I've only just found out that it has the effect of treating the argv
words not as plain filenames, but as arguments to Perl default 'open',
i.e. if they end in | then the text before that is treated as a
command. That's not what was intended in any of these contexts!
Fortunately, in this project it only comes up in non-critical
'contrib' scripts.
If a PuTTY SSH packet log has gone through line-wrapping at 72
columns, destroying the long lines of the packet hex dumps, then this
script will reconstitute it as best it can, by reconstructing the
ASCII section at the end of the dump from the (hopefully) undamaged
hex part, and using that to spot wrapped lines and remove the
subsequent debris.
