Single blogpost urls are not unique

[abrock]

The permanent urls for 2015-01-25-stick-wochenende.html and 2015-02-22-stick-wochenende.md are both https://raumzeitlabor.de/blog/stick-wochenende/.

At the moment this is the only case as can be verified by
ls app/_posts | sed 's/^[0-9]*-[0-9]*-[0-9]*-//g' | sed 's/\..*//g' | sort | uniq -c | sort -h

Renaming one of thes posts would solve the issue but we have recurring events like GPN, BMI, Mettwoch, LHC, which are likely to raise the issue again.

[elsbrock]

My proposal would be to set a :title-based permalink for all imported blogposts (keep the links intact) and :year/:month/:day/:title.html as default (_config.yml) for all new.

[elsbrock]

This will be handled by the authoring backend in future.