[darcs patch] filepath: normalise trailing dot

[Neil Mitchell]

Hi Conrad,

Your proposal seems sensible (+1). Although in the past some people
complained about normalising away .'s being a bug in some corner
cases, so if anyone can find one of them I withdraw my support.

Creating a trac ticket is important so that the patch doesn't get lost.

Thanks, Neil

On Thu, Feb 11, 2010 at 8:22 AM, Conrad Parker <conrad at metadecks.org> wrote:
> Hi,
>
> the attached darcs patch modifies the behaviour of normalise to handle
> trailing dots in a path. The previous behaviour yielded this:
>
> Prelude System.FilePath> normalise "../."
> "../."
> Prelude System.FilePath> normalise ".././"
> ".././"
> Prelude System.FilePath> normalise ".././.."
> "../.."
>
> This patch modifies dropDots such that the check for (".":[]) only
> occurs once for the path, after which a driver function dropDots' is
> used which skips this check. Hence "." can be removed from the end of
> a longer path, but a path of just "." is unchanged.
>
> (my trac account is pending verification, I'll reply with a trac
> ticket # later if needed)
>
> cheers,
>
> Conrad.
>
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