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https://github.com/git/git
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5066a008bb
"git bisect run" that did not specify any command to run used to go ahead and treated all commits to be tested as 'good'. This has been corrected by making the command error out. * sb/bisect-run-empty: bisect run: die if no command is given
628 lines
14 KiB
Bash
Executable file
628 lines
14 KiB
Bash
Executable file
#!/bin/sh
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USAGE='[help|start|bad|good|new|old|terms|skip|next|reset|visualize|view|replay|log|run]'
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LONG_USAGE='git bisect help
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print this long help message.
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git bisect start [--term-{old,good}=<term> --term-{new,bad}=<term>]
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[--no-checkout] [<bad> [<good>...]] [--] [<pathspec>...]
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reset bisect state and start bisection.
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git bisect (bad|new) [<rev>]
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mark <rev> a known-bad revision/
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a revision after change in a given property.
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git bisect (good|old) [<rev>...]
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mark <rev>... known-good revisions/
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revisions before change in a given property.
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git bisect terms [--term-good | --term-bad]
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show the terms used for old and new commits (default: bad, good)
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git bisect skip [(<rev>|<range>)...]
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mark <rev>... untestable revisions.
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git bisect next
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find next bisection to test and check it out.
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git bisect reset [<commit>]
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finish bisection search and go back to commit.
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git bisect (visualize|view)
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show bisect status in gitk.
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git bisect replay <logfile>
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replay bisection log.
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git bisect log
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show bisect log.
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git bisect run <cmd>...
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use <cmd>... to automatically bisect.
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Please use "git help bisect" to get the full man page.'
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OPTIONS_SPEC=
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. git-sh-setup
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_x40='[0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f]'
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_x40="$_x40$_x40$_x40$_x40$_x40$_x40$_x40$_x40"
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TERM_BAD=bad
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TERM_GOOD=good
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bisect_head()
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{
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if test -f "$GIT_DIR/BISECT_HEAD"
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then
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echo BISECT_HEAD
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else
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echo HEAD
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fi
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}
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bisect_autostart() {
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test -s "$GIT_DIR/BISECT_START" || {
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gettextln "You need to start by \"git bisect start\"" >&2
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if test -t 0
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then
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# TRANSLATORS: Make sure to include [Y] and [n] in your
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# translation. The program will only accept English input
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# at this point.
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gettext "Do you want me to do it for you [Y/n]? " >&2
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read yesno
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case "$yesno" in
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[Nn]*)
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exit ;;
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esac
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bisect_start
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else
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exit 1
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fi
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}
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}
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bisect_start() {
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#
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# Check for one bad and then some good revisions.
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#
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has_double_dash=0
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for arg; do
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case "$arg" in --) has_double_dash=1; break ;; esac
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done
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orig_args=$(git rev-parse --sq-quote "$@")
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bad_seen=0
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eval=''
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must_write_terms=0
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revs=''
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if test "z$(git rev-parse --is-bare-repository)" != zfalse
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then
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mode=--no-checkout
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else
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mode=''
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fi
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while [ $# -gt 0 ]; do
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arg="$1"
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case "$arg" in
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--)
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shift
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break
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;;
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--no-checkout)
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mode=--no-checkout
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shift ;;
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--term-good|--term-old)
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shift
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must_write_terms=1
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TERM_GOOD=$1
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shift ;;
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--term-good=*|--term-old=*)
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must_write_terms=1
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TERM_GOOD=${1#*=}
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shift ;;
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--term-bad|--term-new)
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shift
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must_write_terms=1
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TERM_BAD=$1
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shift ;;
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--term-bad=*|--term-new=*)
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must_write_terms=1
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TERM_BAD=${1#*=}
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shift ;;
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--*)
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die "$(eval_gettext "unrecognised option: '\$arg'")" ;;
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*)
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rev=$(git rev-parse -q --verify "$arg^{commit}") || {
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test $has_double_dash -eq 1 &&
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die "$(eval_gettext "'\$arg' does not appear to be a valid revision")"
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break
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}
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revs="$revs $rev"
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shift
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;;
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esac
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done
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for rev in $revs
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do
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# The user ran "git bisect start <sha1>
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# <sha1>", hence did not explicitly specify
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# the terms, but we are already starting to
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# set references named with the default terms,
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# and won't be able to change afterwards.
