I get an elisp error when I select a match from helm swoop (by pressing enter):
Symbol's value as variable is void: $buf
Is this a known bug in the current version of helm swoop or might I have something misconfigured?
I had the same problem today. I searched this problem from Github Issues so its quite new problem. It's fixed and merged to Melpa 9 days ago.
As you know just write list-packages and press U and X
Best Regards