Handle all potential literal values

Adds support for literal helper names in a few missing cases such as block expressions and subexpressions.

lib/handlebars/compiler/compiler.js

@@ -110,6 +110,8 @@ Compiler.prototype = {
   },
 
   BlockStatement: function(block) {
+    transformLiteralToPath(block);
+
     var program = block.program,
         inverse = block.inverse;
 
@@ -172,7 +174,6 @@ Compiler.prototype = {
   },
 
   MustacheStatement: function(mustache) {
-    transformLiteralToPath(mustache);
     this.SubExpression(mustache);
 
     if(mustache.escaped && !this.options.noEscape) {
@@ -191,6 +192,7 @@ Compiler.prototype = {
   CommentStatement: function() {},
 
   SubExpression: function(sexpr) {
+    transformLiteralToPath(sexpr);
     var type = this.classifySexpr(sexpr);
 
     if (type === 'simple') {
@@ -487,9 +489,11 @@ function argEquals(a, b) {
   }
 }
 
-function transformLiteralToPath(mustache) {
-  if (mustache.path.type.match(/Literal$/)) {
-    var literal = mustache.path;
-    mustache.path = { type: 'PathExpression', original: String(literal.original), parts: [String(literal.original)], depth: 0, data: false };
+function transformLiteralToPath(sexpr) {
+  if (!sexpr.path.parts) {
+    var literal = sexpr.path;
+    // Casting to string here to make false and 0 literal values play nicely with the rest
+    // of the system.
+    sexpr.path = new AST.PathExpression(false, 0, [literal.original+''], literal.original+'', literal.log);
   }
 }