add boolean diff.suppress-blank-empty config option

[git.git] / git-bisect.sh

diff --git a/git-bisect.sh b/git-bisect.sh
index 4bcbaceb8bd6a5dc9021b2525f43ae5317a7d46a..97ac600873ebd0dff6310071343403a41a867b8a 100755 (executable)
--- a/git-bisect.sh
+++ b/git-bisect.sh
@@ -44,7 +44,7 @@ sq() {
 }
 
 bisect_autostart() {
-       test -f "$GIT_DIR/BISECT_NAMES" || {
+       test -s "$GIT_DIR/BISECT_START" || {
                echo >&2 'You need to start by "git bisect start"'
                if test -t 0
                then
@@ -98,7 +98,7 @@ bisect_start() {
        #
        # Get rid of any old bisect state.
        #
-       bisect_clean_state
+       bisect_clean_state || exit
 
        #
        # Check for one bad and then some good revisions.
@@ -146,10 +146,10 @@ bisect_start() {
        #
        # Write new start state.
        #
-       sq "$@" >"$GIT_DIR/BISECT_NAMES" &&
        echo "$start_head" >"$GIT_DIR/BISECT_START" &&
+       sq "$@" >"$GIT_DIR/BISECT_NAMES" &&
        eval "$eval" &&
-       echo "git-bisect start$orig_args" >>"$GIT_DIR/BISECT_LOG" || exit
+       echo "git bisect start$orig_args" >>"$GIT_DIR/BISECT_LOG" || exit
        #
        # Check if we can proceed to the next bisect state.
        #
@@ -169,7 +169,7 @@ bisect_write() {
        esac
        git update-ref "refs/bisect/$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"
+       test -n "$nolog" || echo "git bisect $state $rev" >>"$GIT_DIR/BISECT_LOG"
 }
 
 bisect_state() {
@@ -220,13 +220,14 @@ bisect_next_check() {
                if test -t 0
                then
                        printf >&2 'Are you sure [Y/n]? '
-                       case "$(read yesno)" in [Nn]*) exit 1 ;; esac
+                       read yesno
+                       case "$yesno" in [Nn]*) exit 1 ;; esac
                fi
                : bisect without good...
                ;;
        *)
                THEN=''
-               test -f "$GIT_DIR/BISECT_NAMES" || {
+               test -s "$GIT_DIR/BISECT_START" || {
                        echo >&2 'You need to start by "git bisect start".'
                        THEN='then '
                }
@@ -392,16 +393,12 @@ bisect_visualize() {
 }
 
 bisect_reset() {
-       test -f "$GIT_DIR/BISECT_NAMES" || {
+       test -s "$GIT_DIR/BISECT_START" || {
                echo "We are not bisecting."
                return
        }
        case "$#" in
-       0) if [ -s "$GIT_DIR/BISECT_START" ]; then
-              branch=`cat "$GIT_DIR/BISECT_START"`
-          else
-              branch=master
-          fi ;;
+       0) branch=$(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" ;;
@@ -416,22 +413,27 @@ bisect_clean_state() {
        git for-each-ref --format='%(refname) %(objectname)' refs/bisect/\* |
        while read ref hash
        do
-               git update-ref -d $ref $hash
+               git update-ref -d $ref $hash || exit
        done
-       rm -f "$GIT_DIR/BISECT_START"
-       rm -f "$GIT_DIR/BISECT_LOG"
-       rm -f "$GIT_DIR/BISECT_NAMES"
-       rm -f "$GIT_DIR/BISECT_RUN"
+       rm -f "$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/head-name" &&
+
+       rm -f "$GIT_DIR/BISECT_START"
 }
 
 bisect_replay () {
        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"