Re: bug#47885: [PATCH] org-table-import: Make it more smarter for interactive use

[Utkarsh Singh]

On 2021-05-18, 19:31 +0700, Maxim Nikulin <manikulin@gmail.com> wrote:

> The question may be risen in emacs-devel but I am unsure if I will 
> participate in discussion.

Why?

>> Can you test this function:
>> 
>> (defun org-table--comma-as-decimal-sep ()
>>    "Return nil or 2 if separator is dot or comma respectively."
>>    (string-search "," (format "%f" 10)))
>
> No, it does not work. `format' always uses dot. It is reasonable when 
> e.g. during writing a config file or during data exchange when locales 
> must be ignored.
>
> I was too optimistic. I did not expect that support of locales are so 
> poor in Emcacs. I do not see any traces of localeconv(3) in sources that 
> would allow to get value of decimal_point directly.
>
> Numbers are forced to use "C" locale and I have not noticed any way to 
> override it. Initial settings:
>
> http://git.savannah.gnu.org/cgit/emacs.git/tree/src/emacs.c#n1490
>
> http://git.savannah.gnu.org/cgit/emacs.git/tree/src/emacs.c#n2861
>
> setlocale (LC_NUMERIC, "C");
>

Hmm, so this means that Elisp cannot read something like this '10,1' as
floating point number.

>> To test I am using: $ LANG=de_DE.UTF-8 emacs -Q
>> 
>> But I am getting this as warning:
>> (process:1787): Gtk-WARNING **: 15:40:49.375: Locale not supported by C 
>> library.
>>      Using the fallback 'C' locale.
>
> You get this error due to you have not generated this locale. On debian 
> & ubuntu
>
> dpkg-reconfigure locales
>
> allows to select desired locales and performs all necessary actions.

Thanks!  I have fixed it now.

-- 
Utkarsh Singh
http://utkarshsingh.xyz