patch 8.1.1125: libvterm does not handle the window position report commit https://github.com/vim/vim/commit/fa1e90cd4d1bebd66da22df4625f70963f091f17 Author: Bram Moolenaar <Bram@vim.org> Date: Sat Apr 6 17:47:40 2019 +0200 patch 8.1.1125: libvterm does not handle the window position report Problem: Libvterm does not handle the window position report. Solution: Let libvterm call the fallback CSI handler when not handling CSI sequence. Handle the window position report in Vim.

" gvimrc for test_gui_init.vim

if has('gui_athena') || has('gui_motif') || has('gui_gtk2') || has('gui_gtk3')
  set guiheadroom=0
  set guioptions+=p
endif