<sigh> can someone recommend a good reference for sed?  the usd
section lacks anything more than simple examples, the unix programming
environment doesn't help much more, the o'reilly book is more awk than
sed, and the man pages lacks for examples (yes, i know all the man
pages could do with some).

i got more (but not much more) from reading all the .sed files in the
source tree, i know it can do much more than those scripts do
(although .../src/bin/sed/TEST is pretty good).

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