Feature request - multi-rune tokens

[kptLucek]

Hey!

Love the lib, been using for a while to generate documents from templates, however...
Where i work, we have alot of documents to process, some of them remember older times and technically it is possible to "update" them to what this package requests, but... it's simply too many of those independent templates, and documents tend to have more than few parameters/tokens.

Is it possible to request a behaviour that start/end delimiters might accept more than one rune?
Formats i've seen so far:

• ${ key }
• ${ key }$
• $$ key $$
• {{ key }}

And so on,

Thanks for any kind of response

[hb1707]

Yes, I also need