Debugger entered--Lisp error: (args-out-of-range 0 1)
  parse-partial-sexp(1 0)
  #[257 "\301e\300\242\"\207" [(0) parse-partial-sexp] 4 "\n\n(fn IGNORED)"]((args-out-of-range 0 1))
  funcall(#[257 "\301e\300\242\"\207" [(0) parse-partial-sexp] 4 "\n\n(fn IGNORED)"] (args-out-of-range 0 1))
  syntax-ppss(0)
  electric-pair-syntax-info(nil)
  electric-pair-backward-delete-char(1 nil t)
  electric-pair-backward-delete-char-untabify(1 nil)
  call-interactively(electric-pair-backward-delete-char-untabify nil nil)
  command-execute(electric-pair-backward-delete-char-untabify)