Re: [boost] [regex][1.33.1-rc2] regression wrt 1.32.0

Indeed it does.

If the user wants only one substitution, I'd say the use of /g, which allows s/// to match multiple times, is the central mistake.

And just to clarify: regex_replace finds and replaces *all* occurances (equivalent to /g) unless you tell it otherwise with the format_first_only flag. John.