show-branch -g: default to HEAD

diff --git a/git-applypatch.sh b/git-applypatch.sh
index 66fd19ae2df2e1f44b709a20802342c88d9d2cf2..8df2aee4c2d031ac10c66af0a079bd022c281c0d 100755 (executable)
--- a/git-applypatch.sh
+++ b/git-applypatch.sh
@@ -10,7 +10,11 @@
 ##     $3 - "info" file with Author, email and subject
 ##     $4 - optional file containing signoff to add
 ##
-. git-sh-setup || die "Not a git archive."
+
+USAGE='<msg> <patch> <info> [<signoff>]'
+. git-sh-setup
+
+case "$#" in 3|4) ;; *) usage ;; esac
 
 final=.dotest/final-commit
 ##
@@ -83,7 +87,7 @@ while [ "$interactive" = yes ]; do
        echo "--------------------------"
        cat "$final"
        echo "--------------------------"
-       echo -n "Apply? [y]es/[n]o/[e]dit/[a]ccept all "
+       printf "Apply? [y]es/[n]o/[e]dit/[a]ccept all "
        read reply
        case "$reply" in
                y|Y) interactive=no;;
@@ -120,26 +124,36 @@ git-apply --index "$PATCHFILE" || {
        O_OBJECT=`cd "$GIT_OBJECT_DIRECTORY" && pwd`
        rm -fr .patch-merge-*
 
+       if git-apply -z --index-info "$PATCHFILE" \
+               >.patch-merge-index-info 2>/dev/null &&
+               GIT_INDEX_FILE=.patch-merge-tmp-index \
+               git-update-index -z --index-info <.patch-merge-index-info &&
+               GIT_INDEX_FILE=.patch-merge-tmp-index \
+               git-write-tree >.patch-merge-tmp-base &&
+               (
+                       mkdir .patch-merge-tmp-dir &&
+                       cd .patch-merge-tmp-dir &&
+                       GIT_INDEX_FILE="../.patch-merge-tmp-index" \
+                       GIT_OBJECT_DIRECTORY="$O_OBJECT" \
+                       git-apply $binary --index
+               ) <"$PATCHFILE"
+       then
+               echo Using index info to reconstruct a base tree...
+               mv .patch-merge-tmp-base .patch-merge-base
+               mv .patch-merge-tmp-index .patch-merge-index
+       else
        (
                N=10
 
-               # if the patch records the base tree...
-               sed -ne '
-                       /^diff /q
-                       /^applies-to: \([0-9a-f]*\)$/{
-                               s//\1/p
-                               q
-                       }
-               ' "$PATCHFILE"
-
-               # or hoping the patch is against our recent commits...
+               # Otherwise, try nearby trees that can be used to apply the
+               # patch.
                git-rev-list --max-count=$N HEAD
 
                # or hoping the patch is against known tags...
                git-ls-remote --tags .
        ) |
-       while read base junk
-       do
+           while read base junk
+           do
                # Try it if we have it as a tree.
                git-cat-file tree "$base" >/dev/null 2>&1 || continue
 
@@ -155,7 +169,8 @@ git-apply --index "$PATCHFILE" || {
                        mv ../.patch-merge-tmp-index ../.patch-merge-index &&
                        echo "$base" >../.patch-merge-base
                ) <"$PATCHFILE"  2>/dev/null && break
-       done
+           done
+       fi
 
        test -f .patch-merge-index &&
        his_tree=$(GIT_INDEX_FILE=.patch-merge-index git-write-tree) &&
@@ -167,7 +182,7 @@ git-apply --index "$PATCHFILE" || {
        # This is not so wrong.  Depending on which base we picked,
        # orig_tree may be wildly different from ours, but his_tree
        # has the same set of wildly different changes in parts the
-       # patch did not touch, so resolve ends up cancelling them,
+       # patch did not touch, so resolve ends up canceling them,
        # saying that we reverted all those changes.
 
        if git-merge-resolve $orig_tree -- HEAD $his_tree
@@ -189,7 +204,7 @@ echo Wrote tree $tree
 parent=$(git-rev-parse --verify HEAD) &&
 commit=$(git-commit-tree $tree -p $parent <"$final") || exit 1
 echo Committed: $commit
-git-update-ref HEAD $commit $parent || exit
+git-update-ref -m "applypatch: $SUBJECT" HEAD $commit $parent || exit
 
 if test -x "$GIT_DIR"/hooks/post-applypatch
 then