You need to specify the 'g' option to get all occurences, but sometimes relying on $1, etc. is overkill: 
my $a = "this is a test [[1]] [[ a ]] [[ abd ]] [[\%object,key]]";
print $_,$/ for $a =~ /(\[\[[^\]]+\]\])/g;

__DATA__
[[1]]
[[ a ]]
[[ abd ]]
[[%object,key]]

[download]
UPDATE: Haven't you people read Death to Dot Star!? ;) Seriously, while a non-greedy dot star works does work for this example, i cannot recommend using it when there is a better solution: a negated character class ([^\]]+).

jeffa

L-LL-L--L-LL-L--L-LL-L--
-R--R-RR-R--R-RR-R--R-RR
B--B--B--B--B--B--B--B--
H---H---H---H---H---H---
(the triplet paradiddle with high-hat)

In reply to (jeffa) Re: Regular Expression Pieces by jeffa
in thread Regular Expression Pieces by Angel

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