git-tag: support -F <file> option

dscho · Junio C Hamano · commit f79c73ce9ce5 · 2006-12-21T22:44:04.000-08:00
This imitates the behaviour of git-commit.

Noticed by Han-Wen Nienhuys.

Signed-off-by: Johannes Schindelin &lt;Johannes.Schindelin@gmx.de&gt;
Signed-off-by: Junio C Hamano &lt;junkio@cox.net&gt;
diff --git a/Documentation/git-tag.txt b/Documentation/git-tag.txt
@@ -9,7 +9,8 @@ git-tag - Create a tag object signed with GPG
 SYNOPSIS
 --------
 [verse]
-'git-tag' [-a | -s | -u <key-id>] [-f | -d] [-m <msg>] <name> [<head>]
+'git-tag' [-a | -s | -u <key-id>] [-f | -d] [-m <msg> | -F <file>]
+	 <name> [<head>]
 'git-tag' -l [<pattern>]
 
 DESCRIPTION
@@ -60,6 +61,9 @@ OPTIONS
 -m <msg>::
 	Use the given tag message (instead of prompting)
 
+-F <file>::
+	Take the tag message from the given file.  Use '-' to
+	read the message from the standard input.
 
 Author
 ------
diff --git a/git-tag.sh b/git-tag.sh
@@ -45,6 +45,17 @@ do
 	    message_given=1
 	fi
 	;;
+    -F)
+	annotate=1
+	shift
+	if test "$#" = "0"; then
+	    die "error: option -F needs an argument"
+	    exit 2
+	else
+	    message="$(cat "$1")"
+	    message_given=1
+	fi
+	;;
     -u)
 	annotate=1
 	signed=1
