- #
- # 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 "$@")
- bad_seen=0
- eval=''
- if test "z$(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 ;;
- --*)
- 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
- }
- case $bad_seen in
- 0) state='bad' ; bad_seen=1 ;;
- *) state='good' ;;
- esac
- eval="$eval bisect_write '$state' '$rev' 'nolog' &&"
- shift
- ;;
- esac
- 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 "$(eval_gettext "Checking out '\$start_head' failed. Try 'git bisect reset <validbranch>'.")"
- fi
- else
- # Get rev from where we start.
- case "$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 "$(gettext "won't bisect on seeked tree")"
- start_head="${head#refs/heads/}"
- ;;
- *)
- die "$(gettext "Bad HEAD - strange symbolic ref")"
- ;;
- esac
- fi
-
- #
- # Get rid of any old bisect state.
- #
- bisect_clean_state || exit