Regular expression for a JIRA identifier

Question

I\'m trying to extract a JIRA identifier from a line of text.

JIRA identifiers are of the form [A-Z]+-[0-9] - I have the following pattern:

foreach m         


        

Answer 1

You can make sure that character before your pattern is either a whitespace, or the beginning of the string using alternation. Similarly make sure, it is followed by either whitespace or end of the string.

You can use this regex:

my ( $id ) = ( $line =~ /(?:\s|^)([A-Z]+-[0-9]+)(?=\s|$)/ );