patch 8.2.1536: cannot get the class of a character; emoji widths are wrong Commit: https://github.com/vim/vim/commit/4e4473c927167fd24e5c8df90e0e8035080cf2da Author: Bram Moolenaar <Bram@vim.org> Date: Fri Aug 28 22:24:57 2020 +0200 patch 8.2.1536: cannot get the class of a character; emoji widths are wrong Problem: Cannot get the class of a character; emoji widths are wrong in some environments. Solution: Add charclass(). Update some emoji widths. Add script to check emoji widths.

new file mode 100644
--- /dev/null
+++ b/src/testdir/emoji_list.vim
@@ -0,0 +1,22 @@
+" Script to fill the window with emoji characters, one per line.
+
+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