Adjust more error reporting

Author: mgreter

src/error_handling.cpp

@@ -41,9 +41,9 @@ namespace Sass {
     InvalidArgumentType::InvalidArgumentType(ParserState pstate, Backtraces traces, std::string fn, std::string arg, std::string type, const Value* value)
     : Base(pstate, def_msg, traces), fn(fn), arg(arg), type(type), value(value)
     {
-      msg = arg + ": \"";
+      msg = arg + ": ";
       if (value) msg += value->to_string(Sass_Inspect_Options());
-      msg += "\" is not a " + type + " for `" + fn + "'";
+      msg += " is not a " + type + ".";
     }
 
     MissingArgument::MissingArgument(ParserState pstate, Backtraces traces, std::string fn, std::string arg, std::string fntype)

src/fn_miscs.cpp

@@ -91,13 +91,13 @@ namespace Sass {
       return SASS_MEMORY_NEW(Boolean, pstate, features->find(s) != features->end());
     }
 
-    Signature call_sig = "call($name, $args...)";
+    Signature call_sig = "call($function, $args...)";
     BUILT_IN(call)
     {
       std::string name;
-      Function* ff = Cast<Function>(env["$name"]);
-      // Interpolation* ss = Cast<Interpolation>(env["$name"]);
-      String_Constant* ss = Cast<String_Constant>(env["$name"]);
+      Function* ff = Cast<Function>(env["$function"]);
+      // Interpolation* ss = Cast<Interpolation>(env["$function"]);
+      String_Constant* ss = Cast<String_Constant>(env["$function"]);
 
       if (ss) {
         name = unquote(ss->value());

src/fn_numbers.cpp

@@ -60,7 +60,7 @@ namespace Sass {
     BUILT_IN(percentage)
     {
       Number_Obj n = ARGN("$number");
-      if (!n->is_unitless()) error("Exprected " + n->to_string() + " to have no units.", pstate, traces);
+      if (!n->is_unitless()) error("$number: Expected " + n->to_string() + " to have no units.", pstate, traces);
       return SASS_MEMORY_NEW(Number, pstate, n->value() * 100, "%");
     }