I wouldn't know unless I see the whole picture. Which parse function did you call? Have you tried using the Spirit debugger? BTW, please post Spirit related questions to Spirit's mailing list: Spirit-general@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/spirit-general Thanks! Cheers, -- Joel de Guzman http://www.boost-consulting.com http://spirit.sf.net jwwillcox2003 wrote:

struct usmtf : public grammar<usmtf> { template <typename ScannerT>

struct definition { definition(usmtf const& self) { message = mainText;

exerciseSet = !eol_p >> str_p("EXER")[do_print("EXER")]

...

...

ch_p('/') >> *(field >> ch_p('/')) >> ch_p('/'); messageIdentifierSet = str_p("MSGID")[do_print("MSGID")] ch_p('/') >> *(field >> ch_p('/')) >> ch_p('/');

field = lexeme_d [ +(upper_p - ch_p('/') - eol_p) ];

mainText = exerciseSet >> eol_p >> messageIdentifierSet

...

...

end_p; };

rule<ScannerT> message, mainText, exerciseSet, messageIdentifierSet, field;

rule<ScannerT> const& start() const { return message; } }; };

Using this grammar above, it will parse EXER/EE/FF//MSGID// using mainText = exerciseSet >> messageIdentifierSet >> end_p;

However, I want it to parse EXER/EE/FF// MSGID//

and mainText = exerciseSet >> eol_p >> messageIdentifierSet >> end_p; does not work. Why? How do I parse what I want?