What does this regexp do?

ruby-talk
1

I can't figure out what this does:
>> "1\n2\n3\n"[ /.\Z?/ ]
=> ""

I would expect it to output "1", just as:
>> "1\n2\n3\n"[ /.(\Z)?/ ]
=> "1"

Is this a bug?

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--
Daniel

2

Neither one of those make any sense. An optional end-of-string means
nothing. That second one is the same as [/./]

-- Mark.

···

On Oct 2, 10:11 am, Daniel DeLorme <dan...@dan42.com> wrote:

I can't figure out what this does:
>> "1\n2\n3\n"[ /.\Z?/ ]
=> ""

I would expect it to output "1", just as:
>> "1\n2\n3\n"[ /.(\Z)?/ ]
=> "1"

Is this a bug?