[kazinator]

I use AFL (American Fuzzy Lop) on TXR from time to time.

And, guess what, there was also a problem with nested backquotes. Backquote is spelled ^ (caret) in TXR Lisp, so the cases that were triggering the degenerate behavior had ^^^^^^^ rather than ```````...

http://www.kylheku.com/cgit/txr/commit/?id=ab98634ea89927220...

[stevekemp]

Small world. This is my bug-report, which meandered a little:

https://lists.gnu.org/archive/html/bug-gnu-emacs/2017-07/msg...