Fixed bug https://github.com/vitaut/format/issues/16 . Thanks to https://github.com/fil222 !

format-test.cc

@@ -1022,6 +1022,10 @@ void CheckUnknownTypes(
   }
 }
 
+TEST(FormatterTest, FormatBool) {
+  EXPECT_EQ(L"1", str(Format(L"{}") << true));
+}
+
 TEST(FormatterTest, FormatShort) {
   short s = 42;
   EXPECT_EQ("42", str(Format("{0:d}") << s));

format.h

@@ -760,7 +760,7 @@ class BasicWriter {
     return *this;
   }
 
-  void Write(const std::basic_string<char> &s, const FormatSpec &spec) {
+  void Write(const std::basic_string<Char> &s, const FormatSpec &spec) {
     FormatString(s.data(), s.size(), spec);
   }