patch 8.2.0427: it is not possible to check for a typo in a feature name Commit: https://github.com/vim/vim/commit/7929651e05b081fe55e0e745725a7ad78c51be16 Author: Bram Moolenaar <Bram@vim.org> Date: Sun Mar 22 16:17:14 2020 +0100 patch 8.2.0427: it is not possible to check for a typo in a feature name Problem: It is not possible to check for a typo in a feature name. Solution: Add an extra argument to has().

INIT
WANTSTATE 

!Mouse reporting should not break by idempotent DECSM 1002
PUSH "\e[?1002h"
MOUSEMOVE 0,0 0
MOUSEBTN d 1 0
  output "\e[M\x20\x21\x21"
MOUSEMOVE 1,0 0
  output "\e[M\x40\x21\x22"
PUSH "\e[?1002h"
MOUSEMOVE 2,0 0
  output "\e[M\x40\x21\x23"