mark <rev>... untestable revisions.
git bisect next
find next bisection to test and check it out.
-git bisect reset [<branch>]
- finish bisection search and go back to branch.
+git bisect reset [<commit>]
+ finish bisection search and go back to commit.
git bisect visualize
show bisect status in gitk.
git bisect replay <logfile>
_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) {
- s/'\''/'\'\\\\\'\''/g;
- print " '\''$_'\''";
- }
- print "\n";
- ' "$@"
-}
-
bisect_autostart() {
test -s "$GIT_DIR/BISECT_START" || {
echo >&2 'You need to start by "git bisect start"'
for arg; do
case "$arg" in --) has_double_dash=1; break ;; esac
done
- orig_args=$(sq "$@")
+ orig_args=$(git rev-parse --sq-quote "$@")
bad_seen=0
eval=''
while [ $# -gt 0 ]; do
# Write new start state.
#
echo "$start_head" >"$GIT_DIR/BISECT_START" &&
- sq "$@" >"$GIT_DIR/BISECT_NAMES" &&
+ git rev-parse --sq-quote "$@" >"$GIT_DIR/BISECT_NAMES" &&
eval "$eval" &&
echo "git bisect start$orig_args" >>"$GIT_DIR/BISECT_LOG" || exit
#
test "$1" = $(cat "$GIT_DIR/BISECT_EXPECTED_REV")
}
-mark_expected_rev() {
- echo "$1" > "$GIT_DIR/BISECT_EXPECTED_REV"
-}
-
check_expected_revs() {
for _rev in "$@"; do
if ! is_expected_rev "$_rev"; then
*..*)
revs=$(git rev-list "$arg") || die "Bad rev input: $arg" ;;
*)
- revs=$(sq "$arg") ;;
+ revs=$(git rev-parse --sq-quote "$arg") ;;
esac
all="$all $revs"
done
bisect_next_check && bisect_next || :
}
-filter_skipped() {
- _eval="$1"
- _skip="$2"
-
- if [ -z "$_skip" ]; then
- eval "$_eval" | {
- while read line
- do
- echo "$line &&"
- done
- echo ':'
- }
- return
- fi
-
- # Let's parse the output of:
- # "git rev-list --bisect-vars --bisect-all ..."
- eval "$_eval" | {
- VARS= FOUND= TRIED=
- while read hash line
- do
- case "$VARS,$FOUND,$TRIED,$hash" in
- 1,*,*,*)
- # "bisect_foo=bar" read from rev-list output.
- echo "$hash &&"
- ;;
- ,*,*,---*)
- # Separator
- ;;
- ,,,bisect_rev*)
- # We had nothing to search.
- echo "bisect_rev= &&"
- VARS=1
- ;;
- ,,*,bisect_rev*)
- # We did not find a good bisect rev.
- # This should happen only if the "bad"
- # commit is also a "skip" commit.
- 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
- ;;
- ,1,*,bisect_rev*)
- # We have already found a rev to be tested.
- VARS=1
- ;;
- ,1,*,*)
- ;;
- *)
- # Unexpected input
- echo "die 'filter_skipped error'"
- die "filter_skipped error " \
- "VARS: '$VARS' " \
- "FOUND: '$FOUND' " \
- "TRIED: '$TRIED' " \
- "hash: '$hash' " \
- "line: '$line'"
- ;;
- esac
- done
- echo ':'
- }
-}
-
-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_checkout() {
- _rev="$1"
- _msg="$2"
- echo "Bisecting: $_msg"
- mark_expected_rev "$_rev"
- git checkout -q "$_rev" -- || exit
- git show-branch "$_rev"
-}
-
-is_among() {
- _rev="$1"
- _list="$2"
- case "$_list" in *$_rev*) return 0 ;; esac
- return 1
-}
-
-handle_bad_merge_base() {
- _badmb="$1"
- _good="$2"
- if is_expected_rev "$_badmb"; then
- cat >&2 <<EOF
-The merge base $_badmb is bad.
-This means the bug has been fixed between $_badmb and [$_good].
-EOF
- exit 3
- else
- cat >&2 <<EOF
-Some good revs are not ancestor of the bad rev.
-git bisect cannot work properly in this case.
-Maybe you mistake good and bad revs?
-EOF
- exit 1
- fi
-}
-
-handle_skipped_merge_base() {
- _mb="$1"
- _bad="$2"
- _good="$3"
- cat >&2 <<EOF
-Warning: the merge base between $_bad and [$_good] must be skipped.
-So we cannot be sure the first bad commit is between $_mb and $_bad.
-We continue anyway.
-EOF
-}
-
-#
-# "check_merge_bases" checks that merge bases are not "bad".
-#
-# - If one is "good", that's good, we have nothing to do.
-# - If one is "bad", it means the user assumed something wrong
-# and we must exit.
