merge, pull: introduce '--(no-)stat' option

diff --git a/git-bisect.sh b/git-bisect.sh
index 5385249890698632dedcaf8dda03d865f66abca9..408775a51e2ad7b3007ea8a0001516c26166318a 100755 (executable)
--- a/git-bisect.sh
+++ b/git-bisect.sh
@@ -1,7 +1,9 @@
 #!/bin/sh
 
-USAGE='[start|bad|good|skip|next|reset|visualize|replay|log|run]'
-LONG_USAGE='git bisect start [<bad> [<good>...]] [--] [<pathspec>...]
+USAGE='[help|start|bad|good|skip|next|reset|visualize|replay|log|run]'
+LONG_USAGE='git bisect help
+        print this long help message.
+git bisect start [<bad> [<good>...]] [--] [<pathspec>...]
         reset bisect state and start bisection.
 git bisect bad [<rev>]
         mark <rev> a known-bad revision.
@@ -20,12 +22,17 @@ git bisect replay <logfile>
 git bisect log
         show bisect log.
 git bisect run <cmd>...
-        use <cmd>... to automatically bisect.'
+        use <cmd>... to automatically bisect.
+
+Please use "git help bisect" to get the full man page.'
 
 OPTIONS_SPEC=
 . git-sh-setup
 require_work_tree
 
+_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) {
@@ -60,19 +67,22 @@ bisect_start() {
        # top-of-line master first!
        #
        head=$(GIT_DIR="$GIT_DIR" git symbolic-ref HEAD) ||
-       die "Bad HEAD - I need a symbolic ref"
+       head=$(GIT_DIR="$GIT_DIR" git rev-parse --verify HEAD) ||
+       die "Bad HEAD - I need a HEAD"
        case "$head" in
        refs/heads/bisect)
-               if [ -s "$GIT_DIR/head-name" ]; then
-                   branch=`cat "$GIT_DIR/head-name"`
+               if [ -s "$GIT_DIR/BISECT_START" ]; then
+                   branch=`cat "$GIT_DIR/BISECT_START"`
                else
                    branch=master
                fi
                git checkout $branch || exit
                ;;
-       refs/heads/*)
+       refs/heads/*|$_x40)
+               # This error message should only be triggered by cogito usage,
+               # and cogito users should understand it relates to cg-seek.
                [ -s "$GIT_DIR/head-name" ] && die "won't bisect on seeked tree"
-               echo "${head#refs/heads/}" >"$GIT_DIR/head-name"
+               echo "${head#refs/heads/}" >"$GIT_DIR/BISECT_START"
                ;;
        *)
                die "Bad HEAD - strange symbolic ref"
@@ -131,7 +141,7 @@ bisect_write() {
                *)              die "Bad bisect_write argument: $state" ;;
        esac
        git update-ref "refs/bisect/$tag" "$rev"
-       echo "# $state: "$(git show-branch $rev) >>"$GIT_DIR/BISECT_LOG"
+       echo "# $state: $(git show-branch $rev)" >>"$GIT_DIR/BISECT_LOG"
        test -z "$nolog" && echo "git-bisect $state $rev" >>"$GIT_DIR/BISECT_LOG"
 }
 
@@ -145,20 +155,16 @@ bisect_state() {
                rev=$(git rev-parse --verify HEAD) ||
                        die "Bad rev input: HEAD"
                bisect_write "$state" "$rev" ;;
-       2,bad)
-               rev=$(git rev-parse --verify "$2^{commit}") ||
-                       die "Bad rev input: $2"
-               bisect_write "$state" "$rev" ;;
-       *,good|*,skip)
+       2,bad|*,good|*,skip)
                shift
-               revs=$(git rev-parse --revs-only --no-flags "$@") &&
-                       test '' != "$revs" || die "Bad rev input: $@"
-               for rev in $revs
+               for rev in "$@"
                do
-                       rev=$(git rev-parse --verify "$rev^{commit}") ||
-                               die "Bad rev commit: $rev^{commit}"
-                       bisect_write "$state" "$rev"
+                       sha=$(git rev-parse --verify "$rev^{commit}") ||
+                               die "Bad rev input: $rev"
+                       bisect_write "$state" "$sha"
                done ;;
+       *,bad)
+               die "'git bisect bad' can take only one argument." ;;
        *)
                usage ;;
        esac
@@ -287,14 +293,14 @@ bisect_next() {
        bisect_next_check good
 
        skip=$(git for-each-ref --format='%(objectname)' \
-               "refs/bisect/skip-*" | tr '[\012]' ' ') || exit
+               "refs/bisect/skip-*" | tr '\012' ' ') || exit
 
        BISECT_OPT=''
        test -n "$skip" && BISECT_OPT='--bisect-all'
 
        bad=$(git rev-parse --verify refs/bisect/bad) &&
        good=$(git for-each-ref --format='^%(objectname)' \
-               "refs/bisect/good-*" | tr '[\012]' ' ') &&
+               "refs/bisect/good-*" | tr '\012' ' ') &&
        eval="git rev-list --bisect-vars $BISECT_OPT $good $bad --" &&
        eval="$eval $(cat "$GIT_DIR/BISECT_NAMES")" &&
        eval=$(filter_skipped "$eval" "$skip") &&
@@ -327,9 +333,9 @@ bisect_visualize() {
 
        if test $# = 0
        then
-               case "${DISPLAY+set}" in
+               case "${DISPLAY+set}${MSYSTEM+set}${SECURITYSESSIONID+set}" in
                '')     set git log ;;
-               set)    set gitk ;;
+               set*)   set gitk ;;
                esac
        else
                case "$1" in
@@ -349,8 +355,8 @@ bisect_reset() {
                return
        }
        case "$#" in
-       0) if [ -s "$GIT_DIR/head-name" ]; then
-              branch=`cat "$GIT_DIR/head-name"`
+       0) if [ -s "$GIT_DIR/BISECT_START" ]; then
+              branch=`cat "$GIT_DIR/BISECT_START"`
           else
               branch=master
           fi ;;
@@ -361,7 +367,9 @@ bisect_reset() {
            usage ;;
        esac
        if git checkout "$branch"; then
+               # Cleanup head-name if it got left by an old version of git-bisect
                rm -f "$GIT_DIR/head-name"
+               rm -f "$GIT_DIR/BISECT_START"
                bisect_clean_state
        fi
 }
@@ -457,6 +465,8 @@ case "$#" in
     cmd="$1"
     shift
     case "$cmd" in
+    help)
+        git bisect -h ;;
     start)
         bisect_start "$@" ;;
     bad|good|skip)