Tcl text processing: Python 3.10 variants

[Zhenfu Shi]

Thanks. I’ll try if I can to your latter suggestion later, the portfile also uses this line with ${python.version} so it might not be that easy.

Zhenfu

> On Mar 21, 2022, at 16:13, Joshua Root <jmr at macports.org> wrote:
> 
> On 2022-3-22 06:51 , Zhenfu Shi wrote:
>> Hi all,
>> I’m trying to add Python 3.10 variant to a few ports, but one of them (mpv) uses `set python_branch [join [split ${ver} {}] ".”]` to convert branch strings to version strings, resulting in “310” being converted to “3.1.0”. Can anyone advise how to change this line so it gives “3.10” without breaking compatibility with older Python versions?
> 
> Something like this works:
> 
> [string index $ver 0].[string range $ver 1 end]
> 
> However, it would be more reliable for mpv to start with versions containing dots and strip them out when needed; something like:
> 
> set python.versions [list 3.8 3.9 3.10]
> foreach ver ${python.versions} {
>    set ver_nodot [string map {. ""} $ver]
>    ...
> }
> 
> - Josh