Environment: OS X Yosemite 10.10.3, Sublime Text 2.0.2, Pages 5.5.3, Firefox 38.0.5
Observation: When I find a word in Sublime Text 2 / Pages, and switch to Firefox, wanting to search the same word on page, I notice that the search box is automatically filled with that word, without needing to use clipboard.
I can confirm that I didn't accidentally press Cmd ⌘ C or Cmd ⌘ V .
This also works the other way, but Sublime Text 2 / Pages only knows a part of the word.
I'm guessing this is a system-level behavior. Just why is this? And why do other program don't know the full word?