git-commit: log parameter updates.

While moving '-m' to make room for CVS compatible "here is the
log message", enhance source of log parameters.

  -m 'message': a command line parameter.
  -F <file>   : a file (use '-' to read from stdin).
  -C <commit> : message in existing commit.
  -c <commit> : message in existing commit (allows further editing).

Longer option names for these options are also available.

While we are at it, get rid of shell array bashism.

Signed-off-by: Junio C Hamano <junkio@cox.net>

git-cherry

@@ -23,7 +23,7 @@ The output is intended to be used as:
     while read commit
     do
         GIT_EXTERNAL_DIFF=git-apply-patch-script git-diff-tree -p "$commit" &&
-	git-commit-script -m "$commit"
+	git-commit-script -C "$commit"
     done
 '
 

git-commit-script

@@ -6,44 +6,105 @@
 . git-sh-setup-script || die "Not a git archive"
 
 usage () {
-	die 'git commit [--all] [-m existing-commit] [<path>...]'
+	die 'git commit [-a]  [-m <message>] [-F <logfile>] [(-C|-c) <commit>] [<path>...]'
 }
 
-files=()
-while case "$#" in 0) break ;; esac
+all= logfile= use_commit= no_edit= log_given= log_message=
+while case "$#" in 0) break;; esac
 do
-    case "$1" in
-    -m) shift
-        case "$#" in
-	0) usage ;;
-	*) use_commit=`git-rev-parse --verify "$1"` ||
-	   exit ;;
-	esac
-	;;
-    --all)
-	files=($(git-diff-files --name-only))\
-	;;
-    *)  break
-        ;;
-    esac
+  case "$1" in
+  -a|--a|--al|--all)
+    all=t
+    shift ;;
+  -F=*|--f=*|--fi=*|--fil=*|--file=*)
+    log_given=t$log_given
+    logfile=`expr "$1" : '-[^=]*=\(.*\)'`
+    no_edit=t
+    shift ;;
+  -F|--f|--fi|--fil|--file)
+    case "$#" in 1) usage ;; esac; shift
+    log_given=t$log_given
+    logfile="$1"
+    no_edit=t
+    shift ;;
+  -m=*|--m=*|--me=*|--mes=*|--mess=*|--messa=*|--messag=*|--message=*)
+    log_given=t$log_given
+    log_message=`expr "$1" : '-[^=]*=\(.*\)'`
+    no_edit=t
+    shift ;;
+  -m|--m|--me|--mes|--mess|--messa|--messag|--message)
+    case "$#" in 1) usage ;; esac; shift
+    log_given=t$log_given
+    log_message="$1"
+    no_edit=t
+    shift ;;
+  -c=*|--ree=*|--reed=*|--reedi=*|--reedit=*|--reedit-=*|--reedit-m=*|\
+  --reedit-me=*|--reedit-mes=*|--reedit-mess=*|--reedit-messa=*|\
+  --reedit-messag=*|--reedit-message=*)
+    log_given=t$log_given
+    use_commit=`expr "$1" : '-[^=]*=\(.*\)'`
+    shift ;;
+  -c|--ree|--reed|--reedi|--reedit|--reedit-|--reedit-m|--reedit-me|\
+  --reedit-mes|--reedit-mess|--reedit-messa|--reedit-messag|--reedit-message)
+    case "$#" in 1) usage ;; esac; shift
+    log_given=t$log_given
+    use_commit="$1"
+    shift ;;
+  -C=*|--reu=*|--reus=*|--reuse=*|--reuse-=*|--reuse-m=*|--reuse-me=*|\
+  --reuse-mes=*|--reuse-mess=*|--reuse-messa=*|--reuse-messag=*|\
+  --reuse-message=*)
+    log_given=t$log_given
+    use_commit=`expr "$1" : '-[^=]*=\(.*\)'`
+    no_edit=t
+    shift ;;
+  -C|--reu|--reus|--reuse|--reuse-|--reuse-m|--reuse-me|--reuse-mes|\
+  --reuse-mess|--reuse-messa|--reuse-messag|--reuse-message)
+    case "$#" in 1) usage ;; esac; shift
+    log_given=t$log_given
+    use_commit="$1"
+    no_edit=t
+    shift ;;
+  --)
     shift
+    break ;;
+  -*)
+     usage ;;
+  *)
+    break ;;
+  esac
 done
 
-git-update-cache -q --refresh -- "$@" "${files[@]}" || exit 1
+case "$log_given" in
+tt*)
+  die "Only one of -c/-C/-F/-m can be used." ;;
+esac
+
+case "$all" in
+t)
+	git-diff-files --name-only -z |
+	xargs -0 git-update-cache -q -- || exit 1 ;;
+esac
+git-update-cache -q --refresh -- "$@" || exit 1
+
 PARENTS="-p HEAD"
 if [ ! -r "$GIT_DIR/HEAD" ]; then
 	if [ -z "$(git-ls-files)" ]; then
 		echo Nothing to commit 1>&2
 		exit 1
 	fi
-	(
+	{
 		echo "#"
 		echo "# Initial commit"
+		case "$no_edit" in
+		t) echo "# (ignoring your commit message for initial commit)"
+		   no_edit= 
+		esac
 		echo "#"
 		git-ls-files | sed 's/^/# New file: /'
 		echo "#"
-	) > .editmsg
+	} >.editmsg
 	PARENTS=""
+	no_edit=
 else
 	if [ -f "$GIT_DIR/MERGE_HEAD" ]; then
 		echo "#"
@@ -51,8 +112,25 @@ else
 		echo "# If this is not correct, please remove the file"
 		echo "#	$GIT_DIR/MERGE_HEAD"
 		echo "# and try again"
+		case "$no_edit" in
+		t) echo "# (ignoring your commit message for merge commit)"
+		   no_edit= 
+		esac
 		echo "#"
 		PARENTS="-p HEAD -p MERGE_HEAD"
+	elif test "$log_message" != ''
+	then
+		echo "$log_message"
+	elif test "$logfile" != ""
+	then
+		if test "$logfile" = -
+		then
+			test -t 0 &&
+			echo >&2 "(reading log message from standard input)"
+			cat
+		else
+			cat <"$logfile"
+		fi
 	elif test "$use_commit" != ""
 	then
 		pick_author_script='
@@ -92,17 +170,22 @@ then
 	rm .editmsg
 	exit 1
 fi
-case "$use_commit" in
+case "$no_edit" in
 '')
 	${VISUAL:-${EDITOR:-vi}} .editmsg
 	;;
 esac
 grep -v '^#' < .editmsg | git-stripspace > .cmitmsg
-[ -s .cmitmsg ] && 
+if test -s .cmitmsg
+then
 	tree=$(git-write-tree) &&
 	commit=$(cat .cmitmsg | git-commit-tree $tree $PARENTS) &&
 	echo $commit > "$GIT_DIR/HEAD" &&
 	rm -f -- "$GIT_DIR/MERGE_HEAD"
+else
+	echo >&2 "* no commit message?  aborting commit."
+	false
+fi
 ret="$?"
 rm -f .cmitmsg .editmsg
 exit "$ret"

git-rebase-script

@@ -37,7 +37,7 @@ do
 	esac
 	S=`cat "$GIT_DIR/HEAD"` &&
         GIT_EXTERNAL_DIFF=git-apply-patch-script git-diff-tree -p $commit &&
-	git-commit-script -m "$commit" || {
+	git-commit-script -C "$commit" || {
 		echo $commit >>$fail
 		git-read-tree --reset -u $S
 	}