Was this issue ever resolved (I still observe it...)?
On Friday, February 7, 2020 at 11:18:58 PM UTC+1 [email protected] wrote:
> Hi Bram,
>
>
> 2020/2/8 Sat 7:03:24 UTC+9 Bram Moolenaar wrote:
>>
>>
>> Ken Takata wrote:
>>
>> > `:help :!` says:
>> >
>> > Vim redraws the screen after the command is finished,
>> > because it may have printed any text. This requires a
>> > hit-enter prompt, so that you can read any messages.
>> > To avoid this use: >
>> > :silent !{cmd}
>> > < The screen is not redrawn then, thus you have to use
>> > CTRL-L or ":redraw!" if the command did display
>> > something.
>> >
>> > However, I think this is not accurate.
>> >
>> > If 't_ti' and 't_te' are set to empty, then `:silent !{cmd}` keeps
>> showing
>> > the
>> > output of the command. User needs to use CTRL-L to show the Vim screen
>> > again.
>> > (This behavior matches the help.)
>> >
>> > On the other hand, if 't_ti' and 't_te' are set to default, Vim uses
>> > alternate
>> > screen, then `:silent !{cmd}` shows a blank screen after the execution
>> of
>> > the
>> > command (even the command didn't display anything). User still needs to
>> use
>> > CTRL-L to show the Vim screen again.
>> > This behavior differs from the help, and I don't think it is useful at
>> all.
>> > How about restoring the Vim screen automatically when alternate screen
>> is
>> > enabled? E.g.:
>> >
>> > --- a/src/ex_cmds.c
>> > +++ b/src/ex_cmds.c
>> > @@ -1469,6 +1469,8 @@ do_shell(
>> > wait_return(term_console ? -1 : msg_silent == 0); // see below
>> > # else
>> > wait_return(msg_silent == 0);
>> > + if (swapping_screen() && msg_silent > 0)
>> > + redraw_later_clear();
>> > # endif
>> > no_wait_return = save_nwr;
>> > }
>> >
>> >
>> > The help should be also updated.
>>
>> The problem appears to be that t_te includes ESC [J, which clears the
>> screen. When I remove the ":silent !ls" command is OK.
>>
>> I wonder why it's in the default t_te entry. Can we just remove it?
>>
>
> In my environment, t_te is "^[[?1049l^[[23;0;0t".
> "^[[J" is not included.
>
> Regards,
> Ken Takata
>
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