From: Robert Klemme <shortcutter@...>
Date: 2011-01-14T01:13:38+09:00
Subject: Re: Weird error using String#[]

On Thu, Jan 13, 2011 at 4:35 AM, Jason Mcdonald <finn0013@gmail.com> wrote:
> Nokogiri <i>is</i> easier... (see below)

Certainly!

> I would still like to know what exactly is causing the weird behavior in
> my original post though, if anyone knows. I can understand why encoding
> would result in incorrect parsing, but I don't understand why the
> encoding would mess up the hard coded portion of the call to puts still.

Can you provide a small program that exhibits the effect you are
seeing?  It is especially important to see how you calculate indexes.

Maybe this can help to illustrate a possible scenario:

Ruby version 1.9.2
irb(main):001:0> s = "aä"
=> "aä"
irb(main):002:0> s.encoding
=> #<Encoding:UTF-8>
irb(main):003:0> x = s.dup
=> "aä"
irb(main):004:0> x.encoding
=> #<Encoding:UTF-8>
irb(main):005:0> x.force_encoding "BINARY"
=> "a\xC3\xA4"
irb(main):006:0> x.encoding
=> #<Encoding:ASCII-8BIT>
irb(main):007:0> x[1,1]
=> "\xC3"
irb(main):008:0> s[1,1]
=> "ä"
irb(main):009:0>

Kind regards

robert

-- 
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