On 2014-11-26, Marius Gedminas wrote:
> I'm pretty sure the problem is not related to diffexpr, but rather the
> :silent prefix in front of the shell command you're running.
>
> If I do
>
> :!sleep 1
>
> vim redraws the screen correctly.
>
> If I do
>
> :silent !sleep 1
>
> vim clears the screen and doesn't redraw it. This is in fact
> documented:
>
> ":silent" will also avoid the hit-enter prompt. When
> using this for an external command, this may cause the
> screen to be messed up. Use |CTRL-L| to clean it up
> then.
>
> although I don't understand why the seemingly-buggy behavior was
> documented rather than fixed.
Thank you very much! That pointed me to a workaround. I changed
the original command in my MyDiff() function,
silent execute "!diff -d -a --binary " . opt . v:fname_in . " "
\ . v:fname_new . " > " . v:fname_out
to
call system("diff -d -a --binary " . opt . v:fname_in . " "
\ . v:fname_new . " > " . v:fname_out)
and it's working perfectly so far.
The behavior of :silent does seem like a bug, though, because it
works fine (in this instance anyway) as long as screen-switching is
not enabled. It doesn't seem that refreshing of the screen should
be affected by having switched to the other screen and back.
Regards,
Gary
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