Docs: duplicate description of lookup-style query syntax

diff --git a/doc/doc-docbook/spec.xfpt b/doc/doc-docbook/spec.xfpt
index 5122c97fbe5b2ae2c6d8d23cae6fd55c0645406b..4a044bb11fdb499799dab400cacf6fea2fbe8d4b 100644 (file)
--- a/doc/doc-docbook/spec.xfpt
+++ b/doc/doc-docbook/spec.xfpt
@@ -6724,6 +6724,12 @@ version of the lookup key.
 The &'query-style'& type accepts a generalized database query. No particular
 key value is assumed by Exim for query-style lookups. You can use whichever
 Exim variables you need to construct the database query.
+
+For the string-expansion kind of lookups, the query is given in the first
+bracketed argument of the &${lookup ...}$& expansion.
+For the list-argument kind of lookup the quury is given by the remainder of the
+list item after the first semicolon.
+
 .cindex "tainted data" "quoting for lookups"
 If tainted data is used in the query then it should be quuted by
 using the &*${quote_*&<&'lookup-type'&>&*:*&<&'string'&>&*}*& expansion operator