>| expansion assumes | rules instead of > rules

[積丹尼 Dan Jacobson]

# su - nobody #create pristine bug testing environment
$ : >| /tmp/<TAB>
shows much less choices than
$ : > /tmp/<TAB>
It is probably wrongly assuming we want to see the
$ : | /tmp/<TAB>
choices!
BASH_VERSION='4.3.0(1)-release'
$ apt-cache policy bash-completion
bash-completion:
  Installed: (none)