/snap/gh/502/usr/lib/git-core
Edit: /snap/gh/502/usr/lib/git-core/git-bisect (14444B)
#!/bin/sh
USAGE='[help|start|bad|good|new|old|terms|skip|next|reset|visualize|view|replay|log|run]'
LONG_USAGE='git bisect help
print this long help message.
git bisect start [--term-{old,good}=
--term-{new,bad}=]
[--no-checkout] [ [...]] [--] [...]
reset bisect state and start bisection.
git bisect (bad|new) []
mark a known-bad revision/
a revision after change in a given property.
git bisect (good|old) [...]
mark ... known-good revisions/
revisions before change in a given property.
git bisect terms [--term-good | --term-bad]
show the terms used for old and new commits (default: bad, good)
git bisect skip [(|)...]
mark ... untestable revisions.
git bisect next
find next bisection to test and check it out.
git bisect reset []
finish bisection search and go back to commit.
git bisect (visualize|view)
show bisect status in gitk.
git bisect replay
replay bisection log.
git bisect log
show bisect log.
git bisect run ...
use ... to automatically bisect.
Please use "git help bisect" to get the full man page.'
OPTIONS_SPEC=
. git-sh-setup
_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"
TERM_BAD=bad
TERM_GOOD=good
bisect_head()
{
if test -f "$GIT_DIR/BISECT_HEAD"
then
echo BISECT_HEAD
else
echo HEAD
fi
}
bisect_autostart() {
test -s "$GIT_DIR/BISECT_START" || {
gettextln "You need to start by \"git bisect start\"" >&2
if test -t 0
then
# TRANSLATORS: Make sure to include [Y] and [n] in your
# translation. The program will only accept English input
# at this point.
gettext "Do you want me to do it for you [Y/n]? " >&2
read yesno
case "$yesno" in
[Nn]*)
exit ;;
esac
bisect_start
else
exit 1
fi
}
}
bisect_start() {
#
# Check for one bad and then some good revisions.
#
has_double_dash=0
for arg; do
case "$arg" in --) has_double_dash=1; break ;; esac
done
orig_args=$(git rev-parse --sq-quote "$@")
bad_seen=0
eval=''
must_write_terms=0
revs=''
if test "z$(git rev-parse --is-bare-repository)" != zfalse
then
mode=--no-checkout
else
mode=''
fi
while [ $# -gt 0 ]; do
arg="$1"
case "$arg" in
--)
shift
break
;;
--no-checkout)
mode=--no-checkout
shift ;;
--term-good|--term-old)
shift
must_write_terms=1
TERM_GOOD=$1
shift ;;
--term-good=*|--term-old=*)
must_write_terms=1
TERM_GOOD=${1#*=}
shift ;;
--term-bad|--term-new)
shift
must_write_terms=1
TERM_BAD=$1
shift ;;
--term-bad=*|--term-new=*)
must_write_terms=1
TERM_BAD=${1#*=}
shift ;;
--*)
die "$(eval_gettext "unrecognised option: '\$arg'")" ;;
*)
rev=$(git rev-parse -q --verify "$arg^{commit}") || {
test $has_double_dash -eq 1 &&
die "$(eval_gettext "'\$arg' does not appear to be a valid revision")"
break
}
revs="$revs $rev"
shift
;;
esac
done
for rev in $revs
do
# The user ran "git bisect start
# ", hence did not explicitly specify
# the terms, but we are already starting to
# set references named with the default terms,
# and won't be able to change afterwards.
must_write_terms=1
case $bad_seen in
0) state=$TERM_BAD ; bad_seen=1 ;;
*) state=$TERM_GOOD ;;
esac
eval="$eval bisect_write '$state' '$rev' 'nolog' &&"
done
#
# Verify HEAD.
#
head=$(GIT_DIR="$GIT_DIR" git symbolic-ref -q HEAD) ||
head=$(GIT_DIR="$GIT_DIR" git rev-parse --verify HEAD) ||
die "$(gettext "Bad HEAD - I need a HEAD")"
#
# Check if we are bisecting.
#
start_head=''
if test -s "$GIT_DIR/BISECT_START"
then
# Reset to the rev from where we started.
start_head=$(cat "$GIT_DIR/BISECT_START")
if test "z$mode" != "z--no-checkout"
then
git checkout "$start_head" -- ||
die "$(eval_gettext "Checking out '\$start_head' failed. Try 'git bisect reset '.")"
