Conditional pattern as described here doesnt seem to work
See my current setup
I am trying to match any line that contains test and pie, any ideas what I am doing wrong?
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But `(?:(test)pie)` has no conditional construct in it. `(?:(test)pie)` = `testpie`. What is the problem? – Wiktor Stribiżew Jul 30 '19 at 21:06
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@WiktorStribiżew I am trying to match for any line that contains both test and pie – sp00kyb00g13 Jul 31 '19 at 12:47
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2`test.*pie|pie.*test` or `^(?=.*test)(?=.*pie).*` – Wiktor Stribiżew Jul 31 '19 at 12:49
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Possible duplicate of [Regex to match string containing two names in any order](https://stackoverflow.com/questions/4389644/regex-to-match-string-containing-two-names-in-any-order) – Wiktor Stribiżew Jul 31 '19 at 12:53
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@WiktorStribiżew your answers were the correct one my thought process was to make a regexp where the first condition would match `test` and the then would try to match `pie` but I guess this was the wrong approach. – sp00kyb00g13 Jul 31 '19 at 13:00
1 Answers
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My guess is that you might be trying to design some expression that might look like:
(?(exp)(?P<exp>)\btest\b|(?P<fruits>)\bpie\b)
Demo 1
or
(?(1)(\btest\b)|(\bpie\b))
Demo 2
The expression is explained on the top right panel of regex101.com, if you wish to explore/simplify/modify it, and in this link, you can watch how it would match against some sample inputs, if you like.
Emma
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3It would be better to explain things in your own words, otherwise, somebody might think you're not making sense. Like for instance, unless this sequence `(?(exp)(?P
)\btest\b|(?P – Jul 30 '19 at 23:29)\bpie\b)` is run inside a quantified group, `(?(exp))` is always false, and the _yes_ part is never matched. Also, even though PCRE, like Perl respects Pythons capture group naming convention, it's not the Perl like syntax. -
`(?(1)(\btest\b)|(\bpie\b))` is what I was looking for, thanks. Is there any way to do this without a conditional? – sp00kyb00g13 Jul 31 '19 at 12:49
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2@sp00kyb00g13 `(?(1)(\btest\b)|(\bpie\b))` is a pattern that is equal to `pie`. Why do you need such a strange pattern? – Wiktor Stribiżew Jul 31 '19 at 12:52
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@WiktorStribiżew after looking at it more that was not what I was looking for, it just matches for pie as you said. – sp00kyb00g13 Jul 31 '19 at 13:00