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must_write_terms=1
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case $bad_seen in
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0) state=$TERM_BAD ; bad_seen=1 ;;
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*) state=$TERM_GOOD ;;
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esac
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eval="$eval bisect_write '$state' '$rev' 'nolog' &&"
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done
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#
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# Verify HEAD.
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#
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head=$(GIT_DIR="$GIT_DIR" git symbolic-ref -q HEAD) ||
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head=$(GIT_DIR="$GIT_DIR" git rev-parse --verify HEAD) ||
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die "$(gettext "Bad HEAD - I need a HEAD")"
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#
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# Check if we are bisecting.
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#
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start_head=''
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if test -s "$GIT_DIR/BISECT_START"
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then
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# Reset to the rev from where we started.
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start_head=$(cat "$GIT_DIR/BISECT_START")
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if test "z$mode" != "z--no-checkout"
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then
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git checkout "$start_head" -- ||
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die "$(eval_gettext "Checking out '\$start_head' failed. Try 'git bisect reset <valid-branch>'.")"
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fi
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else
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# Get rev from where we start.
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case "$head" in
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refs/heads/*|$_x40)
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# This error message should only be triggered by
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# cogito usage, and cogito users should understand
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# it relates to cg-seek.
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[ -s "$GIT_DIR/head-name" ] &&
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die "$(gettext "won't bisect on cg-seek'ed tree")"
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start_head="${head#refs/heads/}"
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;;
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*)
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die "$(gettext "Bad HEAD - strange symbolic ref")"
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;;
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esac
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fi
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#
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# Get rid of any old bisect state.
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#
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git bisect--helper --bisect-clean-state || exit
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#
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# Change state.
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# In case of mistaken revs or checkout error, or signals received,
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# "bisect_auto_next" below may exit or misbehave.
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# We have to trap this to be able to clean up using
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# "bisect_clean_state".
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#
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trap 'git bisect--helper --bisect-clean-state' 0
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trap 'exit 255' 1 2 3 15
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#
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# Write new start state.
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#
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echo "$start_head" >"$GIT_DIR/BISECT_START" && {
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test "z$mode" != "z--no-checkout" ||
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git update-ref --no-deref BISECT_HEAD "$start_head"
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} &&
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git rev-parse --sq-quote "$@" >"$GIT_DIR/BISECT_NAMES" &&
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eval "$eval true" &&
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if test $must_write_terms -eq 1
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then
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git bisect--helper --write-terms "$TERM_BAD" "$TERM_GOOD" || exit
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fi &&
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echo "git bisect start$orig_args" >>"$GIT_DIR/BISECT_LOG" || exit
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#
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# Check if we can proceed to the next bisect state.
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#
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bisect_auto_next
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trap '-' 0
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}
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bisect_write() {
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state="$1"
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rev="$2"
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nolog="$3"
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case "$state" in
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"$TERM_BAD")
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tag="$state" ;;
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"$TERM_GOOD"|skip)
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tag="$state"-"$rev" ;;
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*)
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die "$(eval_gettext "Bad bisect_write argument: \$state")" ;;
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esac
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git update-ref "refs/bisect/$tag" "$rev" || exit
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echo "# $state: $(git show-branch $rev)" >>"$GIT_DIR/BISECT_LOG"
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test -n "$nolog" || echo "git bisect $state $rev" >>"$GIT_DIR/BISECT_LOG"
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}
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bisect_skip() {
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all=''
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for arg in "$@"
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do
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case "$arg" in
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*..*)
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revs=$(git rev-list "$arg") || die "$(eval_gettext "Bad rev input: \$arg")" ;;
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*)
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revs=$(git rev-parse --sq-quote "$arg") ;;
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esac
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all="$all $revs"
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done
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eval bisect_state 'skip' $all
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}
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bisect_state() {
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bisect_autostart
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state=$1
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check_and_set_terms $state
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case "$#,$state" in
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0,*)
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die "Please call 'bisect_state' with at least one argument." ;;
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1,"$TERM_BAD"|1,"$TERM_GOOD"|1,skip)
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bisected_head=$(bisect_head)
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rev=$(git rev-parse --verify "$bisected_head") ||
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die "$(eval_gettext "Bad rev input: \$bisected_head")"
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bisect_write "$state" "$rev"
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git bisect--helper --check-expected-revs "$rev" ;;
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2,"$TERM_BAD"|*,"$TERM_GOOD"|*,skip)
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shift
