patch 8.2.1647: Vim9: result of expression with && and || is not a bool Commit: https://github.com/vim/vim/commit/4ed124cc6c0c55385c3b2fed9f9357baf42edbcc Author: Bram Moolenaar <Bram@vim.org> Date: Wed Sep 9 20:03:46 2020 +0200 patch 8.2.1647: Vim9: result of expression with && and || is not a bool Problem: Vim9: result of expression with && and || cannot be assigned to a bool variable. Solution: Add the TTFLAG_BOOL_OK flag and convert the value if needed.

" Script to fill the window with emoji characters, one per line.
" Source this script: :source %

if &modified
  new
else
  enew
endif

" Use a compiled Vim9 function for speed
def DoIt()
  let lnum = 1
  for c in range(0x100, 0x1ffff)
    let cs = nr2char(c)
    if charclass(cs) == 3
      setline(lnum, '|' .. cs .. '| ' .. strwidth(cs))
      lnum += 1
    endif
  endfor
enddef

call DoIt()
set nomodified