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-rw-r--r--lib/sasl/doc/src/appup.xml24
1 files changed, 19 insertions, 5 deletions
diff --git a/lib/sasl/doc/src/appup.xml b/lib/sasl/doc/src/appup.xml
index 770b7c2492..bacfaa76ef 100644
--- a/lib/sasl/doc/src/appup.xml
+++ b/lib/sasl/doc/src/appup.xml
@@ -4,7 +4,7 @@
<fileref>
<header>
<copyright>
- <year>1997</year><year>2011</year>
+ <year>1997</year><year>2012</year>
<holder>Ericsson AB. All Rights Reserved.</holder>
</copyright>
<legalnotice>
@@ -56,12 +56,20 @@
the application.</p>
</item>
<item>
- <p><c>UpFromVsn = string()</c> is an earlier version of
- the application to upgrade from.</p>
+ <p><c>UpFromVsn = string() | binary()</c> is an earlier
+ version of the application to upgrade from. If it is a
+ string, it will be interpreted as a specific version
+ number. If it is a binary, it will be interpreted as a
+ regular expression which can match multiple version
+ numbers.</p>
</item>
<item>
- <p><c>DownToVsn = string()</c> is an earlier version of
- the application to downgrade to.</p>
+ <p><c>DownToVsn = string() | binary()</c> is an earlier
+ version of the application to downgrade to. If it is a
+ string, it will be interpreted as a specific version
+ number. If it is a binary, it will be interpreted as a
+ regular expression which can match multiple version
+ numbers.</p>
</item>
<item>
<p><c>Instructions</c> is a list of <em>release upgrade instructions</em>, see below. It is recommended to use
@@ -70,6 +78,12 @@
creating the <c>relup</c> file.</p>
</item>
</list>
+ <p>In order to avoid duplication of upgrade instructions it is
+ allowed to use regular expressions to specify the <c>UpFromVsn</c>
+ and <c>DownToVsn</c>. To be considered a regular expression, the
+ version identifier must be specified as a binary, e.g.</p>
+ <code type="none">&lt;&lt;"2\\.1\\.[0-9]+">></code>
+ <p>will match all versions <c>2.1.x</c>, where x is any number.</p>
</section>
<section>