From: Pistos Christou <jesusrubsyou.5.pistos@...>
Date: 2006-03-11T02:01:02+09:00
Subject: Re: Small regexp question

francisrammeloo@hotmail.com wrote:
> irb(main):001:0> line = "class MyClass;"
> => "class MyClass;"
> irb(main):002:0> line =~ /^\s*class\s+(\w+)\s*[^;]/
> => 0
> irb(main):003:0> puts $1
> MyClas
> => nil

Try putting a $ on the end of your regexp.  What's happening is that 
your \w+ is matching up to "MyClas", and the final "s" is matching 
/[^;]/.

irb(main):029:0> line = "class MyClass;"
=> "class MyClass;"
irb(main):030:0> r = /^\s*class\s+(\w+)\s*[^;]/
=> /^\s*class\s+(\w+)\s*[^;]/
irb(main):031:0> line =~ r
=> 0
irb(main):037:0> l = Regexp.last_match
=> #<MatchData:0x40685ddc>
irb(main):038:0> puts l
class MyClass
=> nil
irb(main):033:0> r = /^\s*class\s+(\w+)\s*[^;]$/
=> /^\s*class\s+(\w+)\s*[^;]$/
irb(main):034:0> line =~ r
=> nil

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