[exim-cvs] Docs: yet more on $domain_data

Gitweb: https://git.exim.org/exim.git/commitdiff/da5bb54c39af2b6bf43738518fb4c2c62af0edb7

Commit:     da5bb54c39af2b6bf43738518fb4c2c62af0edb7
Parent:     91738816c20ed0f456888ee7197024a5de3e44c9
Author:     Jeremy Harris <jgh146exb@???>
AuthorDate: Thu Feb 18 22:00:46 2021 +0000
Committer:  Jeremy Harris <jgh146exb@???>
CommitDate: Thu Feb 18 22:00:46 2021 +0000

    Docs: yet more on $domain_data
---
 doc/doc-docbook/spec.xfpt | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/doc/doc-docbook/spec.xfpt b/doc/doc-docbook/spec.xfpt
index 912d16d..1c9d178 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