doc: Remove unnecessary whitespace in documentation examples

Also add a missing XML header.

https://bugzilla.gnome.org/show_bug.cgi?id=751648

3 files changed, 2 insertions, 23 deletions

diff --git a/doc/catalogintro.sgml b/doc/catalogintro.sgml
index 7cf91973..e15236c4 100644
--- a/doc/catalogintro.sgml
+++ b/doc/catalogintro.sgml
@@ -40,28 +40,22 @@ The catalog file starts by specifying the name of the catalog and the plugin
 library to use, the following examples assume you have a namespace "Foo" and
 are integrating an object "Frobnicator":
       <programlisting>
-<![CDATA[<glade-catalog name="foo" library="foo" depends="gtk+">
-
+<![CDATA[<?xml version="1.0" encoding="UTF-8"?>
+<glade-catalog name="foo" library="foo" depends="gtk+">
   <init-function>my_catalog_init</init-function>
 
   <glade-widget-classes>
-
     <glade-widget-class name="FooFrobnicator" generic-name="frobnicator" title="Frobnicator"/>
 
     ... widget classes go here
-
   </glade-widget-classes>
 
   <glade-widget-group name="foo" title="Foo">
-
     <glade-widget-class-ref name="FooFrobnicator"/>
-
     ... widget class references go here
-
   </glade-widget-group>
 
   ... widget groups go here
-
 </glade-catalog>]]></programlisting>
     </para>
 
diff --git a/doc/properties.sgml b/doc/properties.sgml
index c9388e83..2acc0b46 100644
--- a/doc/properties.sgml
+++ b/doc/properties.sgml
@@ -30,7 +30,6 @@ for editing purposes. Here is an example of the xml form:
     ... values here
 
   </displayable-values>
-
 </property>
 
 ...]]></programlisting>
diff --git a/doc/widgetclasses.sgml b/doc/widgetclasses.sgml
index 4a1156b9..3bf0ea35 100644
--- a/doc/widgetclasses.sgml
+++ b/doc/widgetclasses.sgml
@@ -31,57 +31,43 @@ A typical basic example of a widget class definition is as follows:
 Here is the complete example of the form of the `glade-widget-class' definition:
       <programlisting>
 <![CDATA[<glade-widget-class name="FooFrobnicator" generic-name="frobnicator" title="Frobnicator"/>
-
   <post-create-function>foo_frobnicator_plugin_post_create</post-create-function>
 
   ... widget class support functions go here
 
   <properties>
-
     <property id="frobnicated" default="False"/>
 
     ... property definitions go here
-
   </properties>
 
   <signals>
-
     <signal id="frobnicate" since="1.0"/>
 
     ... signal definitions go here
-
   </signals>
 
   <packing-properties>
-
     ... child packing property definitions go here
-
   </packing-properties>
 
   <actions>
-
     <action id="launch_editor" name="Edit Frob" stock="gtk-edit"/>
 
     ... context menu action definitions go here
-
   </actions>
 
   <packing-actions>
-
     ... context menu action definitions for child objects go here
-
   </packing-actions>
 
   <packing-defaults>
-
     <parent-class name="GtkVBox">
       <child-property id="expand" default="false"/>
     </parent-class>
 
     ... packing default definitions go here
-
   </packing-defaults>
-
 </glade-widget-class>]]></programlisting>
     </para>