From 50b37d4a27d3295a29afca2286f1a5a086142cec Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sun, 28 Apr 2024 11:49:46 +0200
Subject: Adding upstream version 3.2.1+dfsg.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 .../modules/unlang/pages/xlat/alternation.adoc     | 24 ++++++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 doc/antora/modules/unlang/pages/xlat/alternation.adoc

(limited to 'doc/antora/modules/unlang/pages/xlat/alternation.adoc')

diff --git a/doc/antora/modules/unlang/pages/xlat/alternation.adoc b/doc/antora/modules/unlang/pages/xlat/alternation.adoc
new file mode 100644
index 0000000..adb7604
--- /dev/null
+++ b/doc/antora/modules/unlang/pages/xlat/alternation.adoc
@@ -0,0 +1,24 @@
+= Alternation Syntax
+
+Alternation syntax similar to that used in Unix shells may also be
+used:
+
+`%{%{Foo}:-bar}`
+
+This code returns the value of `%{Foo}`, if it has a value.
+Otherwise, it returns a literal string bar.
+
+`%{%{Foo}:-%{Bar}}`
+
+This code returns the value of `%{Foo}`, if it has a value.
+Otherwise, it returns the expansion of `%{Bar}`.
+
+These conditional expansions can be nested to almost any depth, such
+as with `%{%{One}:-%{%{Two}:-%{Three}}}`.
+
+.Examples
+`%{%{Stripped-User-Name}:-%{User-Name}}` +
+`%{%{Framed-IP-Address}:-<none>}`
+
+// Copyright (C) 2020 Network RADIUS SAS.  Licenced under CC-by-NC 4.0.
+// Development of this documentation was sponsored by Network RADIUS SAS.
-- 
cgit v1.2.3

