I have a set of macros that automate the very repetitive setting of github source urls (basically they expand to Source0: computed-url)

They've been working perfectly so far in rpmbuild -bs and spectool -g

Because I hit a project that managed to put a release at a non-standard place, I want to give myself and other users of the macro the possibility to override this automation. Therefore I added
%{!?SOURCE0 protection around this part (do not define this if SOURCE0 is already defined)

rpmbuild understands it perfectly
spectools stops recognizing any source url :(

(I can't just stop using this macro for this spec, it does a lot of other useful stuff)

I consider this a bug in spectool, please fix it

rpmdevtools-8.10-3.fc27.noarch