How to use the notmuch command <modify-labels> to tag emails with tags containing spaces?

[Spacecortez]

I have recently migrated to neomutt from gmail, and have a lot of emails with a nested tag hierarchy.

These tags are things like:

@1-PROJECTS/Buy a car
@1-PROJECTS/Get Neomutt Emails Working
@2-AREAS/Health
@2-AREAS/Holidays and Travel

etc...

I have worked out a lua script that can generate virtual mailboxes for each of these tags dynamically, but when I try to tag my emails with <modify-labels> I'm unable to ADD (or remove) tags that have spaces in them.

Instead it will add a tag for each set of characters delimited by spaces, with the command

:<modify-labels>@2-AREAS/Holidays and Travel

adding the three tags:

@2-AREAS/Holidays
and
Travel

If I use the command

:<modify-labels>"@2-AREAS/Holidays and Travel"

It adds the three tags:

"@2-AREAS/Holidays
and
Travel"

Notmuch's documentations for the tag command says that spaces in tags should be encoded as %20, e.g.

notmuch tag +@2-AREAS/Holidays%20and%20Travel <search-terms>

But neomutt's <modify-labels> command doesn't work when I do this, as it adds a tag that literally contains "%20" where I want spaces.

Is it possible, with neomutt's <modify-labels> command, to add tags with spaces in them?