> On 16 May 2018, at 18:13, Hans Åberg <haber...@telia.com> wrote:
> 
> 
>> On 16 May 2018, at 17:14, Steffen Nurpmeso <stef...@sdaoden.eu> wrote:
>> 
>> Joerg Schilling <joerg.schill...@fokus.fraunhofer.de> wrote:
>> |Steffen Nurpmeso <stef...@sdaoden.eu> wrote:
>> |>|> have some Unicode support.
>> |>|
>> |>|What do you expect: 
>> |>|
>> |>| strtol("\u4e00\u4e8c\u4e09", &endp, 0);
>> |>
>> |> The entire is*() family cannot work with multibyte or stateful
>> |> encodings, right.
>> |
>> |I asked a person who speaks japanese and he told me that
>> |
>> | "\u4e00\u4e8c\u4e09"
>> |
>> |is similar to
>> |
>> | "one two three"
>> |
>> |and this is not used for computing.
>> 
>> If i recall correctly this has been discussed already; if not here
>> then on the Unicode list.  Unicode brings quite a lot of
>> codepoints, like CIRCLED DIGIT ONE, PARENTHESIZED DIGIT ONE, DIGIT
>> ONE FULL STOP etc.  All these are marked "No", and i think the
>> discussion concluded that they should not be taken into account
>> when converting strings to numbers.

The intent may be that the value of the digit character c can be computed by 
the expression c - '0' when >= 0 and <= 9, and is otherwise a non-digit. Then 
'isdigit' and [[:digit:]] are tied to that, so it is impossible to use any 
other decimal digits.



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