Plan 9 from Bell Labs’s /usr/web/sources/contrib/yk/lab/slide/Slide-

Copyright © 2021 Plan 9 Foundation.
Distributed under the MIT License.
Download the Plan 9 distribution.


#!/usr/local/plan9/bin/rc
# see also S+
. /usr/local/plan9/bin/9.rc

cur = `{basename  $%}
prev = `{sed -n '/^' ^ $cur ^ '([ 	]|$)/{; x; p; q; }; h' index}
if(~ $#prev 0) {
	echo 'no prev page' >[1=2]
	exit 'no prev page'
}
Slide $prev

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Comments to [email protected].