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#!/usr/local/plan9/bin/rc
# doctype: synthesize proper command line for troff
. 9.rc
troff=troff
eqn=eqn
prefer=prefer
opt=''
dev=''
while(~ $1 -*){
switch($1){
case -n;
troff=nroff
eqn=neqn
prefer='prefer -n'
case -T
dev=$1
case -*
opt=$opt' $1'
}
shift
}
ifs='
'{
files=`{echo $*}
}
grep -h '\$LIST|\|reference|^\.(EQ|TS|\[|PS|IS|GS|G1|GD|PP|BM|LP|BP|PI|cstart|begin|TH...)|^\.P$' $* |
sort -u |
awk '
BEGIN { files = "'$files'" }
/\$LIST/ { e++ }
/^\.PP/ { ms++ }
/^\.LP/ { ms++ }
/^\.EQ/ { eqn++ }
/^\.TS/ { tbl++ }
/^\.PS/ { pic++ }
/^\.IS/ { ideal++ }
/^\.GS/ { tped++ }
/^\.G1/ { grap++; pic++ }
/^\.GD/ { dag++; pic++ }
/^\.\[/ { refer++ }
/\|reference/ { prefer++ }
/^\.cstart/ { chem++; pic++ }
/^\.begin +dformat/ { dformat++; pic++ }
/^\.TH.../ { man++ }
/^\.BM/ { lbits++ }
/^\.P$/ { mm++ }
/^\.BP/ { pictures++ }
/^\.PI/ { pictures++ }
END {
x = ""
if (refer) {
if (e) x = "refer -e " files " | "
else x = "refer " files "| "
files = ""
}
else if (prefer) { x = "cat " files "| '$prefer'| "; files = "" }
if (tped) { x = x "tped " files " | "; files = "" }
if (dag) { x = x "dag " files " | "; files = "" }
if (ideal) { x = x "ideal -q " files " | "; files = "" }
if (grap) { x = x "grap " files " | "; files = "" }
if (chem) { x = x "chem " files " | "; files = "" }
if (dformat) { x = x "dformat " files " | "; files = "" }
if (pic) { x = x "pic " files " | "; files = "" }
if (tbl) { x = x "tbl " files " | "; files = "" }
if (eqn) { x = x "'$eqn' '$dev' " files " | "; files = "" }
x = x "'$troff' "
if (man) x = x "-man"
else if (ms) x = x "-ms"
else if (mm) x = x "-mm"
if (lbits) x = x "-mbits"
if (pictures) x = x " -mpictures"
x = x " '$opt' '$dev' " files
print x
}'
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