Merge branch 'maint-1.5.4' into maint

* maint-1.5.4:
  git-bisect: make "start", "good" and "skip" succeed or fail atomically
  git-am: cope better with an empty Subject: line
  Ignore leading empty lines while summarizing merges
  bisect: squelch "fatal: ref HEAD not a symref" misleading message
  builtin-apply: Show a more descriptive error on failure when opening a patch
  Clarify documentation of git-cvsserver, particularly in relation to git-shell

1 files changed, 10 insertions, 14 deletions

diff --git a/git-am.sh b/git-am.sh
index ac5c388060..245e1db1fc 100755
--- a/git-am.sh
+++ b/git-am.sh
@@ -107,7 +107,7 @@ It does not apply to blobs recorded in its index."
     # patch did not touch, so recursive ends up canceling them,
     # saying that we reverted all those changes.
 
-    eval GITHEAD_$his_tree='"$SUBJECT"'
+    eval GITHEAD_$his_tree='"$FIRSTLINE"'
     export GITHEAD_$his_tree
     git-merge-recursive $orig_tree -- HEAD $his_tree || {
 	    git rerere
@@ -117,10 +117,6 @@ It does not apply to blobs recorded in its index."
     unset GITHEAD_$his_tree
 }
 
-reread_subject () {
-	git stripspace <"$1" | sed -e 1q
-}
-
 prec=4
 dotest=".dotest"
 sign= utf8=t keep= skip= interactive= resolved= binary= rebasing=
@@ -331,7 +327,11 @@ do
 			echo "Patch is empty.  Was it split wrong?"
 			stop_here $this
 		}
-		git stripspace < "$dotest/msg" > "$dotest/msg-clean"
+		SUBJECT="$(sed -n '/^Subject/ s/Subject: //p' "$dotest/info")"
+		case "$keep_subject" in -k)  SUBJECT="[PATCH] $SUBJECT" ;; esac
+
+		(echo "$SUBJECT" ; echo ; cat "$dotest/msg") |
+			git stripspace > "$dotest/msg-clean"
 		;;
 	esac
 
@@ -347,9 +347,6 @@ do
 
 	export GIT_AUTHOR_NAME GIT_AUTHOR_EMAIL GIT_AUTHOR_DATE
 
-	SUBJECT="$(sed -n '/^Subject/ s/Subject: //p' "$dotest/info")"
-	case "$keep_subject" in -k)  SUBJECT="[PATCH] $SUBJECT" ;; esac
-
 	case "$resume" in
 	'')
 	    if test '' != "$SIGNOFF"
@@ -368,10 +365,8 @@ do
 		ADD_SIGNOFF=
 	    fi
 	    {
-		printf '%s\n' "$SUBJECT"
 		if test -s "$dotest/msg-clean"
 		then
-			echo
 			cat "$dotest/msg-clean"
 		fi
 		if test '' != "$ADD_SIGNOFF"
@@ -388,6 +383,7 @@ do
 			;;
 		esac
 	esac
+	FIRSTLINE=$(head -1 "$dotest/final-commit")
 
 	resume=
 	if test "$interactive" = t
@@ -408,7 +404,7 @@ do
 		[aA]*) action=yes interactive= ;;
 		[nN]*) action=skip ;;
 		[eE]*) git_editor "$dotest/final-commit"
-		       SUBJECT=$(reread_subject "$dotest/final-commit")
+		       FIRSTLINE=$(head -1 "$dotest/final-commit")
 		       action=again ;;
 		[vV]*) action=again
 		       LESS=-S ${PAGER:-less} "$dotest/patch" ;;
@@ -431,7 +427,7 @@ do
 		stop_here $this
 	fi
 
-	printf 'Applying %s\n' "$SUBJECT"
+	printf 'Applying %s\n' "$FIRSTLINE"
 
 	case "$resolved" in
 	'')
@@ -489,7 +485,7 @@ do
 	tree=$(git write-tree) &&
 	parent=$(git rev-parse --verify HEAD) &&
 	commit=$(git commit-tree $tree -p $parent <"$dotest/final-commit") &&
-	git update-ref -m "$GIT_REFLOG_ACTION: $SUBJECT" HEAD $commit $parent ||
+	git update-ref -m "$GIT_REFLOG_ACTION: $FIRSTLINE" HEAD $commit $parent ||
 	stop_here $this
 
 	if test -x "$GIT_DIR"/hooks/post-applypatch