On 8/29/13, Alexei Alexandrov <[email protected]> wrote:
> I am on Windows 7 64-bit using Vim 7.4 official 32-bit build
> downloaded from Vim site a couple days ago. I was using 7.3 before
> that.
>
> I noticed a redrawing issue that might be a regression.
>
> Steps to reproduce:
> * First, do preparation:
> Launch gvim -u NONE -U NONE --noplugin
> set nocompatible
> syntax on
> set ft=markdown
> set linespace=0
> set guifont=Courier_New
> * Then, go to Edit mode, type '_' (underscore) 10 times, then press
> Del 10 times to remove those. As a result of that you should get
> blank screen, but instead you get the lower horizontal line visible,
> see attachment.
>
> I guess it has to do with ClearType, but I believe there was no such
> issue in 7.3.
>
>
> --
> Alexei Alexandrov
I can reproduce this on Windows 8 64-bit in gVim 7.4, 7.3.829,
7.3.145, and even 7.2. So it's an old glitch, not a regression.
This seems to happen with any font when the lines are squeezed too
much vertically by setting 'linespace' to a low value. With Courier
New linespace needs to be 0 or less. With my favorite DejaVu Sans Mono
I have to set linespace to -1 to see this bug.
Setting 'linespace' to -2 will probably trigger this glitch with any font.
Instead of set ft=markdown it's sufficient to create an underline with
something like
syn match VisualNOS /_.*_/
then enter
_aaa________
position on the last _ and press x several times to delete.
Regards,
Vlad
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