This workflow requires Kaleidoscope.
Setup
Install the workflow from the Kaleidoscope app.
In the menubar: Kaleidoscope
→ Integration…
→ Alfred
Usage
Compare the last two clipboard entries in Kaleidoscope via the ksclip
keyword.
Compare files via the Universal Action or configure the Hotkey to diff files selected in the Finder.
For files in the Buffer, use the configurable Hotkey or the kscomp
keyword.