Allow for regex in tag search

[SterlingHooten]

I see from #145 that there's the possibility for tag hierarchy support, but this seems to require explicitly denoting tags as a group prior to executing a query.

What I'd like is to be able to match tags like "emacs" and "emacs_org" with a wildcard. The default org search can do this with {^emacs.*} but it looks like org-ql's syntax only accepts strings for tag searches.

Is there a way to search through tags using regular expressions instead?

[akirak]

@SterlingHooten There is tags-regexp predicate. I think it is exactly what you want.

[SterlingHooten]

Thank you! That's exactly it, don't know how I missed that in the documentation.
I was able to use helm-org-ql-agenda-files with query tags*:^emacs.* to retrieve headings tagged with either "emacs" or "emacs_org". Likewise org-ql-search returned the same results with the sexp version (tags-regexp "^emacs.*").

[alphapapa]

@akirak Thanks for helping with this.

@SterlingHooten Is there anything else to be done on this issue?

[SterlingHooten]

@alphapapa No, you can close it, thanks!