[xml] Problem with XML output formatting

[Petyo Milotinov <petyo securax org>]

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        Hello!
        I want to parse an existing XML document. Here is how the XML should
look like:

<options>
    <general>
        <value1>some text</value1>
        <value2>another text</value2>
        <value3>another text 2</value3>
    </options>
</general>

        I remove a node in this way (node is pointing to "general" node):

if ( !xmlStrcmp( node->name, (const xmlChar*)"value2") )
{
        xmlNodePtr node_to_del = node;
        node = node->next;
        
        xmlUnlinkNode( node_to_del );
        xmlFreeNode( node_to_del );
        
        continue;
}

        But when I save the file with xmlSaveFormatFile( CONF_FILE, doc, 1 ) a
blank line appears:

<options>
    <general>
        <value1>some text</value1>
        
        <value3>another text 2</value3>
    </options>
</general>

        I'm inserting a new node in this way (orig_node is same as node):

xmlNewChild( orig_node, NULL, (const xmlChar*)"value4", (const
xmlChar*)"Just another text" );

        And here is the result in saved file:

<options>
    <general>
        <value1>some text</value1>
        
        <value3>another text 2</value3>
    <value3>another text 2</value3></options>
</general>

        There is no problem to parse and edit the file in my program. But I'm
trying to make a config file and it is possible someone to edit it so I
want to make an ordered output.
        What is wrong with my code?
        Thanks in advance!

        Best regards,
        Petyo Milotinov
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