Allow flags strings in quotes.

src/flags.cc

 // Copyright 2006-2008 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 481 matching lines @@
 
 
 static char* SkipBlackSpace(char* p) {
   while (*p != '\0' && isspace(*p) == 0) p++;
   return p;
 }
 
 
 // static
 int FlagList::SetFlagsFromString(const char* str, int len) {
+  // The string might be in quotes. Skip the quotes.
+  if (len >= 2 && (str[0] == '\'' || str[0] == '"') && str[0] == str[len - 1]) {
+    ++str;
+    len -= 2;
+  }
+
   // make a 0-terminated copy of str
   ScopedVector<char> copy0(len + 1);
   OS::MemCopy(copy0.start(), str, len);
   copy0[len] = '\0';
 
   // strip leading white space
   char* copy = SkipWhiteSpace(copy0.start());
 
   // count the number of 'arguments'
   int argc = 1;  // be compatible with SetFlagsFromCommandLine()
@@ skipping 60 matching lines @@
 
 
 // static
 void FlagList::EnforceFlagImplications() {
 #define FLAG_MODE_DEFINE_IMPLICATIONS
 #include "flag-definitions.h"
 #undef FLAG_MODE_DEFINE_IMPLICATIONS
 }
 
 } }  // namespace v8::internal