patch 8.2.3958: build failure compiling xxd with "-std=c2x" Commit: https://github.com/vim/vim/commit/ef089f50f9d6685c7a0ab94f9133576d7beec32b Author: Yegappan Lakshmanan <yegappan@yahoo.com> Date: Fri Dec 31 17:33:47 2021 +0000 patch 8.2.3958: build failure compiling xxd with "-std=c2x" Problem: Build failure compiling xxd with "-std=c2x". Solution: define _XOPEN_SOURCE. (Yegappan Lakshmanan, closes https://github.com/vim/vim/issues/9444)

#! /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