fi
else
# Get rev from where we start.
case "$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 "$(gettext "won't bisect on cg-seek'ed tree")"
start_head="${head#refs/heads/}"
;;
*)
die "$(gettext "Bad HEAD - strange symbolic ref")"
;;
esac
fi
#
# Get rid of any old bisect state.
#
git bisect--helper --bisect-clean-state || exit
#
# Change state.
# In case of mistaken revs or checkout error, or signals received,
# "bisect_auto_next" below may exit or misbehave.
# We have to trap this to be able to clean up using
# "bisect_clean_state".
#
trap 'git bisect--helper --bisect-clean-state' 0
trap 'exit 255' 1 2 3 15
#
# Write new start state.
#
echo "$start_head" >"$GIT_DIR/BISECT_START" && {
test "z$mode" != "z--no-checkout" ||
git update-ref --no-deref BISECT_HEAD "$start_head"
} &&
git rev-parse --sq-quote "$@" >"$GIT_DIR/BISECT_NAMES" &&
eval "$eval true" &&
if test $must_write_terms -eq 1
then
git bisect--helper --write-terms "$TERM_BAD" "$TERM_GOOD" || exit
fi &&
echo "git bisect start$orig_args" >>"$GIT_DIR/BISECT_LOG" || exit
#
# Check if we can proceed to the next bisect state.
#
bisect_auto_next
trap '-' 0
}
bisect_write() {
state="$1"
rev="$2"
nolog="$3"
case "$state" in
"$TERM_BAD")
tag="$state" ;;
"$TERM_GOOD"|skip)
tag="$state"-"$rev" ;;
*)
die "$(eval_gettext "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_skip() {
all=''
for arg in "$@"
do
case "$arg" in
*..*)
revs=$(git rev-list "$arg") || die "$(eval_gettext "Bad rev input: \$arg")" ;;
*)
revs=$(git rev-parse --sq-quote "$arg") ;;
esac
all="$all $revs"
done
eval bisect_state 'skip' $all
}
bisect_state() {
bisect_autostart
state=$1
check_and_set_terms $state
case "$#,$state" in
0,*)
die "Please call 'bisect_state' with at least one argument." ;;
1,"$TERM_BAD"|1,"$TERM_GOOD"|1,skip)
bisected_head=$(bisect_head)
rev=$(git rev-parse --verify "$bisected_head") ||
die "$(eval_gettext "Bad rev input: \$bisected_head")"
bisect_write "$state" "$rev"
git bisect--helper --check-expected-revs "$rev" ;;
2,"$TERM_BAD"|*,"$TERM_GOOD"|*,skip)
shift
hash_list=''
for rev in "$@"
do
sha=$(git rev-parse --verify "$rev^{commit}") ||
die "$(eval_gettext "Bad rev input: \$rev")"
hash_list="$hash_list $sha"
done
for rev in $hash_list
do
bisect_write "$state" "$rev"
done
git bisect--helper --check-expected-revs $hash_list ;;
*,"$TERM_BAD")
die "$(eval_gettext "'git bisect \$TERM_BAD' can take only one argument.")" ;;
*)
usage ;;
esac
bisect_auto_next
}
bisect_next_check() {
missing_good= missing_bad=
git show-ref -q --verify refs/bisect/$TERM_BAD || missing_bad=t
test -n "$(git for-each-ref "refs/bisect/$TERM_GOOD-*")" || missing_good=t
case "$missing_good,$missing_bad,$1" in
,,*)
: have both $TERM_GOOD and $TERM_BAD - ok
;;
*,)
# do not have both but not asked to fail - just report.
false
;;
t,,"$TERM_GOOD")
# have bad (or new) but not good (or old). we could bisect although
# this is less optimum.
eval_gettextln "Warning: bisecting only with a \$TERM_BAD commit." >&2
if test -t 0
then
# TRANSLATORS: Make sure to include [Y] and [n] in your
# translation. The program will only accept English input
# at this point.
gettext "Are you sure [Y/n]? " >&2
read yesno
case "$yesno" in [Nn]*) exit 1 ;; esac
fi
: bisect without $TERM_GOOD...
