what is it for
local ranges = imgui.GetIO().Fonts:GetGlyphRangesDefault()
if I leave it in nil I don't see any problem, then what is its function?
imgui.GetIO().Fonts:AddFontFromFileTTF(path, 18, nil, nil)
I'm not Russian so I don't use this Get Glyph Ranges Cyrillic, but what function...