Moving order of tags via Regex

Question

I have a document with

<relation>
<relationType>USE</relationType>
<termName>a name</termName>
<termId>an ID</termId>
</relation>

The system we use needs

<relation>
<termId>an ID</termId>
<termName>a name</termName>
<relationType>USE</relationType>
</relation>

Is it possible to write a regex to reorder these properties? Many thanks

Answer 1

Trying to manipulate XML using regexes will lead to madness.

Use xmlstarlet instead.

But I can't see how the order should matter. That's what using named key/value pairs does for you. If the document consumer requires them in a particular order it's broken.