Re: [xmonad] Re: [patch] Fix URI escaping in X.A.Search

В сообщении от 29 апреля 2010 19:47:26 вы написали:

On Thu, Apr 29, 2010 at 7:29 AM, Khudyakov Alexey

wrote:

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В сообщении от 24 апреля 2010 00:57:29 вы написали:

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Hello

This patch fix URI escaping in X.A.Search. Non ASCII characters were not escaped. This patch modify escape function so it encodes as UTF8 and escapes all non-ASCII characters.

This is also a workaroud for bug in System.Process which doesn't properly encode strings and just truncate Chars to 1 byte.

Ping?

I looked at it earlier, and I wasn't so sure that this is entirely right. For example, in 'isAscii c && isAlphaNum c = [c]', isn't isAscii redundant? I thought all AlphaNum were ASCII.

No. It's necessary.

Prelude Data.Char> isAlphaNum 'ы' True

As well as that, I'm not confident about the use of encodeString. We had a long discussion about modify the 'spawn' functions to UTF-8 encode stuff, and the upshot was that it seemed like a bad idea? See http://www.haskell.org/pipermail/xmonad/2009-January/thread.html#7012

In this particular case it's right thing to do. According to RFC3986[1] all URLs should be first encoded in UTF-8 and then percent encoded. So xmonad just emits valid URL. Quote from RFC3986: Non-ASCII characters must first be encoded according to UTF-8 [STD63], and then each octet of the corresponding UTF-8 sequence must be percent- encoded to be represented as URI characters [1] http://tools.ietf.org/html/rfc3986