Ignoring the @charset directive for now.

Author: Aaron Leung

constants.cpp

@@ -44,6 +44,7 @@ namespace Sass {
     extern const char kHz_kwd[]  = "kHz";
 
     // css functions and keywords
+    extern const char charset_kwd[]    = "@charset";
     extern const char media_kwd[]      = "@media";
     extern const char only_kwd[]       = "only";
     extern const char rgb_kwd[]        = "rgb(";

constants.hpp

@@ -44,6 +44,7 @@ namespace Sass {
     extern const char kHz_kwd[];
 
     // css functions and keywords
+    extern const char charset_kwd[];
     extern const char media_kwd[];
     extern const char only_kwd[];
     extern const char rgb_kwd[];

document_parser.cpp

@@ -66,6 +66,11 @@ namespace Sass {
         root << parse_warning();
         if (!lex< exactly<';'> >()) throw_syntax_error("top-level @warn directive must be terminated by ';'");
       }
+      // ignore the @charset directive for now
+      else if (lex< exactly< charset_kwd > >()) {
+        lex< string_constant >();
+        lex< exactly<';'> >();
+      }
       else if (peek< directive >()) {
         Node dir(parse_directive(Node(), Node::none));
         if (dir.type() == Node::blockless_directive) {
@@ -645,6 +650,11 @@ namespace Sass {
       else if (peek< media >()) {
         block << parse_media_query(inside_of);
       }
+      // ignore the @charset directive for now
+      else if (lex< exactly< charset_kwd > >()) {
+        lex< string_constant >();
+        lex< exactly<';'> >();
+      }
       else if (peek< directive >()) {
         Node dir(parse_directive(surrounding_ruleset, inside_of));
         if (dir.type() == Node::blockless_directive) semicolon = true;