This patch has been proposed upstream: https://lists.systemreboot.net/guile-email/87mtnv1r2p.fsf@gnu.org/T/#u. From c21fe0f0e28b80b606973d3e372e2bc8528c9766 Mon Sep 17 00:00:00 2001 From: Mathieu Othacehe Date: Wed, 29 Sep 2021 12:47:35 +0000 Subject: [PATCH 1/1] email: Do not use an empty bytevector to test the charset. Using an empty bytevector no longer throws an exception since this Guile commit: 5ea8c69e9153a970952bf6f0b32c4fad6a28e839. * email/email.scm (post-process-content-transfer-encoding): Use a bytevector containg the 'e' character to test the charset validity. --- email/email.scm | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/email/email.scm b/email/email.scm index 3f4e194..ac70463 100644 --- a/email/email.scm +++ b/email/email.scm @@ -832,7 +832,8 @@ values. The returned headers is a string and body is a bytevector." (define (valid-charset? charset) (catch #t (lambda () - (bytevector->string (make-bytevector 0 0) charset) + ;; Try to convert a bytevector containg the 'e' character. + (bytevector->string (make-bytevector 1 48) charset) #t) (const #f))) -- 2.33.0