Re: new:mbrtoc32.3: convert from to c32

[Radisson <Radisson97@gmx.de>]

Am 05.07.21 um 21:07 schrieb Alejandro Colomar (man-pages):
> Hello Bruno,
>
> On 7/4/21 12:26 PM, Bruno Haible wrote:
>>> mbrtoc32, c32rtomb \- convert between multibyte sequence and 32-bit
>>> wide character
>>
>> I would suggest two separate man pages for these functions.
>> Rationale:
>> It is rare that some code uses mbrtoc32 and c32rtomb in the same
>> function.
>> (Basically, functions that do input call mbrtoc32, and functions that do
>> output call c32rtomb.) And the description of mbrtoc32 is a bit complex.
>
> Okay.  Indeed, the *wc* functions are documented separately.

I beg your pardon,
we do not write a program, for the understanding of the function i found
it much helpful to see the from-to connection.

>
>>
>>> Are there any important differences compared to the already-documented
>>> and C99-compliant mbrtowc(3) and wcrtomb(3)?  I mean, apart from the
>>> types of the parameters. >
>> No for c32rtomb, but yes for mbrtoc32: mbrtowc has the special return
>> values (size_t)-1 and (size_t)-2, whereas mbrtoc32 also has the special
>> return value (size_t)-3. Although, on glibc currently this special
>> return value (size_t)-3 cannot occur. But IMO the man page should
>> mention it nevertheless, otherwise people write code that is not
>> future-proof.
>
> Thanks for those details!
>
> Regards,
>
> Alex
>
>