Characters aren't being drawn sometimes

daa84 / neovim-gtk

gtk ui for neovim

GNU General Public License v3.0

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Characters aren't being drawn sometimes #254

Open jacobmischka opened 3 years ago

jacobmischka commented 3 years ago

For reasons I don't fully understand (looks like something related to the error icon created by ale in the gutter on the left), characters aren't being rendered sometimes.

Notice that the line number in the gutter and the => glyphicon don't display in nvim-gtk (bottom), while they both do in gnome-terminal (top):

Technical information (please complete the following information):

OS: Arch Linux
Neovim version: NVIM v0.4.4
Neovim-Gtk build version: master and 0af8952171c5375a4435cf3790e08c3b9ee29e8d (I'm extremely relieved this wasn't caused by my underline changes, ha)

jacobmischka commented 3 years ago

The issue does disappear when I disable ale, so I'm pretty confident that is what's causing it.

jacobmischka commented 3 years ago

This seems to happen whenever that character in the gutter is something more complex than ASCII. For example, if I change the icon from ⚠ to >> then it renders fine:

pitbuster commented 3 years ago

I can confirm that reverting to pango 1.44 solves the problem, as mentioned in #255. I wonder if this is an upstream bug in pango.

YaLTeR commented 3 years ago

I can confirm that reverting to pango 1.44 solves the problem, as mentioned in #255. I wonder if this is an upstream bug in pango.

Looking at other pango bug reports, they generally reply that unless it reproduces in gedit or pango-view it's likely an application issue (e.g. incorrect handling of glyph metrics).