Merge pull request #65 from rgrove/master.

Add support for multi-line comments

spec/parser_spec.rb

@@ -80,6 +80,10 @@ describe "Parser" do
       pad("{{! '#{comment}' }}")
     end
 
+    def multiline_comment(comment)
+      pad("{{! '\n#{comment}\n' }}")
+    end
+
     def content(string)
       pad("CONTENT[ '#{string}' ]")
     end
@@ -160,6 +164,12 @@ describe "Parser" do
     end
   end
 
+  it "parses a multi-line comment" do
+    ast_for("{{!\nthis is a multi-line comment\n}}").should == program do
+      multiline_comment "this is a multi-line comment"
+    end
+  end
+
   it "parses an inverse section" do
     ast_for("{{#foo}} bar {{^}} baz {{/foo}}").should == program do
       block do

src/handlebars.l

@@ -13,7 +13,7 @@
 <mu>"{{"\s*"else"            { return 'OPEN_INVERSE'; }
 <mu>"{{{"                    { return 'OPEN_UNESCAPED'; }
 <mu>"{{&"                    { return 'OPEN_UNESCAPED'; }
-<mu>"{{!".*?"}}"             { yytext = yytext.substr(3,yyleng-5); this.begin("INITIAL"); return 'COMMENT'; }
+<mu>"{{!"[\s\S]*?"}}"        { yytext = yytext.substr(3,yyleng-5); this.begin("INITIAL"); return 'COMMENT'; }
 <mu>"{{"                     { return 'OPEN'; }
 
 <mu>"="                      { return 'EQUALS'; }