Help with regex

[bangor]

Hi Monks, I am trying to write a regex that will capture a mail id from a sendmail log file line. When there are a big number of multiple recipients their ids are listed over multiple lines and a number is added to the id:

# normal line
w7R9Kstc017510: split:

# split lines
w7R9Kstc017510[1]: split:
w7R9Kstc017510[2]: split:

The regex needs to capture both variations - this is what I tried:

/(\w+)(?:\[\d+\]): split:/

But that doesn't capture the normal line.

[1nickt]

Hi, you need to make the optional part optional:

perl -Mstrict -wlE '
my @str=("w7R9Kstc017510: split:","w7R9Kstc017510[1]: split:","w7R9Kst
+c017510[2]: split:");
for (@str) {
say "$_ matches" if /(\w+)(?:\[\d+\])?: split:/ 
#                               here ^
}
'
w7R9Kstc017510: split: matches
w7R9Kstc017510[1]: split: matches
w7R9Kstc017510[2]: split: matches

Hope this helps!

[bangor]

Thanks 1nickt, that works perfectly.

[haukex]

If you have a fairly modern browser, here's that regex in my "WebPerl Regex Tester" that I just released :-)