bug#12618: 24.2.50; Formating of completion candidates in the *Completions* buffer

[martin rudalics]

>> I observe that the first <SPC> creates a *Completions* buffer with the
>> completion candidates formatted in 3 columns, whereas the second <SPC>
>> reformat those candidates so that the full with of the window is used
>> (6 columns in my case).
>
>> Why the first <SPC> didn't use the full width of the window?
>
> I think it's because when the text is first laid out, we don't know yet
> the dimensions of the window where it will be displayed (actually, that
> window doesn't even exist yet), so we assume a default 80-columns.
>
> For the second time, the *Completions* buffer is already displayed in
> a window, so the dimensions are available.
>
>> I think it should.
>
> Agreed, which means first display the buffer and then fill it.

I thought Tabulated List mode would handle that now.

martin