defunkt/gist — pull request #151 by weakish (2013-10-31 06:05:57+00:00)
Title: Fix a bug causeing `gist -c` fails for xsel users.

Unlike `xclip`, calling `xsel` without any argument outputs the selection.
In other words, `xclip` defaults to `xclip -i`, but xsel` defaults to `xsel -o`.

Thus we should use `xsel -i` instead of `xsel` for copying the url to clipboard.