Haskell Platform Proposal: add the 'text' library

Johan Tibell johan.tibell at gmail.com
Wed Oct 20 12:52:48 EDT 2010

On Wed, Oct 20, 2010 at 5:59 PM, Ian Lynagh <igloo at earth.li> wrote:
> On Wed, Oct 20, 2010 at 05:28:15PM +0200, Johan Tibell wrote:
>> If you process a string code point by code point you might mistakenly
>> confuse a plain "a" (A) with a "å" (A-RING *or* A + COMBINING RING).
> But isn't that what text does here?:
> Data.Text Data.Text.IO> let t = pack "z\x0061\x030A\x0061z"
> Data.Text Data.Text.IO> putStrLn t
> zåaz
> Data.Text Data.Text.IO> putStrLn (replace (pack "a") (pack "y") t)
> zẙyz

I think the right thing to do here is to perform normalization first
but I'm not sure. Some Unicode expert should chime in about what the
right semantics of 'replace' is.


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