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Date: Sat, 13 Mar 2010 11:45:15 +0100
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From: Rudolf Sykora <rudolf.sykora@gmail.com>
To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net>
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Subject: Re: [9fans] watching plumber
Topicbox-Message-UUID: e7b35662-ead5-11e9-9d60-3106f5b1d025

Hello,

having a rule in lib/plumbing with the action

plumb start 9 cat /home/ruda/CALC/manu/$1_source | plumb -i -d edit -a
action=showdata

I am getting this message when it is used

/home/ruda/CALC/systems/ni4ni4ni4_264_fcc001_2/rotxy/Cxy.eps
/home/ruda/CALC/systems/ni4ni4ni4_264_fcc001_2/rotzx/Czx.eps
cat: can't open |: No such file or directory

(somehow it appears in the terminal)
what am I doing wrong?

Also, as I am using p9p now, I don't know who interprets the part
after the 'plumb start'. I first, believing that rc does the job, had
e.g.
cat /home/ruda/CALC/manu/^$1^_source
there (note the ^s), but then those ^s stayed intact in the name
(which wasn't naturally found).

Btw. It quite surprised me that a line beginning with # is considered
as an empty line instead of being ignored. Thus when I commented out a
line inside a block of rules, the block was disintegrated into two,
which really didn't work. (So one must not comment out anything inside
a block, i.e. between the rules.)

Thanks for any comments!
Ruda