>bitbake patches need to go to the bitbake-devel list. 
>
>I did put this into testing anyway and it triggered errors in several
selftests:
>
>bitbake-selftest:
>https://autobuilder.yoctoproject.org/typhoon/#/builders/87/builds/1792/steps/11/logs/stdio
>
>and oe-selftest:
>https://autobuilder.yoctoproject.org/typhoon/#/builders/87/builds/1792/steps/14/logs/stdio
>
>(these occurred in all the selftest builds but I've just linked to one).

It seems in these tests multiconfig targets can have more than 2 colons. Probably changing "== 2" to ">= 2" should help.
I tried "bitbake-selftest" and with this change and it passed. Unfortunately now I don't have access to machine that could handle all oe-selftest. Could we agree that I will send second patch so it will be tested on autobuider?

Best regards,
Tomasz Dziendzielski