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Is it possible to tell std::regex_match to ignore particular character(s) in back references?

For example, I may want to ignore @ and expect "([a-z]*@[a-z]*)\1" to match "foo@barfoobar".

If not (I suspect that it's not possible), what would be another way of solving this problem?

Is it possible to tell std::regex_match to ignore particular character(s) in back references?

For example, I may want to ignore @ and expect "([a-z]*@[a-z]*)\1" to match "foo@barfoobar".

If not (I suspect that it's not possible), what would be another way of solving this problem?

  • c++
  • regex
  • backreference
Share Improve this question edited Mar 27 at 19:06 Remy Lebeau 601k36 gold badges507 silver badges851 bronze badges asked Mar 27 at 18:58 DYZDYZ 57.2k10 gold badges72 silver badges99 bronze badges
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No, there's no way to ignore part of the back-reference. The solution is to split the match into two capture groups so you don't include the unwanted character in the back-reference.

([a-z]*)@([a-z]*)\1\2

本文标签： cRegex Ignoring characters in backreferencesStack Overflow

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