Java Community | Help. Code. Learn.•8mo ago

regex pattern

Want to match only .md files but not .skip.md files. Any idea of making such regex pattern. Thanks.

13 Replies

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0x150•8mo ago

^.*?(?<!\.skip)\.md$

webbdaysOP•8mo ago

thanks. can you explain it.

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webbdaysOP•8mo ago

any other way of doing it. another pattern

Kyo-chan•8mo ago

In theory sure, but that will be a monster That sort of things aren't really for regex when it starts being complicated or if you don't want negative backward groups

0x150•8mo ago

^   match start of input
.   match any character
 *? match previous token any amount of times, expanding as needed (lazy). you can remove the ?, it is not needed here
(?<! negative lookahead, aka "assert that the pattern in this group does not match
 \.skip ".skip"
)   close negative lookahead
\.md ".md"
$   match end of input

^   match start of input
.   match any character
 *? match previous token any amount of times, expanding as needed (lazy). you can remove the ?, it is not needed here
(?<! negative lookahead, aka "assert that the pattern in this group does not match
 \.skip ".skip"
)   close negative lookahead
\.md ".md"
$   match end of input

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webbdaysOP•8mo ago

Thanks.

JavaBot•8mo ago

webbdaysOP•8mo ago

i trying to avoid that lookahead thing. because, i am dealing with std regex in rust. in which its not supported. actually pattern is for datatest-stable. which is a test runner per file. datatest-stable uses std regex. so here is the problem. any other alternatives for datatest-stable which should give stability guaranties. not nightly. sorry its java server, but if any idea let me know.

Unknown User•8mo ago

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