;;
*)
bad_syn=$(bisect_voc bad)
good_syn=$(bisect_voc good)
if test -s "$GIT_DIR/BISECT_START"
then
eval_gettextln "You need to give me at least one \$bad_syn and one \$good_syn revision.
(You can use \"git bisect \$bad_syn\" and \"git bisect \$good_syn\" for that.)" >&2
else
eval_gettextln "You need to start by \"git bisect start\".
You then need to give me at least one \$good_syn and one \$bad_syn revision.
(You can use \"git bisect \$bad_syn\" and \"git bisect \$good_syn\" for that.)" >&2
fi
exit 1 ;;
esac
}
bisect_auto_next() {
bisect_next_check && bisect_next || :
}
bisect_next() {
case "$#" in 0) ;; *) usage ;; esac
bisect_autostart
bisect_next_check $TERM_GOOD
# Perform all bisection computation, display and checkout
git bisect--helper --next-all $(test -f "$GIT_DIR/BISECT_HEAD" && echo --no-checkout)
res=$?
# Check if we should exit because bisection is finished
if test $res -eq 10
then
bad_rev=$(git show-ref --hash --verify refs/bisect/$TERM_BAD)
bad_commit=$(git show-branch $bad_rev)
echo "# first $TERM_BAD commit: $bad_commit" >>"$GIT_DIR/BISECT_LOG"
exit 0
elif test $res -eq 2
then
echo "# only skipped commits left to test" >>"$GIT_DIR/BISECT_LOG"
good_revs=$(git for-each-ref --format="%(objectname)" "refs/bisect/$TERM_GOOD-*")
for skipped in $(git rev-list refs/bisect/$TERM_BAD --not $good_revs)
do
skipped_commit=$(git show-branch $skipped)
echo "# possible first $TERM_BAD commit: $skipped_commit" >>"$GIT_DIR/BISECT_LOG"
done
exit $res
fi
# Check for an error in the bisection process
test $res -ne 0 && exit $res
return 0
}
bisect_visualize() {
bisect_next_check fail
if test $# = 0
then
if test -n "${DISPLAY+set}${SESSIONNAME+set}${MSYSTEM+set}${SECURITYSESSIONID+set}" &&
type gitk >/dev/null 2>&1
then
set gitk
else
set git log
fi
else
case "$1" in
git*|tig) ;;
-*) set git log "$@" ;;
*) set git "$@" ;;
esac
fi
eval '"$@"' --bisect -- $(cat "$GIT_DIR/BISECT_NAMES")
}
bisect_reset() {
test -s "$GIT_DIR/BISECT_START" || {
gettextln "We are not bisecting."
return
}
case "$#" in
0) branch=$(cat "$GIT_DIR/BISECT_START") ;;
1) git rev-parse --quiet --verify "$1^{commit}" >/dev/null || {
invalid="$1"
die "$(eval_gettext "'\$invalid' is not a valid commit")"
}
branch="$1" ;;
*)
usage ;;
esac
if ! test -f "$GIT_DIR/BISECT_HEAD" && ! git checkout "$branch" --
then
die "$(eval_gettext "Could not check out original HEAD '\$branch'.
Try 'git bisect reset '.")"
fi
git bisect--helper --bisect-clean-state || exit
}
bisect_replay () {
file="$1"
test "$#" -eq 1 || die "$(gettext "No logfile given")"
test -r "$file" || die "$(eval_gettext "cannot read \$file for replaying")"
bisect_reset
while read git bisect command rev
do
test "$git $bisect" = "git bisect" || test "$git" = "git-bisect" || continue
if test "$git" = "git-bisect"
then
rev="$command"
command="$bisect"
fi
get_terms
check_and_set_terms "$command"
case "$command" in
start)
cmd="bisect_start $rev"
eval "$cmd" ;;
"$TERM_GOOD"|"$TERM_BAD"|skip)
bisect_write "$command" "$rev" ;;
terms)
bisect_terms $rev ;;
*)
die "$(gettext "?? what are you talking about?")" ;;
esac
done <"$file"
bisect_auto_next
}
bisect_run () {
bisect_next_check fail
test -n "$*" || die "$(gettext "bisect run failed: no command provided.")"
while true
do
command="$@"
eval_gettextln "running \$command"
"$@"
res=$?
