Eric Niebler wrote:

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If you use sregex time = (_d) >> ':' >> (_d >> _d); instead of sregex time = sregex::compile( "(\\d):(\\d\\d)" );

There's your mistake. In static regexes, ()'s group but they don't capture. The equivalent of the dynamic regex is:

sregex time = (s1= _d) >> ':' >> (s2= _d >> _d);

Thanks! It works as expected now. It was not obvious to me that you needed to capture in order for regex_token_iterator to work, allthough it does now that you clarified. There is no way to overload left or right parentheses :-) Perhaps a note in the docs or another example will help other people not to make the same mistake. Thanks again for your answer and xpressive! Best regards Jorge