Manually select the last argument.

This implementation does not rely on Bash-specific functionality.

git-flow-feature

@@ -180,7 +180,7 @@ parse_args() {
 	parse_cmdline "$@"
 
 	# read arguments into global variables
-	NAME=${!#}
+	NAME=$(last_arg "$@")
 	BRANCH=$PREFIX$NAME
 }
 

git-flow-hotfix

@@ -124,7 +124,7 @@ parse_args() {
 	eval set -- "${FLAGS_ARGV}"
 
 	# read arguments into global variables
-	VERSION=${!#}
+	VERSION=$(last_arg "$@")
 	BRANCH=$PREFIX$VERSION
 }
 

git-flow-release

@@ -121,7 +121,7 @@ parse_args() {
 	eval set -- "${FLAGS_ARGV}"
 
 	# read arguments into global variables
-	VERSION=${!#}
+	VERSION=$(last_arg "$@")
 	BRANCH=$PREFIX$VERSION
 }
 

gitflow-common

@@ -44,6 +44,14 @@
 warn() { echo "$@" >&2; }
 die() { warn "$@"; exit 1; }
 
+# argument processing
+last_arg() {
+    if [ $# -ne 0 ]; then
+        shift $(expr $# - 1)
+        echo "$1"
+    fi
+}
+
 # set logic
 has() {
 	local item=$1; shift