Regex for excluding files with specific pattern

Question

Hey I have a list of files

Now I need a regular expression filter only the files without -ext in the name.

I tried already this ^.+(?!-ext)\.xml$ but it is not working.

What am I doing wrong?

I tried `^(?!-ext).+\.xml$` This is still matiching all files — dj_thossi, Feb 16 '21 at 14:03

score 2 · Accepted Answer · answered Feb 16 '21 at 14:06

Not sure about your exact needs, but if you want to exclude those file where "-ext" is right before the xml extension I think you could use:

^.+(?<!-ext)\.xml$

See the demo

^ - Start string anchor.
.+ - 1+ character apart from newline.
(?<!-ext) - A negative lookbehind to assert position isn't preceded by "-ext".
\.xml - Match a literal dot and "xml".
$ - End string anchor.

score 0 · Answer 2 · answered Feb 16 '21 at 14:08

0

With the help of user 'The fourth bird' I found out the correct structure.

Here is the correct result

^(?!.*-ext).+\.xml$

answered Feb 16 '21 at 14:08

dj_thossi

2 Answers2