bug#34524: wc: word count incorrect when words separated only by no-break space

[Pádraig Brady]

On 09/03/19 05:52, Bruno Haible wrote:
> Hi Pádraig,
> 
>>>> In regard to options for enabling various behaviors for wc(1),
>>>> I'm thinking we might keep the strict POSIX isspace() behavior
>>>> with LC_CTYPE=C and/or POSIXLY_CORRECT=1, and use iswnbspace()
>>>> by default
> 
> Since you plan to add a --words=... option in the future (as suggested
> by Paul or me), it would make sense to add this option now, instead
> of testing POSIXLY_CORRECT. If you introduce POSIXLY_CORRECT dependent
> behaviour now (and need to keep it for backward-compatibility), you'll
> have a hard to understand interface: What will the following do?
> 
>   env POSIXLY_CORRECT=1 wc --words=unicode
>   wc --words=unicode

Well until we actually support more contextual
unicode word separation operation, the --words
option parameter would be a bit redundant.
Generally no-one would need to use POSIXLY_CORRECT
directly with wc, rather setting it globally
on a system or script to minimize changes.

In the above example --words=unicode would be
an explicit option to operate in extension to POSIX,
and so POSIXLY_CORRECT would be ignored there.

cheers,
Pádraig