Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Please briefly explain why you feel this question should be reported.
Please briefly explain why you feel this answer should be reported.
Please briefly explain why you feel this user should be reported.
I am trying to create a regex that does not match a word (a-z only) if the word has a : on the end but otherwise matches it. However, this word is in the middle of a larger regex and so I (don’t think) you can use a negative lookbehind and the $ metacharacter.
I tried this negative lookahead instead:
([a-z]+)(?!:)
but this test case
example:
just matches to
exampl
instead of failing.
If you are using a negative lookahead, you could put it at the beginning:
i.e: “match at least one a-z char, except if the following chars are 0 to n ‘a-z’ followed by a ‘:'”
That would support a larger regex:
would match in the following string:
only ‘XzzzY’