patch 8.2.0857: GTK cell height can be a pixel too much Commit: https://github.com/vim/vim/commit/5cd1cb9ff9d04979ff4cbc36ca8416d83364505d Author: Bram Moolenaar <Bram@vim.org> Date: Sun May 31 13:53:04 2020 +0200 patch 8.2.0857: GTK cell height can be a pixel too much Problem: GTK cell height can be a pixel too much. Solution: Subtract 3 instead of 1 when rounding. (closes https://github.com/vim/vim/issues/6168)

" Vim filetype plugin file
" Language:             Treetop
" Previous Maintainer:  Nikolai Weibull <now@bitwi.se>
" Latest Revision:      2011-03-14

if exists("b:did_ftplugin")
  finish
endif
let b:did_ftplugin = 1

let s:cpo_save = &cpo
set cpo&vim

setlocal comments=b:# commentstring=#\ %s formatoptions-=tcroq formatoptions+=l

let b:undo_ftplugin = "setl com< cms< fo<"

let &cpo = s:cpo_save
unlet s:cpo_save