Re: [Boost-users] [Regex] Subexpression matching during search

I have probably missed something in the doc that answers my query but I just can’t see it.

If the regex string is embedded in the C++ source then those backslashes will need to be doubled to \\d. Other than that I don't see anything wrong, can you please post a complete self-contained text case so we can see where you're going wrong? John.