Add citar-add-library-file

[bdarcus]

I added a modified, more general, version of this to the wiki. I may add it back to citar; I just wasn't sure if anyone used this ;-)

https://github.com/bdarcus/citar/wiki/Example-functions#add-file-to-library

There's still a little bug in it that I'll fix.

It uses completing-read rather than completing-read-multiple, and works on any file.

Note: recent changes in many of these commands are designed to make them compatible with embark-act-all. I'm not sure the UI on the current version of this command actually is, seems it seems to prompt you to rename the file in one case. Worth testing this.

It also occurs to me that we might want to include an option to add from a DOI, which maybe does that without prompting if the entry has a DOI?

Originally posted by @bdarcus in #522 (reply in thread)

[suyashbire1]

Hi, thank you for this very useful package!

I recently switched to vertico from ivy. I used this feature very frequently with ivy-bibtex so it would be useful to have it in citar as well. Thank you very much!

Also, note that file-name-concat function requires emacs version 28.1. It wasn't working for me in 27.2. Just putting it out there if someone else is facing the same issue.

It also occurs to me that we might want to include an option to add from a DOI, which maybe does that without prompting if the entry has a DOI?

You mean add a pdf? That would be cool!
If you mean add bibtex entry from doi, biblio already has a similar function.

[bdarcus]

You mean add a pdf?

I did mean this.

[bdarcus]

For folks interested in this, care to test #562, which I have not yet done?

If you do, please try it with files with different extensions.

cc @apc