LyX ⇒ Automate Diff Creation

[Handy]

I want to automate the creation of a 'diff' document. Version control system is Subversion.
I tried

lyx -x "command-sequence vc-compare 1 2;" main.lyx

which works as expected and shows a new unsaved file in a new Lyx window. I can save and/or build it.

Then I extended this to

lyx -x "command-sequence vc-compare 1 2; buffer-write-as exported.lyx" main.lyx

However, this stores the original file 'main.lyx' in 'exported.lyx'.

How can I store the new 'diff' file in exported.lyx?

[scottkosty]

I don't use Subversion with LyX. Maybe you could give steps to reproduce a similar issue? Maybe using the compare tool to compare an old.lyx file and a new.lyx file? If I could solve that problem, then it might lead you to a solution to yours.