Regex - discard text after comma character

Question

If I have the text:

test: firstString, blah: anotherString, blah:lastString

How can I get the text "firstString"

My regex is:

 test:(.*),

EDIT Which brings back firstString, blah: anotherString, but I only need to bring back the text 'firstString'?

Answer 1

Use a non-greedy quantifier:

test:(.*?),

Or a character class:

test:([^,]*),

To ignore the comma as well:

test:([^,]*)

If you'd like to omit the test: as well you can use a look-behind like this:

(?<=test:\s)[^,]*

Since you're using this grok debugger, I was able to get this to work by using a named capture group:

(?<test>(?<=test:\s)[^,]*)