Re: [PATCH] Use completing-read-multiple for org-set-tags-command

[Clemens]

Now that I know that completion works for multiple tags with default 
completion I'm unsure if it is worth to proceed with this. I wondered 
how this would go unnoticed for such a long time in org and now I know 
that the failure was on my part. On the other hand switching to 
`completing-read-multiple` would improve the situation for completion 
frameworks which handle it correctly and would also be more idiomatic 
for this use case.