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hash_list=''
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for rev in "$@"
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do
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sha=$(git rev-parse --verify "$rev^{commit}") ||
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die "$(eval_gettext "Bad rev input: \$rev")"
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hash_list="$hash_list $sha"
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done
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for rev in $hash_list
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do
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bisect_write "$state" "$rev"
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done
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git bisect--helper --check-expected-revs $hash_list ;;
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*,"$TERM_BAD")
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die "$(eval_gettext "'git bisect \$TERM_BAD' can take only one argument.")" ;;
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*)
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usage ;;
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esac
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bisect_auto_next
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}
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bisect_next_check() {
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missing_good= missing_bad=
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git show-ref -q --verify refs/bisect/$TERM_BAD || missing_bad=t
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test -n "$(git for-each-ref "refs/bisect/$TERM_GOOD-*")" || missing_good=t
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case "$missing_good,$missing_bad,$1" in
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,,*)
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: have both $TERM_GOOD and $TERM_BAD - ok
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;;
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*,)
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# do not have both but not asked to fail - just report.
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false
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;;
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t,,"$TERM_GOOD")
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# have bad (or new) but not good (or old). we could bisect although
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# this is less optimum.
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eval_gettextln "Warning: bisecting only with a \$TERM_BAD commit." >&2
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if test -t 0
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then
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# TRANSLATORS: Make sure to include [Y] and [n] in your
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# translation. The program will only accept English input
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# at this point.
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gettext "Are you sure [Y/n]? " >&2
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read yesno
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case "$yesno" in [Nn]*) exit 1 ;; esac
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fi
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: bisect without $TERM_GOOD...
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;;
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*)
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bad_syn=$(bisect_voc bad)
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good_syn=$(bisect_voc good)
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if test -s "$GIT_DIR/BISECT_START"
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then
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eval_gettextln "You need to give me at least one \$bad_syn and one \$good_syn revision.
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(You can use \"git bisect \$bad_syn\" and \"git bisect \$good_syn\" for that.)" >&2
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else
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eval_gettextln "You need to start by \"git bisect start\".
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You then need to give me at least one \$good_syn and one \$bad_syn revision.
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(You can use \"git bisect \$bad_syn\" and \"git bisect \$good_syn\" for that.)" >&2
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fi
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exit 1 ;;
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esac
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}
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bisect_auto_next() {
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bisect_next_check && bisect_next || :
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}
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bisect_next() {
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case "$#" in 0) ;; *) usage ;; esac
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bisect_autostart
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bisect_next_check $TERM_GOOD
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# Perform all bisection computation, display and checkout
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git bisect--helper --next-all $(test -f "$GIT_DIR/BISECT_HEAD" && echo --no-checkout)
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res=$?
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# Check if we should exit because bisection is finished
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if test $res -eq 10
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then
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bad_rev=$(git show-ref --hash --verify refs/bisect/$TERM_BAD)
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bad_commit=$(git show-branch $bad_rev)
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echo "# first $TERM_BAD commit: $bad_commit" >>"$GIT_DIR/BISECT_LOG"
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exit 0
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elif test $res -eq 2
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then
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echo "# only skipped commits left to test" >>"$GIT_DIR/BISECT_LOG"
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good_revs=$(git for-each-ref --format="%(objectname)" "refs/bisect/$TERM_GOOD-*")
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for skipped in $(git rev-list refs/bisect/$TERM_BAD --not $good_revs)
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do
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skipped_commit=$(git show-branch $skipped)
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echo "# possible first $TERM_BAD commit: $skipped_commit" >>"$GIT_DIR/BISECT_LOG"
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done
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exit $res
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fi
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# Check for an error in the bisection process
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test $res -ne 0 && exit $res
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return 0
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}
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bisect_visualize() {
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bisect_next_check fail
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if test $# = 0
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then
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if test -n "${DISPLAY+set}${SESSIONNAME+set}${MSYSTEM+set}${SECURITYSESSIONID+set}" &&
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type gitk >/dev/null 2>&1
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then
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set gitk
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else
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set git log
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fi
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else
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case "$1" in
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git*|tig) ;;
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-*) set git log "$@" ;;
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*) set git "$@" ;;
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esac
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fi
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eval '"$@"' --bisect -- $(cat "$GIT_DIR/BISECT_NAMES")
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}
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bisect_reset() {
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test -s "$GIT_DIR/BISECT_START" || {
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gettextln "We are not bisecting."
