mooz/percol — pull request #5 by saitoha (2012-06-09 13:31:54+00:00)
Title: replace control characters with '?'

Hi.
percol terminates with an error when it accepts NULL character '¥x00',
and string length calculation seems to be something wrong with other control characters.
This patch will fix this issue by replacing control characters(except HT '¥x08') with "?".