Plesase don't rm the .xml if there are compile errors

[ounsworth]

Problem: the xml2rfc tool reports errors using line numbers relative to the XML doc (not the markdown doc), but the makefile deletes the .xml file, so it's a flaming pain when all it gives you is

Error: Invalid document before running preptool.

and an XML line number.

I suggest a simple fix: if xml2rfc returns a non-zero status code, then don't rm the .xml file.

[martinthomson]

That's non-trivial, because the file is deleted by Make. You can't make retention of the XML file conditional - at least, not to my knowledge. In general, the file is removed because we indicate that we don't need it, which is true.

The real problem here is that xml2rfc is ignoring the line number pragmas coming from the markdown processor. Either that, or those pragmas are not frequent enough to be effective.

In the meantime, you can make whatever.xml to get a copy of the XML that was busted. Annoying perhaps, but it's the best I have.