Re: [TCLCORE] TIP 716 ready for comments

[Jan N. <jan...@gm...>]

Op wo 16 apr 2025 om 13:35 schreef Harald Oehlmann:
> thanks for the hint. I have now replaced it with the idom introduced in
> Tcl 8.0 (at least Tcl 8.4):
>
> Tcl_WinUtfToTChar( pStr, lStr, &sPar1);

That's fine too. Tcl_WinUtfToTChar is platform-dependant
(Windows-only), and  works fine.

The function Tcl_WinTCharToUtf() (the other way round)
has the strange property that the "length" parameter
must be specified in "bytes", not in WCHAR's. That's
one source of confusion. Another one is that
Tcl_WinUtfToTChar and Tcl_WinTCharToUtf don't
accept -1 as length parameter, which should mean
"until the terminating NULL". Tcl_UtfToWCharDString()
is much more useful than Tcl_WinTCharToUtf().

> The migration:
> https://core.tcl-lang.org/tcl/wiki?name=Migrating+C+extensions+to+Tcl+9&p
> does not tell anything on this...

So, that should be extended. All is described here:
     <https://core.tcl-lang.org/tips/doc/trunk/tip/548.md>

Hope this helps,
       Jan Nijtmans