From: Jeremy Harris <jgh146exb@wizmail.org>
Date: Thu, 18 Feb 2021 22:00:46 +0000 (+0000)
Subject: Docs: yet more on $domain_data
X-Git-Tag: exim-4.95-RC0~126
X-Git-Url: https://git.exim.org/exim.git/commitdiff_plain/da5bb54c39af2b6bf43738518fb4c2c62af0edb7

Docs: yet more on $domain_data
---

diff --git a/doc/doc-docbook/spec.xfpt b/doc/doc-docbook/spec.xfpt
index 912d16dcb..1c9d17866 100644
--- a/doc/doc-docbook/spec.xfpt
+++ b/doc/doc-docbook/spec.xfpt
@@ -8788,6 +8788,13 @@ other statements in the same ACL.
 .cindex "tainted data" "de-tainting"
 The value will be untainted.
 
+.new
+&*Note*&: If the data result of the lookup (as opposed to the key)
+is empty, then this empty value is stored in &$domain_data$&.
+The option to return the key for the lookup, as the value,
+may be what is wanted.
+.wen
+
 
 .next
 Any of the single-key lookup type names may be preceded by