After leaving Eclipse and returning to Emacs due to lack of decent Scala support these two came in handy more than once:

  • Change encoding for saving the buffer:
    C-x RET f coding-system RET
  • Reread file with another encoding:
    C-x RET c coding-system RET M-x revert-buffer RET

A good reason to return to Emacs is the improving ENSIME mode.