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?
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/// Bram Moolenaar -- [email protected] -- http://www.Moolenaar.net \\\
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