# Check for really bad run error.
if [ $res -lt 0 -o $res -ge 128 ]
then
eval_gettextln "bisect run failed:
exit code \$res from '\$command' is < 0 or >= 128" >&2
exit $res
fi
# 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 [ $res -gt 0 ]
then
state="$TERM_BAD"
else
state="$TERM_GOOD"
fi
# 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 sane_grep "first $TERM_BAD commit could be any of" "$GIT_DIR/BISECT_RUN" \
>/dev/null
then
gettextln "bisect run cannot continue any more" >&2
exit $res
fi
if [ $res -ne 0 ]
then
eval_gettextln "bisect run failed:
'bisect_state \$state' exited with error code \$res" >&2
exit $res
fi
if sane_grep "is the first $TERM_BAD commit" "$GIT_DIR/BISECT_RUN" >/dev/null
then
gettextln "bisect run success"
exit 0;
fi
done
}
bisect_log () {
test -s "$GIT_DIR/BISECT_LOG" || die "$(gettext "We are not bisecting.")"
cat "$GIT_DIR/BISECT_LOG"
}
get_terms () {
if test -s "$GIT_DIR/BISECT_TERMS"
then
{
read TERM_BAD
read TERM_GOOD
} <"$GIT_DIR/BISECT_TERMS"
fi
}
check_and_set_terms () {
cmd="$1"
case "$cmd" in
skip|start|terms) ;;
*)
if test -s "$GIT_DIR/BISECT_TERMS" && test "$cmd" != "$TERM_BAD" && test "$cmd" != "$TERM_GOOD"
then
die "$(eval_gettext "Invalid command: you're currently in a \$TERM_BAD/\$TERM_GOOD bisect.")"
fi
case "$cmd" in
bad|good)
if ! test -s "$GIT_DIR/BISECT_TERMS"
then
TERM_BAD=bad
TERM_GOOD=good
git bisect--helper --write-terms "$TERM_BAD" "$TERM_GOOD" || exit
fi
;;
new|old)
if ! test -s "$GIT_DIR/BISECT_TERMS"
then
TERM_BAD=new
TERM_GOOD=old
git bisect--helper --write-terms "$TERM_BAD" "$TERM_GOOD" || exit
fi
;;
esac ;;
esac
}
bisect_voc () {
case "$1" in
bad) echo "bad|new" ;;
good) echo "good|old" ;;
esac
}
bisect_terms () {
get_terms
if ! test -s "$GIT_DIR/BISECT_TERMS"
then
die "$(gettext "no terms defined")"
fi
case "$#" in
0)
gettextln "Your current terms are $TERM_GOOD for the old state
and $TERM_BAD for the new state."
;;
1)
arg=$1
case "$arg" in
--term-good|--term-old)
printf '%s\n' "$TERM_GOOD"
;;
--term-bad|--term-new)
printf '%s\n' "$TERM_BAD"
;;
*)
die "$(eval_gettext "invalid argument \$arg for 'git bisect terms'.
Supported options are: --term-good|--term-old and --term-bad|--term-new.")"
;;
esac
;;
*)
usage ;;
esac
}
case "$#" in
0)
usage ;;
*)
cmd="$1"
get_terms
shift
case "$cmd" in
help)
git bisect -h ;;
start)
bisect_start "$@" ;;
bad|good|new|old|"$TERM_BAD"|"$TERM_GOOD")
bisect_state "$cmd" "$@" ;;
skip)
bisect_skip "$@" ;;
next)
# Not sure we want "next" at the UI level anymore.
bisect_next "$@" ;;
visualize|view)
bisect_visualize "$@" ;;
reset)
bisect_reset "$@" ;;
replay)
bisect_replay "$@" ;;
log)
bisect_log ;;
run)
bisect_run "$@" ;;
terms)
bisect_terms "$@" ;;
*)
usage ;;
esac
esac