After discussion with Guido, agreed to only support double-sided PostScript,

so we'll not need this shell whackery after all.

Doc/texoption.sh

-#! /bin/sh
-#
-#  Script to convert LaTeX2e documents to & from having a \documentclass{}
-#  option.
-
-VERBOSE=false
-SETOPTION=true
-FILES=`echo ???.tex`
-
-usage() {
-    exec >&2
-    echo "usage:	$0 [-d] [-v] option [files...]"
-    echo
-    echo "\t-d  disable option, if present"
-    echo "\t-v  tell which files are being edited, and how"
-    echo
-    echo "\tBy default, files... will be '???.tex'."
-    echo "\tThis will match each of the Python manuals."
-    echo
-    exit 2
-}
-
-editing() {
-    # tell the user what we're doing
-    if $VERBOSE ; then
-	echo $1 $FILE...
-    fi
-}
-
-addoption() {
-    # add an option not already present
-    editing "adding to"
-    (sed 's/^\(\\documentclass[[].*\)]/\1,'$OPTION']/
-s/^\\documentclass{/\\documentclass['$OPTION']{/' $FILE >temp-$$ \
-     && mv temp-$$ $FILE) || exit $?
-}
-
-remoption() {
-    # remove an option currently on
-    editing "removing from"
-    (sed 's/^\(\\documentclass[[].*\),'$OPTION'\([],]\)/\1\2/
-s/^\\documentclass[[]'$OPTION']/\\documentclass{/
-s/^\\documentclass[[]'$OPTION',/\\documentclass[/' $FILE >temp-$$ \
-     && mv temp-$$ $FILE) || exit $?
-}
-
-chkoption() {
-    # return true iff the option is already on
-    egrep '^\\documentclass[[]([A-Za-z0-9]*,)*'$OPTION'[],]' $FILE >/dev/null
-    return $?
-}
-
-# parse the command line...
-while [ "$#" -gt 0 ] ; do
-    case "$1" in
-	-d)
-	    SETOPTION=false
-	    shift
-	    ;;
-	-v)
-	    VERBOSE=true
-	    shift
-	    ;;
-	-*)
-	    usage
-	    ;;
-	*)
-	    break;
-	    ;;
-    esac
-done
-if [ -z "$1" ] ; then
-    usage
-fi
-
-# setup variables
-OPTION="$1"
-shift
-FILES=${1:+$*}
-if [ "$FILES" = '' ] ; then
-    FILES=`echo ???.tex`
-fi
-
-# check each file and do the work as required
-for FILE in $FILES ; do
-    if chkoption ; then
-	if $SETOPTION ; then
-	    :
-	else
-	    remoption
-	fi
-    elif $SETOPTION ; then
-	addoption
-    fi
-done