commit https://github.com/vim/vim/commit/4b785f69c0616dba5d3f38e8ce4b5398cec89407 Author: Bram Moolenaar <Bram@vim.org> Date: Tue Nov 29 21:54:44 2016 +0100 patch 8.0.0105 Problem: When using ch_read() with zero timeout, can't tell the difference between reading an empty line and nothing available. Solution: Add ch_canread().

#! /bin/sh
#
# which.sh -- find where an executable is located.  It's here because the
# "which" command is not supported everywhere.  Used by Makefile.

IFS=":"
for ac_dir in $PATH; do
	if test -f "$ac_dir/$1"; then
		echo "$ac_dir/$1"
		break
	fi
done