Subject: Re: bug#57434: 28.1.91; Terminal Emacs Mac OS flickering.

From: Eli Zaretskii <[email-masked]>
Date: Tue, 30 Aug 2022 14:11:28 +0300

> From: Dmitrii Kuragin <[email-masked]>
> Date: Mon, 29 Aug 2022 13:25:06 -0700
> Cc: Gerd Möllmann <[email-masked]>, 
> 	[email-masked]
> 
> :~/Desktop% tput al; echo $?
> 0
> :~/Desktop% tput AL; echo $?
> 1%dL0
> :~/Desktop% tput dl; echo $?
> 0
> :~/Desktop% tput DL; echo $?
> 1%dM0
> :~/Desktop% tput sf; echo $?
> 
> 0
> 0~/Desktop% tput sr; echo $?
> :~/Desktop% tput wi; echo $?
> tput: unknown terminfo capability 'wi'
> 4
> :~/Desktop% tput cs; echo $?
> %p1%d;%p2%dr0
> :~/Desktop% tput cS; echo $?
> tput: unknown terminfo capability 'cS'
> 4
> ```
> 
> Seems like Mac Os doesn't support "wi", but the condition is still going to be true.

Emacs is supposed to use the alternative capabilities, as follows from
the condition for line_ins_del_ok flag to be set.  Does it indeed use
the other alternatives?