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#!/usr/bin/env ruby
LINELENGTH = (ARGV.shift || 72).to_i
lines = $stdin.readlines
lines = lines.map { |line|
if line.length > (LINELENGTH-2) then
newlines = []
while line.length > (LINELENGTH-2) do
i = LINELENGTH-2
while line[i] != " " do
i -= 1
end
newlines << line[0...i]
line = line[i..-1]
end
newlines << line
newlines
else
line
end
}
lines = lines.flatten
lines = lines.map { |line|
"> #{line}"
}
puts lines
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