Yasuhiro Matsumoto wrote:
> On Saturday, July 9, 2016 at 5:20:16 AM UTC+9, Bram Moolenaar wrote:
> > I wrote:
> >
> > > Patch 7.4.2003
> > > Problem: Still cursor flickering when a callback updates the screen.
> > > (David
> > > Samvelyan)
> > > Solution: Put the cursor in the right position after updating the
> > > screen.
> > > Files: src/screen.c
> >
> > Looks like this fix triggers another cursor positioning problem.
> > When doing "rx" it first gets displayed in the right place, then drawn
> > two characters to the left. Not sure where that comes from yet...
>
> As your worries, this change doesn't work with multi-byte characters
> correctly. When the cursor goes down bottom of screen, and the cursor
> overwrap with trailing-byte of multi-byte, screen break drawing.
>
> [][][]_ []
> --------------- bottom line
> X[][][][]
>
> "_" is cursor.
>
> https://cloud.githubusercontent.com/assets/518808/19011184/a29ebeee-87c9-11e6-9d5e-032e9423b7ae.png
>
> gui.col should be fixed if the cursor is overwrapped on the
> trailing-byte of multibyte.
Thanks. I suppose it's not so easy to write a test for this.
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