better indentation handling for far-left heredocs and herecomments

lib/nodes.js

@@ -523,7 +523,7 @@
     CommentNode.prototype.compile_node = function compile_node(o) {
       var sep;
       if (this.type === 'herecomment') {
-        sep = '\n' + this.idt(1);
+        sep = '\n' + this.tab;
         return "" + this.tab + "/*" + sep + (this.lines.join(sep)) + "\n" + this.tab + "*/";
       } else {
         return ("" + this.tab + "//") + this.lines.join(("\n" + this.tab + "//"));

src/nodes.coffee

@@ -368,7 +368,7 @@ exports.CommentNode: class CommentNode extends BaseNode
 
   compile_node: (o) ->
     if @type is 'herecomment'
-      sep: '\n' + @idt(1)
+      sep: '\n' + @tab
       "$@tab/*$sep${ @lines.join(sep) }\n$@tab*/"
     else
       "$@tab//" + @lines.join("\n$@tab//")