FIX: Don't invoke tput if --columns is passed

[inkarkat]

Under certain circumstances (e.g. when run as a cron job), tput is not able to determine the columns (tput: unknown terminal "unknown"). For that, the columns can be explicitly set via --columns=N, and nowrap can still do its job. However, the tput lookup is still performed, and results in an error message (which even triggers an email for the cron job). Lookup of available terminal columns should only happen if the columns are not specified on the command-line; this also slightly improves performance.
Move the $column initialization to after the command-line argument parsing.

[goodell]

Thanks for the fix, Ingo, sorry it's taken me a while to take a proper look at it. Fix looks good to me, but I wanted a regression test too so I've added one as 6abdeb2. I'll merge the combo if my delta looks good to you.

Looks like the Travis CI is having a problem with the perl5.8 build for some reason, but that seems to be unrelated to your patch. I think I've got a workaround for it separately, should get posted later today.

[goodell]

perl5.8 CI is fixed as of 7e8c912

[inkarkat]

Thanks for adding a test; that's a good practice! I wonder why you've used nohup; unsetting TERM should be enough to make tput fail, isn't it?

The Perl 5.8 build seems to be still failing; I hope you can figure out that problem as well. Take your time; I'm more than happy that you're still maintaining this nice little tool!