It seems, there is no reliable way to work with numbers in a
locale-aware way in emacs. I am still against hard-coded list of
locales. Requirement to customize a variable is rather inconvenient.
Considering such properties as a part of translation is a little better
but I prefer to avoid it.
The question may be risen in emacs-devel but I am unsure if I will
participate in discussion.
On 18/05/2021 17:24, Utkarsh Singh wrote:
On 2021-05-16, 23:24 +0700, Maxim Nikulin wrote:
On 14/05/2021 21:54, Utkarsh Singh wrote:
On 2021-05-13, 00:08 +0700, Maxim Nikulin wrote:
Comma is decimal separator for es_ES, de_DE, ru_RU, etc. The point is
that order in which separator candidates are tried should depend on
active locale.
I am willing to work on this problem but before this can you identify
any other locale with similar problem or a resource from where I can
information's about locale.
I do not think list of locales should be hard coded. I am not familiar
with elisp enough to tell you if locale properties such as decimal
separator are exposed through some function. I expect, it is quite
probable. As a last measure, some number, e.g. 0.5 or 1.5 could be
formatted using a locale-aware function and result string could be
checked if it contains ",".
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");
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.