tree c67a9846b489dc67dba077a7951ae45984524217
parent a0fae84b85864d1b6eea4981de1529e708adee0d
author Mike Kasick <mike@kasick.org> 1327618471 -0500
committer Mike Kasick <mike@kasick.org> 1327618471 -0500

Don't export PS1 in /system/etc/mkshrc.

At present, when running a busybox shell ("busybox sh") from mksh
(/system/bin/sh), one gets the following message before every command line:

sh: precmd: Permission denied

This is due to mkshrc exporting a PS1 which depends on a mkshrc defined
function, "precmd".  Since "busybox sh" does not source mkshrc, it does not
have this function defined, resulting in the above error.

By not exporting PS1, "busybox sh" uses its own reasonable default.  mksh
subshells continue to work as usual, since they (re)source /etc/mkshrc
anyways.

Change-Id: Ic9182e42aa033e811300d9e6e8d6d3f43e14e58f