Hi Jean Louis: I assume this was fixed long ago in the V8 pre-releases that you follow. Please let us know and close this issue if so. Thanks, Bob From: Jean Louis Subject: bug#48931: Be explicit here. Make a statement or ask a question. To: 48931@debbugs.gnu.org Date: Wed, 09 Jun 2021 10:45:53 +0300 (33 weeks, 4 days, 8 hours ago) Resent-From: Jean Louis When trying to C-x C-f Debugger entered--Lisp error: (void-function hyperb:substitute-in-file-name) (hyperb:substitute-in-file-name filename) (if (string-match "\\(/\\|[^a-zA-Z0-9]\\)?\\(https?\\|ftp\\|telnet\\|news\\|n..." filename) (substring filename (match-beginning 2)) (hyperb:substitute-in-file-name filename)) substitute-in-file-name("~/Programming/emacs-lisp/my-business/lumb") completion--file-name-table("~/Programming/emacs-lisp/my-business/lumb" 41 completion--unquote) complete-with-action(completion--unquote completion--file-name-table "~/Programming/emacs-lisp/my-business/lumb" 41) #f(compiled-function (table) #)(completion--file-name-table) completion--some(#f(compiled-function (table) #) (completion--embedded-envvar-table completion--file-name-table)) read-file-name-internal("~/Programming/emacs-lisp/my-business/lumb" 41 completion--unquote) completion--nth-completion(1 "~/Programming/emacs-lisp/my-business/lumb" read-file-name-internal file-exists-p 41 (metadata (category . file) (completion--unquote-requote . t))) completion-try-completion("~/Programming/emacs-lisp/my-business/lumb" read-file-name-internal file-exists-p 41 (metadata (category . file) (completion--unquote-requote . t))) completion--do-completion(12 53) I use: Editor: GNU Emacs 28.0.50 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.24.29, cairo version 1.17.4) Hyperbole: 8.0.0pre Sys Type: x86_64-pc-linux-gnu OS Type: gnu/linux Window Sys: x News Reader: Gnus v5.13 -- Thanks, Jean Louis Take action in Free Software Foundation campaigns: https://www.fsf.org/campaigns