I think this is a regexp bug

ruby-talk
1

I'd greatly appreciate if anyone could explain what's up with this:

$KCODE='u'
>> "à" =~ /à/i
=> 0
>> "à" =~ /[à]/i
=> 0
>> "ā" =~ /ā/i
=> 0
>> "ā" =~ /[ā]/i
=> nil

That has to be a bug, right?

Maybe this is a good opportunity to start looking at oniguruma. Is
anyone aware of backward compatibility issues when going from the regular Regexp to oniguruma?

Daniel

2

I can't reproduce it:

fxn@feynman:~/tmp$ cat foo.rb
$KCODE = 'u'
puts "à" =~ /à/i
puts "à" =~ /[à]/i
puts "ā" =~ /ā/i
puts "ā" =~ /[ā]/i
fxn@feynman:~/tmp$ ruby foo.rb
0
fxn@feynman:~/tmp$ ruby -v
ruby 1.8.5 (2006-12-25 patchlevel 12) [i686-darwin8.8.1]

···

On May 25, 2007, at 9:16 AM, Daniel DeLorme wrote:

I'd greatly appreciate if anyone could explain what's up with this:

$KCODE='u'
>> "à" =~ /à/i
=> 0
>> "à" =~ /[à]/i
=> 0
>> "ā" =~ /ā/i
=> 0
>> "ā" =~ /[ā]/i
=> nil

That has to be a bug, right?

3

Xavier Noria wrote:

I can't reproduce it:

fxn@feynman:~/tmp$ cat foo.rb
$KCODE = 'u'
puts "à" =~ /à/i
puts "à" =~ /[à]/i
puts "ā" =~ /ā/i
puts "ā" =~ /[ā]/i
fxn@feynman:~/tmp$ ruby foo.rb
0
fxn@feynman:~/tmp$ ruby -v
ruby 1.8.5 (2006-12-25 patchlevel 12) [i686-darwin8.8.1]

Ah, silly me I forgot to test on different versions. It
happens on 1.8.4 but neither on 1.8.5 or 1.8.6

Thanks for the sanity check.

Daniel