Refreshed for mksh-r54, based on tg's patch

From 23712cea8e2a623fd952eb781df0011c501703d0 Mon Sep 17 00:00:00 2001
From: Thorsten Glaser <tg@mirbsd.org>
Date: Thu, 25 Jul 2013 22:07:33 +0200
Subject: [PATCH] Make default mkshrc file suitable for OpenWrt environment:

* Part of the FreeWRT patches:
  - no hostname(1)
  - ls(1) has no -o option
* OpenWrt and FreeWRT-1.0 fix:
  - since this is not ~/.mkshrc make sure subshells find it
---
Signed-off-by: Alif M. A. <alive4ever at live.com>
--- a/dot.mkshrc
+++ b/dot.mkshrc
@@ -28,8 +28,9 @@
 *) return 0 ;;
 esac
 
-PS1='#'; (( USER_ID )) && PS1='$'; \: "${TERM:=vt100}${HOSTNAME:=$(\ulimit -c \
-    0; hostname 2>/dev/null)}${EDITOR:=/bin/ed}${USER:=$(\ulimit -c 0; id -un \
+PS1='#'; (( USER_ID )) && PS1='$'; \: "${HOSTNAME:=$(</proc/sys/kernel/hostname\
+    )} = *([     ]|localhost) && HOSTNAME=$(\ulimit -c \
+    0; hostname 2>/dev/null)}${EDITOR:=/bin/vi}${USER:=$(\ulimit -c 0; id -un \
     2>/dev/null || \echo \?)}${MKSH:=$(\builtin whence -p mksh)}"
 HOSTNAME=${HOSTNAME%%*([	 ]).*}; HOSTNAME=${HOSTNAME##*([	 ])}
 [[ $HOSTNAME = ?(ip6-)localhost?(6) ]] && HOSTNAME=
@@ -52,7 +53,7 @@
 \alias l='ls -F'
 \alias la='l -a'
 \alias ll='l -l'
-\alias lo='l -alo'
+\alias lo='l -al'
 \alias doch='sudo mksh -c "$(\builtin fc -ln -1)"'
 \command -v rot13 >/dev/null || \alias rot13='tr \
     abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ \
@@ -600,4 +601,8 @@
 
 \unset p
 
+# we need this in OpenWrt for subshells that are not login shells
+\: ${ENV=/etc/mkshrc}
+[[ -z $ENV ]] || export ENV
+
 \: place customisations above this line