From 7d7ec2b3a87e8a26215fc67cd5431330c6ab4615 Mon Sep 17 00:00:00 2001
From: zimbatm <zimbatm@zimbatm.com>
Date: Wed, 21 Sep 2016 11:36:03 +0100
Subject: Document the { __toString } interface

---
 doc/manual/expressions/builtins.xml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'doc')

diff --git a/doc/manual/expressions/builtins.xml b/doc/manual/expressions/builtins.xml
index 6ac802343..9517f2010 100644
--- a/doc/manual/expressions/builtins.xml
+++ b/doc/manual/expressions/builtins.xml
@@ -995,9 +995,9 @@ in foo</programlisting>
     <listitem><para>Convert the expression
     <replaceable>e</replaceable> to a string.
     <replaceable>e</replaceable> can be a string (in which case
-    <function>toString</function> is a no-op) or a path (e.g.,
+    <function>toString</function> is a no-op), a path (e.g.,
     <literal>toString /foo/bar</literal> yields
-    <literal>"/foo/bar"</literal>.</para></listitem>
+    <literal>"/foo/bar"</literal> or a set containing <literal>{ __toString = self: ...; }</literal>.</para></listitem>
 
   </varlistentry>
 
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