#!/usr/bin/sed -f

## (c) Carlos Duarte ## Created: 04-Aug-96 ## Updated: - ##

# center 
#
# center all lines of a file, on a 80 columns width
# 
# to change that width, the number in \{\} must be replaced, and the number
# of added spaces also must be changed
# 



# del leading and trailing spaces
y/	/ /
s/^ *//
s/ *$//

# add 80 spaces to end of line
s/$/          /
s/ *$/&&&&&&&&/

# keep 1st 80 chars
s/^\(.\{80\}\).*$/\1/

# split trailing spaces, into two halves, 1st for beg, 2nd to end of line
s/\( *\)\1$/#\1%\1/
s/^\(.*\)#\(.*\)%\(.*\)$/\2\1\3/