-# - If one is "skipped", we can't know but we should warn.
-# - If we don't know, we should check it out and ask the user to test.
-#
-# In the last case we will return 1, and otherwise 0.
-#
-check_merge_bases() {
- _bad="$1"
- _good="$2"
- _skip="$3"
- for _mb in $(git merge-base --all $_bad $_good)
- do
- if is_among "$_mb" "$_good"; then
- continue
- elif test "$_mb" = "$_bad"; then
- handle_bad_merge_base "$_bad" "$_good"
- elif is_among "$_mb" "$_skip"; then
- handle_skipped_merge_base "$_mb" "$_bad" "$_good"
- else
- bisect_checkout "$_mb" "a merge base must be tested"
- return 1
- fi
- done
- return 0
-}
-
-#
-# "check_good_are_ancestors_of_bad" checks that all "good" revs are
-# ancestor of the "bad" rev.
-#
-# If that's not the case, we need to check the merge bases.
-# If a merge base must be tested by the user we return 1 and
-# otherwise 0.
-#
-check_good_are_ancestors_of_bad() {
- test -f "$GIT_DIR/BISECT_ANCESTORS_OK" &&
- return
-
- _bad="$1"
- _good=$(echo $2 | sed -e 's/\^//g')
- _skip="$3"
-
- # Bisecting with no good rev is ok
- test -z "$_good" && return
-
- _side=$(git rev-list $_good ^$_bad)
- if test -n "$_side"; then
- # Return if a checkout was done
- check_merge_bases "$_bad" "$_good" "$_skip" || return
- fi
-
- : > "$GIT_DIR/BISECT_ANCESTORS_OK"
-
- return 0
-}
-
bisect_next() {
case "$#" in 0) ;; *) usage ;; esac
bisect_autostart
bisect_next_check good
- # Get bad, good and skipped revs
- bad=$(git rev-parse --verify refs/bisect/bad) &&
- good=$(git for-each-ref --format='^%(objectname)' \
- "refs/bisect/good-*" | tr '\012' ' ') &&
- skip=$(git for-each-ref --format='%(objectname)' \
- "refs/bisect/skip-*" | tr '\012' ' ') || exit
-
- # Maybe some merge bases must be tested first
- check_good_are_ancestors_of_bad "$bad" "$good" "$skip"
- # Return now if a checkout has already been done
- test "$?" -eq "1" && return
-
- # Get bisection information
- BISECT_OPT=''
- test -n "$skip" && BISECT_OPT='--bisect-all'
- eval="git rev-list --bisect-vars $BISECT_OPT $good $bad --" &&
- eval="$eval $(cat "$GIT_DIR/BISECT_NAMES")" &&
- eval=$(filter_skipped "$eval" "$skip") &&
- eval "$eval" || exit
-
- if [ -z "$bisect_rev" ]; then
- echo "$bad was both good and bad"
- 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 $bisect_rev
- exit 0
- fi
+ # Perform all bisection computation, display and checkout
+ git bisect--helper --next-all
+ res=$?
+
+ # Check if we should exit because bisection is finished
+ test $res -eq 10 && exit 0
- # We should exit here only if the "bad"
- # commit is also a "skip" commit (see above).
- exit_if_skipped_commits "$bisect_rev"
+ # Check for an error in the bisection process
+ test $res -ne 0 && exit $res
- bisect_checkout "$bisect_rev" "$bisect_nr revisions left to test after this (roughly $bisect_steps steps)"
+ return 0
}
bisect_visualize() {
esac
fi
- not=$(git for-each-ref --format='%(refname)' "refs/bisect/good-*")
- eval '"$@"' refs/bisect/bad --not $not -- $(cat "$GIT_DIR/BISECT_NAMES")
+ eval '"$@"' --bisect -- $(cat "$GIT_DIR/BISECT_NAMES")
}
bisect_reset() {
}
case "$#" in
0) branch=$(cat "$GIT_DIR/BISECT_START") ;;
- 1) git show-ref --verify --quiet -- "refs/heads/$1" ||
- die "$1 does not seem to be a valid branch"
+ 1) git rev-parse --quiet --verify "$1^{commit}" > /dev/null ||
+ die "'$1' is not a valid commit"
branch="$1" ;;
*)
usage ;;
cat "$GIT_DIR/BISECT_RUN"
- if grep "first bad commit could be any of" "$GIT_DIR/BISECT_RUN" \
+ if sane_grep "first bad commit could be any of" "$GIT_DIR/BISECT_RUN" \
> /dev/null; then
echo >&2 "bisect run cannot continue any more"
exit $res
exit $res
fi
- if grep "is first bad commit" "$GIT_DIR/BISECT_RUN" > /dev/null; then
+ if sane_grep "is the first bad commit" "$GIT_DIR/BISECT_RUN" > /dev/null; then
echo "bisect run success"
exit 0;
fi