Tweaks to handling of zero-length search strings
Tweaks to handling of zero-length search strings

Now we return a score of 1.0 for zero length search strings. (Previously
we relied on having an empty "offsets" array to detect this in the
"matches?" method, but we no longer have that array.)

Signed-off-by: Wincent Colaiuta <c76ac2e9cd86441713c7dfae92c451f3e6d17fdc@wincent.com>

mtimkovich/command-t,wincent/command-t,asoltys/command-t,lencioni/command-t,vrkansagara/command-t,tmeusburger/Command-T,yrro/command-t,vrkansagara/command-t,nkpart/command-t,tmeusburger/Command-T,nkpart/command-t,akitaonrails/Command-T,asoltys/command-t,supriyantomaftuh/command-t,nkpart/command-t,besarthoxhaj/command-t,besarthoxhaj/command-t,1234-/command-t,tmeusburger/Command-T,mtimkovich/command-t,yrro/command-t,lencioni/command-t,asoltys/command-t,supriyantomaftuh/command-t,akitaonrails/Command-T,simichaels/dotfiles,wincent/command-t,1234-/command-t,simichaels/dotfiles,akitaonrails/Command-T,wincent/command-t