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Re: Running script from directory with UTF-8 characters

From: Marko Rauhamaa
Subject: Re: Running script from directory with UTF-8 characters
Date: Tue, 22 Dec 2015 03:14:18 +0200
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/24.3 (gnu/linux)

Chris Vine <address@hidden>:

> I think the problem is that calling the native 'primitive-load'
> procedure on a filename with UTF-8 encoding with a character outside
> the ASCII range (when the locale encoding is also UTF-8) fails to work
> unless you call '(set-locale LC_ALL "")' in the program first.
> Of course you can't do that when passing guile a filename as a program
> argument. It does seem like a weakness, even if not a bug.

How can it not be a bug?

Also, Linux pathnames can contain any bytes other than NUL regardless of
the locale (and quite often do) so I hope Guile doesn't paint itself too
deep in the Unicode corner. Python is struggling with analogous issues
but has been careful to at least make it possible to deal with
bytevector pathnames and bytevector standard ports.

For example,

    scheme@(guile-user)> (opendir ".")
    $1 = #<directory stream f7ffa0>
    scheme@(guile-user)> (readdir $1)
    $4 = "?9t\x1b["
    scheme@(guile-user)> (open-file $4 "r")
    ERROR: In procedure open-file:
    ERROR: In procedure open-file: No such file or directory: "?9t\x1b["


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