使用Perl正则表达式提取匹配项

Question

I am trying to extract the following string RL2.OPT.TEST.01 from this one a lot of text...[RL2.OPT.TEST.01]<some more text . Basically there can be anything before the RL2. but it always begins with RL2. , and always finish by either ] , < , or a space.

I tried with the following regex: m/RL2\\..*[\\s<\\]]+?$/g but even if it finds a match for the string -- [RL2.OPT.TEST.01] , it does not work for -- [RL2.OPT.TEST.01] some more text .

I need an array of all the resultings matches in the large string I have. I think I should also mention that this string has a lot of newline characters, but never in the middle of the strings I am trying to extract.

Any clue about what is wrong with my regex?

Answer 1

Use a negated character class and remove the end of the line anchor $

m/RL2\.[^\s<\]]*/g

DEMO

[^\\s<\\]]* Negated character class which matches any character but not of space or < or ] zero or more times.