "$VARS,$FOUND,$TRIED,$hash" in
+ # We display some vars.
+ 1,*,*,*) echo "$hash $line" ;;
+
+ # Split line.
+ ,*,*,---*) ;;
+
+ # We had nothing to search.
+ ,,,bisect_rev*)
+ echo "bisect_rev="
+ VARS=1
+ ;;
+
+ # We did not find a good bisect rev.
+ # This should happen only if the "bad"
+ # commit is also a "skip" commit.
+ ,,*,bisect_rev*)
+ echo "bisect_rev=$TRIED"
+ VARS=1
+ ;;
+
+ # We are searching.
+ ,,*,*)
+ TRIED="${TRIED:+$TRIED|}$hash"
+ case "$_skip" in
+ *$hash*) ;;
+ *)
+ echo "bisect_rev=$hash"
+ echo "bisect_tried=\"$TRIED\""
+ FOUND=1
+ ;;
+ esac
+ ;;
+
+ # We have already found a rev to be tested.
+ ,1,*,bisect_rev*) VARS=1 ;;
+ ,1,*,*) ;;
+
+ # ???
+ *) die "filter_skipped error " \
+ "VARS: '$VARS' " \
+ "FOUND: '$FOUND' " \
+ "TRIED: '$TRIED' " \
+ "hash: '$hash' " \
+ "line: '$line'"
+ ;;
+ esac
+ done
+}
+
+exit_if_skipped_commits () {
+ _tried=$1
+ if expr "$_tried" : ".*[|].*" > /dev/null ; then
+ echo "There are only 'skip'ped commit left to test."
+ echo "The first bad commit could be any of:"
+ echo "$_tried" | tr '[|]' '[\012]'
+ echo "We cannot bisect more!"
+ exit 2
+ fi
+}
+
bisect_next() {
- case "$#" in 0) ;; *) usage ;; esac
+ case "$#" in 0) ;; *) usage ;; esac
bisect_autostart
bisect_next_check good
+ skip=$(git for-each-ref --format='%(objectname)' \
+ "refs/bisect/skip-*" | tr '\012' ' ') || exit
+
+ BISECT_OPT=''
+ test -n "$skip" && BISECT_OPT='--bisect-all'
+
bad=$(git rev-parse --verify refs/bisect/bad) &&
good=$(git for-each-ref --format='^%(objectname)' \
- "refs/bisect/good-*" | tr '[\012]' ' ') &&
- eval="git rev-list --bisect-vars $good $bad --" &&
+ "refs/bisect/good-*" | tr '\012' ' ') &&
+ eval="git rev-list --bisect-vars $BISECT_OPT $good $bad --" &&
eval="$eval $(cat "$GIT_DIR/BISECT_NAMES")" &&
- eval=$(eval "$eval") &&
+ eval=$(filter_skipped "$eval" "$skip") &&
eval "$eval" || exit
if [ -z "$bisect_rev" ]; then
exit 1
fi
if [ "$bisect_rev" = "$bad" ]; then
+ exit_if_skipped_commits "$bisect_tried"
echo "$bisect_rev is first bad commit"
git diff-tree --pretty $bisect_rev
exit 0
fi
+ # We should exit here only if the "bad"
+ # commit is also a "skip" commit (see above).
+ exit_if_skipped_commits "$bisect_rev"
+
echo "Bisecting: $bisect_nr revisions left to test after this"
- echo "$bisect_rev" >"$GIT_DIR/refs/heads/new-bisect"
- git checkout -q new-bisect || exit
- mv "$GIT_DIR/refs/heads/new-bisect" "$GIT_DIR/refs/heads/bisect" &&
- GIT_DIR="$GIT_DIR" git symbolic-ref HEAD refs/heads/bisect
+ git checkout -q "$bisect_rev" || exit
git show-branch "$bisect_rev"
}
bisect_visualize() {
bisect_next_check fail
- not=`cd "$GIT_DIR/refs" && echo bisect/good-*`
- eval gitk bisect/bad --not $not -- $(cat "$GIT_DIR/BISECT_NAMES")
+
+ if test $# = 0
+ then
+ case "${DISPLAY+set}${MSYSTEM+set}${SECURITYSESSIONID+set}" in
+ '') set git log ;;
+ set*) set gitk ;;
+ esac
+ else
+ case "$1" in
+ git*|tig) ;;
+ -*) set git log "$@" ;;
+ *) set git "$@" ;;
+ esac
+ fi
+
+ not=$(git for-each-ref --format='%(refname)' "refs/bisect/good-*")
+ eval '"$@"' refs/bisect/bad --not $not -- $(cat "$GIT_DIR/BISECT_NAMES")
}
bisect_reset() {
+ test -s "$GIT_DIR/BISECT_START" || {
+ echo "We are not bisecting."
