(innermost/terminating) indents in xmllint not enough
simon@fedora:~/Documents$ xmllint --format a1.xml
<?xml version="1.0"?>
<a>
<a>
<a>
<a>
</a>
</a>
</a>
</a>
simon@fedora:~/Documents$ cat a1.xml
<?xml version="1.0"?>
<a>
<a>
<a>
<a>
</a>
</a>
</a>
</a>
simon@fedora:~/Documents$ xmllint --version
xmllint: using libxml version 21105
compiled with: Threads Tree Output Push Reader Patterns Writer SAXv1 FTP HTTP DTDValid HTML Legacy C14N Catalog XPath XPointer XInclude Iconv ISO8859X Unicode Regexps Automata Schemas Schematron Modules Debug Zlib Lzma
simon@fedora:~/Documents