commit https://github.com/vim/vim/commit/17a13437c9414a8693369a97f3be2fc8ad48c12e Author: Bram Moolenaar <Bram@vim.org> Date: Sun Jan 24 14:22:10 2016 +0100 patch 7.4.1163 Problem: Expressions "0 + v:true" and "'' . v:true" cause an error. Solution: Return something sensible when using a special variable as a number or as a string. (suggested by Damien)

" Test for expression comparators.   vim: set ft=vim :


STARTTEST
:so small.vim
:try
:  let oldisident=&isident
:  set isident+=#
:  if 1 is#1
:    $put ='ok'
:  else
:    $put ='ng'
:  endif
:finally
:  let &isident=oldisident
:endtry
:"
:/^marker/+1,$wq! test.out
ENDTEST

marker