patch 8.1.1897: may free memory twice when out of memory commit https://github.com/vim/vim/commit/f1552d07d715b437d941659479942c2543b02bd4 Author: Bram Moolenaar <Bram@vim.org> Date: Wed Aug 21 12:54:18 2019 +0200 patch 8.1.1897: may free memory twice when out of memory Problem: May free memory twice when out of memory. Solution: Check that backslash_halve_save() returns a different pointer. (Dominique Pelle, closes #4847)

#! /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