From: Brian Candler <b.candler@...>
Date: 2010-09-19T03:41:34+09:00
Subject: Re: Ruby regexpresion, error? :-(

iMelody Ooo wrote:
> Dear Brian Candler, thank you very much, but still have problem.
> 
> I read a line from file,want to macth ";"
> 
> f = File.open(filename)
> f.each do|line|
>   puts line
>   puts line.match( %r{;$})
>   puts line.match( %r{;\z})
>   puts line.match( %r{(.*);$})
>   puts line.match( %r{(.*);\Z})
> end
> 
> result:
> ABC DEF="";
> nil
> nil
> nil
> nil

Change
  puts line
to
  puts line.inspect

Then you'll see that the line you've read is probably

"ABC DEF=\"\";\n"

(i.e. there's a newline at the end. \" is how inspect shows a 
double-quote within a double-quoted string)

I would have expected %r{(.*);$} to match though:

>> line = "ABC DEF=\"\";\n"
=> "ABC DEF=\"\";\n"
>> line =~ %r{(.*);$}
=> 0

-- 
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