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#!/bin/sh
# This file is public domain.
# Merge the constituent files with xeplain.tex to produce eplain.tex.
# Usually we are called from the Makefile, and the `version' variable is set.
if test -z "$version"; then
echo "No version number, using xx!"
version=xx
fi
btxtmp=/tmp/mergebtx$$
common1tmp=/tmp/mergec1$$
common2tmp=/tmp/mergec2$$
common3tmp=/tmp/mergec3$$
eplaintmp=/tmp/mergepl$$
arrow1tmp=/tmp/mergea1$$
arrow2tmp=/tmp/mergea2$$
pathtmp=/tmp/mergepa$$
ifpdftmp=/tmp/mergeif$$
rm -f eplain.tex
# Use this regexp to strip comments with egrep.
commentre='^ *%([^%]|$)'
# Extract the relevant parts of btxmac.tex (without comments).
egrep -v "$commentre" btxmac.tex \
| sed -n \
-e "1,/^%% \[\[\[start .*\]\]\]/w $common1tmp" \
-e "/^%% \[\[\[start .*\]\]\]/,/^%% \[\[\[end .*\]\]\]/w $btxtmp" \
-e "/^%% \[\[\[end .*\]\]\]/,\$w $common2tmp"
# Get texnames.sty and path.sty. Remove the announcement, as well as
# the comments.
egrep -v "$commentre|immediate" texnames.sty > $common3tmp
egrep -v "$commentre|immediate" path.sty > $pathtmp
# Get arrow.tex.
egrep -v "$commentre" arrow.tex \
| sed -n \
-e '1,/catcode.*\&.*4/w '"$arrow1tmp" \
-e '/catcode.*\&.*4/,$w '"$arrow2tmp"
# Get ifpdf.sty
egrep -v "$commentre"'|^ {0,6}\\immediate' ifpdf.sty > $ifpdftmp
# Merge the above into xeplain, calling the result eplain. Also change the
# `filename' in the comment.%%
egrep -v "$commentre" xeplain.tex \
| sed -e 's/"xeplain.tex"/"eplain.tex"/' \
-e "/^%% \[\[\[here is the first.*\]\]\]/r $common1tmp" \
-e "/^ %% \[\[\[here are the BibTeX.*\]\]\]/r $btxtmp" \
-e "/^%% \[\[\[here is the second.*\]\]\]/r $common2tmp" \
-e "/^%% \[\[\[include texnames.*\]\]\]/r $common3tmp" \
-e "/^%% \[\[\[include path.*\]\]\]/r $pathtmp" \
-e "/^ %% \[\[\[include arrow1\]\]\]/r $arrow1tmp" \
-e "/^ %% \[\[\[include arrow2\]\]\]/r $arrow2tmp" \
-e "/^%% \[\[\[include ifpdf.*\]\]\]/r $ifpdftmp" \
> $eplaintmp
# Remove our [[[...]]] markers and \endinput's.
egrep -v '\[\[\[|^ *$|\\endinput' $eplaintmp > eplain.tex
# Fix header fields.
./add-date eplain.tex
./add-version $version eplain.tex
./fix-checksum eplain.tex
# Old checksum computation:
#checksum=`wc < $eplaintmp | sed -n "s/^ *//"`
# Replace the checksum in the old file. We really should loop here,
# since one iteration may not be enough. Only replace the first
# checksum, since the second is for btxmac.
#sed -e "1,50s/checksum = .*,/checksum = \"$checksum\",/" $eplaintmp \
# > eplain.tex
chmod a-w eplain.tex
#ls -lt btxmac.tex path.sty texnames.sty xeplain.tex eplain.tex arrow.tex
#wc eplain.tex
#grep 'checksum.*=' eplain.tex
rm -f $btxtmp $eplaintmp $common1tmp $common2tmp $common3tmp
rm -f $arrow1tmp $arrow2tmp $pathtmp $ifpdftmp
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