Makefile

@@ -5,13 +5,9 @@ fmt:
 	go fmt ./...
 vet: fmt
 	go vet ./...
-buildLibUnopt: vet
-	go build -gcflags="all=-N -l" ./...
-unopt: buildLibUnopt
-	go build -C kg/ -gcflags="all=-N -l" -o kg ./...
 buildLib: vet
-	go build ./...
+	go build -gcflags="all=-N -l" ./...
 buildCmd: buildLib
-	go build -C kg/ -o kg ./...
+	go build -C kg/ -gcflags="all=-N -l" -o kg ./...
 test: buildCmd
 	go test -v ./...

regex/postfixNode.go

@@ -131,9 +131,13 @@ func newEscapedNode(c rune, inCharClass bool) (postfixNode, error) {
 	case 'v': // Vertical tab
 		toReturn.nodetype = characterNode
 		toReturn.contents = append(toReturn.contents, rune(11))
-	case '-': // Literal hyphen
-		toReturn.nodetype = characterNode
-		toReturn.contents = append(toReturn.contents, '-')
+	case '-': // Literal hyphen - only in character class
+		if inCharClass {
+			toReturn.nodetype = characterNode
+			toReturn.contents = append(toReturn.contents, '-')
+		} else {
+			return postfixNode{}, fmt.Errorf("invalid escape character")
+		}
 	default: // None of the above - append it as a regular character
 		if isNormalChar(c) { // Normal characters cannot be escaped
 			return postfixNode{}, fmt.Errorf("invalid escape character")