Regex matching up until comma

Question

I have some input strings where I want to just get the city names (Brighton, Singapore, Austin, San Francisco)

Brighton, United Kingdom
Singapore
Austin, TX, USA
San Francisco, CA, USA

I've tried doing this regex (.*),? but it matches the whole string, disregarding the comma. How can I only match up till the first comma if it exists?

Use a non-greedy quantifier: `(.*?),?` – Nick Reed Feb 15 '21 at 21:03 — Nick Reed, Feb 15 '21 at 21:03

score 0 · Accepted Answer · answered Feb 15 '21 at 21:03

0

You can use

(?m)^[^\r\n,]+

See the regex demo.

Details

(?m)^ - start of a line
[^\r\n,]+ - one or more chars other than CR, LF and a comma.

answered Feb 15 '21 at 21:03

Wiktor Stribiżew

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If there is anything wrong with the answer, please drop a comment. Please bear in mind that this regex is a valid solution for the OP problem, and your current scenario may differ from OP. – Wiktor Stribiżew May 19 '23 at 12:22
Again, what is wrong with this solution? – Wiktor Stribiżew May 19 '23 at 18:06

Regex matching up until comma

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