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Re: locale-dependent number parsing?

From: Mike Gran
Subject: Re: locale-dependent number parsing?
Date: Mon, 5 Apr 2010 10:19:29 -0700 (PDT)

>From: Linas Vepstas <address@hidden>
>I've found the following bug/feature with guile-1.8.7 and would like to 
>solicit for comments.
>Is this a guile bug? What's the proper work-around?
>I've got a C program that does a setlocale (LC_ALL, "");   printf ("%f", 
>In the de_DE.utf8 locale, the result of the print is 0,2000  using a comma, 
>the comma is the "decimal separator" in most European locales. This numeric 
>string is then passed to scm_eval_string() which pukes on it, because it does 
>recognize 0,2  as a valid number.    This can be confirmed at the guile 
>line interpreter, which pukes on guile> (+ 0,2 0,2)  but works fine on (+ 0.2 
>even in the de_DE locale. 
>Is this really the expected behaviour? Is there a suggested work-around?

I know that for the pre-2.0 Guile, I tried to punt that problem upstream to 
libunistring, but, it is not likely to be implemented in libunistring.

But, I never got around to working on it, myself.


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