[support] get subdirectories in config

[ghost]

If in src I have content directory which have many subdirectories, how can I check if the files *.md in all subdirectories change?

Something like

content/*/*.md: src/acm-mod.csl, src/static/files/biblio.bib
                         fooo

Thanks

[piranha]

Well, what you wrote here should work. If you want to use ** (recursive match), to descend infinitely in subdirectories, then gostatic doesn't support that right now (it uses Go's built-in filepath.Match, which is pretty basic).

I guess that's something worth improving.