+ return
+ }
case "$#" in
- 0) if [ -s "$GIT_DIR/head-name" ]; then
- branch=`cat "$GIT_DIR/head-name"`
- else
- branch=master
- fi ;;
- 1) git show-ref --verify --quiet -- "refs/heads/$1" || {
- echo >&2 "$1 does not seem to be a valid branch"
- exit 1
- }
+ 0) branch=$(cat "$GIT_DIR/BISECT_START") ;;
+ 1) git show-ref --verify --quiet -- "refs/heads/$1" ||
+ die "$1 does not seem to be a valid branch"
branch="$1" ;;
- *)
+ *)
usage ;;
esac
- if git checkout "$branch"; then
- rm -f "$GIT_DIR/head-name"
- bisect_clean_state
- fi
+ git checkout "$branch" && bisect_clean_state
}
bisect_clean_state() {
- rm -fr "$GIT_DIR/refs/bisect"
- rm -f "$GIT_DIR/refs/heads/bisect"
- rm -f "$GIT_DIR/BISECT_LOG"
- rm -f "$GIT_DIR/BISECT_NAMES"
- rm -f "$GIT_DIR/BISECT_RUN"
+ # There may be some refs packed during bisection.
+ git for-each-ref --format='%(refname) %(objectname)' refs/bisect/\* |
+ while read ref hash
+ do
+ git update-ref -d $ref $hash || exit
+ done
+ rm -f "$GIT_DIR/BISECT_LOG" &&
+ rm -f "$GIT_DIR/BISECT_NAMES" &&
+ rm -f "$GIT_DIR/BISECT_RUN" &&
+ # Cleanup head-name if it got left by an old version of git-bisect
+ rm -f "$GIT_DIR/head-name" &&
+
+ rm -f "$GIT_DIR/BISECT_START"
}
bisect_replay () {
- test -r "$1" || {
- echo >&2 "cannot read $1 for replaying"
- exit 1
- }
+ test -r "$1" || die "cannot read $1 for replaying"
bisect_reset
- while read bisect command rev
+ while read git bisect command rev
do
- test "$bisect" = "git-bisect" || continue
+ test "$git $bisect" = "git bisect" -o "$git" = "git-bisect" || continue
+ if test "$git" = "git-bisect"; then
+ rev="$command"
+ command="$bisect"
+ fi
case "$command" in
start)
cmd="bisect_start $rev"
- eval "$cmd"
- ;;
- good)
- echo "$rev" >"$GIT_DIR/refs/bisect/good-$rev"
- echo "# good: "$(git show-branch $rev) >>"$GIT_DIR/BISECT_LOG"
- echo "git-bisect good $rev" >>"$GIT_DIR/BISECT_LOG"
- ;;
- bad)
- echo "$rev" >"$GIT_DIR/refs/bisect/bad"
- echo "# bad: "$(git show-branch $rev) >>"$GIT_DIR/BISECT_LOG"
- echo "git-bisect bad $rev" >>"$GIT_DIR/BISECT_LOG"
- ;;
+ eval "$cmd" ;;
+ good|bad|skip)
+ bisect_write "$command" "$rev" ;;
*)
- echo >&2 "?? what are you talking about?"
- exit 1 ;;
+ die "?? what are you talking about?" ;;
esac
done <"$1"
bisect_auto_next
exit $res
fi
- # Use "bisect_good" or "bisect_bad"
- # depending on run success or failure.
- if [ $res -gt 0 ]; then
- next_bisect='bisect_bad'
+ # Find current state depending on run success or failure.
+ # A special exit code of 125 means cannot test.
+ if [ $res -eq 125 ]; then
+ state='skip'
+ elif [ $res -gt 0 ]; then
+ state='bad'
else
- next_bisect='bisect_good'
+ state='good'
fi
- # We have to use a subshell because bisect_good or
- # bisect_bad functions can exit.
- ( $next_bisect > "$GIT_DIR/BISECT_RUN" )
+ # We have to use a subshell because "bisect_state" can exit.
+ ( bisect_state $state > "$GIT_DIR/BISECT_RUN" )
res=$?
cat "$GIT_DIR/BISECT_RUN"
+ if grep "first bad commit could be any of" "$GIT_DIR/BISECT_RUN" \
+ > /dev/null; then
+ echo >&2 "bisect run cannot continue any more"
+ exit $res
+ fi
+
if [ $res -ne 0 ]; then
echo >&2 "bisect run failed:"
- echo >&2 "$next_bisect exited with error code $res"
+ echo >&2 "'bisect_state $state' exited with error code $res"
exit $res
fi
cmd="$1"
shift
case "$cmd" in
+ help)
+ git bisect -h ;;
start)
bisect_start "$@" ;;
- bad)
- bisect_bad "$@" ;;
- good)
- bisect_good "$@" ;;
+ bad|good|skip)
+ bisect_state "$cmd" "$@" ;;
next)
# Not sure we want "next" at the UI level anymore.
bisect_next "$@" ;;
- visualize)
+ visualize|view)
bisect_visualize "$@" ;;
reset)
bisect_reset "$@" ;;