Hello, I found that Elisp lexer interprets Elisp escape sequence for ESC as something different. The backtrace I got eralier (not present here) points to line 328 in language/elisp/lexer.scm, I think get-character is wrong.
https://git.savannah.gnu.org/cgit/guile.git/tree/module/language/elisp/lexer.scm?h=v3.0.7#n328 Emacs: ---------------- *** Welcome to IELM *** Type (describe-mode) for help. ELISP> emacs-version "28.0.50" ELISP> ?\C-a 1 (#o1, #x1, ?\C-a) ELISP> "\C-a" "^A" ELISP> ?\C-\[ 27 (#o33, #x1b, ?\C-\[) ELISP> "\C-[" "^[" ---------------- Guile: ---------------- GNU Guile 3.0.7 Copyright (C) 1995-2021 Free Software Foundation, Inc. Guile comes with ABSOLUTELY NO WARRANTY; for details type `,show w'. This program is free software, and you are welcome to redistribute it under certain conditions; type `,show c' for details. Enter `,help' for help. elisp@(guile-user)> ?\C-a $1 = 1 elisp@(guile-user)> "\C-a" $2 = "\x01" elisp@(guile-user)> ?\C-\[ $3 = 67108955 elisp@(guile-user)> "\C-[" While reading expression: In procedure integer->char: Argument 1 out of range: 67108955 elisp@(guile-user)> ----------------
