#!/bin/sh
################################################################################
#ident  "@(#) view man pages with editor. John S. Urban, 19910321"
#
# view a man(1) page in an editor 
# more(1) and/or pg(1) are nice for beginners
# but more often than not it is much nicer to
# edit the man page if you are familiar with the
# vi editor (you loose highlighting).
# 
# 11950302: editor can be specified via common variables
#
# NOTE: some man(1) utilities let you select more(1) as
#       your pager, and some more(1) utilities let you
#       evoke vi(1) easily from within more(1).
################################################################################
#set -x
SCRATCH=/tmp/man.$$
trap "rm $SCRATCH; exit 2" 1 2 3 13 15
export SCRATCH
################################################################################
export MANPATH
MANPATH="$MANPATH:/tmp_mnt${HOME}/man:$HOME/man:/usr/local/man"
################################################################################
if ( test $# -eq 0 )
then
   # 
   case "`uname -s`" in
   *CYGWIN*)man -k \(|col -b > $SCRATCH;;
   *)man -k ' ' > $SCRATCH;;
   *)man -k '.' > $SCRATCH;;
   *)man -k '\('|col -b > $SCRATCH;;
   esac
else
   machine=`uname -s`
   case "${machine}" in
   #=========================================================================
   ULTRIX)
   /usr/ucb/man ${@}|col -b|expand > $SCRATCH
   ;;
   #=========================================================================
   sn[0-9]*|UNICOS)
   # module load PrgEnv mpt
   man -loub $* > $SCRATCH
   ;;
   #=========================================================================
   IRIX64)
   MANPATH="$MANPATH:/usr/share/catman"                      # root directory of on-line reference manual entry tree
   MANPATH="$MANPATH:/usr/share/catman/u_man/cat[1,6]/*"     # user manual pages
   MANPATH="$MANPATH:/usr/share/catman/a_man/cat[1,4,7]/*"   # system administrator manual pages
   MANPATH="$MANPATH:/usr/share/catman/p_man/cat[2-5]/*"     # programmer manual pages
   MANPATH="$MANPATH:/usr/share/catman/g_man/cat3/*"         # Graphics Library manual pages
   MANPATH="$MANPATH:/usr/share/catman/local/cat[1-8lnop]/*" # local pre-formatted manual entries
   MANPATH="$MANPATH:/usr/catman/local/man[1-8lnop]/*"       # local unformatted nroff(1) source manual entries
   MANPATH="$MANPATH:/usr/share/man/*"                       # additional unformatted manual pages
   
   man $*|col -b|expand > $SCRATCH
   ;;
   #=========================================================================
   SunOS)
   MANPATH="$MANPATH:/usr/share/man" # Solaris
   MANPATH="/usr/openwin/man:/usr/man:/opt/SUNWspro/man:$MATHPATH"
   man $*|col -b|expand > $SCRATCH
   ;;
   #=========================================================================
   HP-UX)
   man $*|col -b|expand > $SCRATCH
   ;;
   #=========================================================================
   *)
   man $*|col -b |grep -v '^No manual entry for '|expand|cat -s> $SCRATCH
   ;;
   #=========================================================================
   esac
fi
################################################################################
# select editor:
# use $FCEDIT, then $EDITOR, then vi
# $FCEDIT - edit mode for bash(1) and korn(1) shell
# $EDITOR - common variable used for this purpose (tcsh,...)
# $VISUAL - common variable used for this purpose (tcsh,...)
EDIT=${FCEDIT:-${EDITOR:-${VISUAL:-vi}}}
################################################################################
# some word counts use different orders
COUNT=`wc -l $SCRATCH|awk '{print $1}'`
[ ! -z $SCRATCH -a "$COUNT" -gt 1 ] && ${EDIT} $SCRATCH
rm -rf $SCRATCH
################################################################################
exit
################################################################################
################################################################################
if ( test $# -eq 0 )
then
   echo " 
////////////////////////////////////////////////////////////////////////////////
   format of command is:
   $0 topics
////////////////////////////////////////////////////////////////////////////////
   "
#=========================================================================