#

# Copyright 2009 Sun Microsystems, Inc.  All rights reserved.

# Use is subject to license terms.

#

#

# This file is sourced by interactive ksh93 shells before ${HOME}/.kshrc

#

# Enable "gmacs"+"multiline" editor mode if the user did not set an

# input mode yet (for example via ${EDITOR}, ${VISUAL} or any

# "set -o" flag)

if [[ "$(set +o)" != ~(Er)--(gmacs|emacs|vi)( .*|) ]] ; then

	set -o gmacs

	# enable multiline input mode

	set -o multiline

	# enable globstar mode (match subdirs with **/)

	set -o globstar

fi

# Set a default prompt (<username>@<hostname>:<path><"($|#) ">) if

# then variable does not exist in the environment.

#

# Algorithm:

# 1. Define "ellipsis", either Unicode #2026 for unicode locales

# and "..." otherwise

# ([[ "${LC_ALL}/${LANG}" = ~(Elr)(.*UTF-8/.*|/.*UTF-8) ]]

# ensures that the pattern matches the leftmost sequence

# containing *.UTF-8, allowing to match either LC_ALL or

# LANG when LC_ALL is not set)

# 2. If PWD is within HOME replace value of HOME with '~'

# If the PWD is longer than 30 charatcers shorten it to 30 chars

# print '#' for user "root" and '$' for normal users

# Notes:

# - printf "%*s\r%s" COLUMNS "") # is used at the beginning to

#   work around a bug in the "multiline" handling code which

#   causes the shell to override its own prompt when the edit

#   line overflows (this happens if the terminal cursor

#   position is not 0 when PS1 is printed).

# - PS1 will initially be empty until either...

#   a) ... someone sets the variable

#       or

#   b) ... the prompt is displayed for the first time (default is

#     '$ ' for normal users and '# ' for user "root")

# - The statement below will not work if someone sources /etc/ksh.kshrc

#   unless PS1 gets "unset" first.

# - Make sure to use absolute paths (e.g. /usr/bin/hostname) to make

#   sure PS1 works in cases where PATH does not contain /usr/bin/

if [[ "$(set)" != ~(E)PS1= && "${PS1}" == '' ]] ; then

	PS1='$(set +o xtrace +o errexit

                printf "%*s\r%s" COLUMNS ""

                printf "%s@%s:" "${LOGNAME}" "$(/usr/bin/hostname)"

		ellip="${

			[[ "${LC_ALL}/${LANG}" == ~(Elr)(.*UTF-8/.*|/.*UTF-8) ]] &&

				printf "\u[2026]\n" || print "..." ; }"

		p="${PWD/~(El)${HOME}/\~}"

		(( ${#p} > 30 )) &&

			print -r -n -- "${ellip}${p:${#p}-30:30}" ||

			print -r -n -- "${p}"

		[[ "${LOGNAME}" == "root" ]] && print -n "# " || print -n "\$ "

		)'

fi