From a16400919f9e589b7161372c3c97f56b5cf52091 Mon Sep 17 00:00:00 2001 From: Alexey Abramov Date: Tue, 8 Sep 2020 15:53:44 +0200 Subject: [PATCH] services: dovecot: Only serialize settings with non-empty values. * gnu/services/mail.scm (serialize-space-separated-string-list): Protocols might have custom settings, which are not supported by other protocols. To prevent dovecot/services from crashing, serialize settings that hold non-empty values only. Signed-off-by: Tobias Geerinckx-Rice --- gnu/services/mail.scm | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/gnu/services/mail.scm b/gnu/services/mail.scm index 3029a68663..291a2db8e1 100644 --- a/gnu/services/mail.scm +++ b/gnu/services/mail.scm @@ -99,7 +99,9 @@ (and (string? x) (not (string-index x #\space)))) val))) (define (serialize-space-separated-string-list field-name val) - (serialize-field field-name (string-join val " "))) + (match val + (() #f) + (_ (serialize-field field-name (string-join val " "))))) (define (comma-separated-string-list? val) (and (list? val)