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return
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}
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case "$#" in
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0) branch=$(cat "$GIT_DIR/BISECT_START") ;;
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1) git rev-parse --quiet --verify "$1^{commit}" >/dev/null || {
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invalid="$1"
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die "$(eval_gettext "'\$invalid' is not a valid commit")"
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}
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branch="$1" ;;
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*)
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usage ;;
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esac
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if ! test -f "$GIT_DIR/BISECT_HEAD" && ! git checkout "$branch" --
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then
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die "$(eval_gettext "Could not check out original HEAD '\$branch'.
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Try 'git bisect reset <commit>'.")"
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fi
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git bisect--helper --bisect-clean-state || exit
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}
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bisect_replay () {
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file="$1"
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test "$#" -eq 1 || die "$(gettext "No logfile given")"
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test -r "$file" || die "$(eval_gettext "cannot read \$file for replaying")"
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bisect_reset
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while read git bisect command rev
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do
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test "$git $bisect" = "git bisect" || test "$git" = "git-bisect" || continue
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if test "$git" = "git-bisect"
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then
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rev="$command"
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command="$bisect"
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fi
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get_terms
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check_and_set_terms "$command"
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case "$command" in
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start)
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cmd="bisect_start $rev"
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eval "$cmd" ;;
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"$TERM_GOOD"|"$TERM_BAD"|skip)
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bisect_write "$command" "$rev" ;;
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terms)
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bisect_terms $rev ;;
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*)
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die "$(gettext "?? what are you talking about?")" ;;
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esac
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done <"$file"
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bisect_auto_next
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}
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bisect_run () {
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bisect_next_check fail
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test -n "$*" || die "$(gettext "bisect run failed: no command provided.")"
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while true
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do
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command="$@"
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eval_gettextln "running \$command"
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"$@"
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res=$?
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# Check for really bad run error.
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if [ $res -lt 0 -o $res -ge 128 ]
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then
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eval_gettextln "bisect run failed:
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exit code \$res from '\$command' is < 0 or >= 128" >&2
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exit $res
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fi
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# Find current state depending on run success or failure.
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# A special exit code of 125 means cannot test.
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if [ $res -eq 125 ]
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then
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state='skip'
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elif [ $res -gt 0 ]
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then
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state="$TERM_BAD"
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else
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state="$TERM_GOOD"
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fi
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# We have to use a subshell because "bisect_state" can exit.
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( bisect_state $state >"$GIT_DIR/BISECT_RUN" )
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res=$?
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cat "$GIT_DIR/BISECT_RUN"
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if sane_grep "first $TERM_BAD commit could be any of" "$GIT_DIR/BISECT_RUN" \
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>/dev/null
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then
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gettextln "bisect run cannot continue any more" >&2
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exit $res
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fi
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if [ $res -ne 0 ]
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then
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eval_gettextln "bisect run failed:
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'bisect_state \$state' exited with error code \$res" >&2
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exit $res
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fi
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if sane_grep "is the first $TERM_BAD commit" "$GIT_DIR/BISECT_RUN" >/dev/null
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then
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gettextln "bisect run success"
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exit 0;
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fi
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done
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}
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bisect_log () {
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test -s "$GIT_DIR/BISECT_LOG" || die "$(gettext "We are not bisecting.")"
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cat "$GIT_DIR/BISECT_LOG"
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}
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get_terms () {
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if test -s "$GIT_DIR/BISECT_TERMS"
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then
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{
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|
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
|