testssed|⇒ cat run.sh
#! /bin/sh
# index.edit -- compile list of index entries for editing.
grep "^\.XX" $* | sort -u |
sed '
s/^\.XX \(.*\)$/\/^\\.XX \/s\/\1\/\1\//'
testssed|⇒ cat test
.XX "sed, substitution command"
testssed|⇒ ./run.sh test
/^\.XX /s/"sed, substitution command"/"sed, substitution command"/