Absolute path

[ButterSus]

This preprocessor is great, but using a relative path every time you insert a component is very inconvenient.

It would be better to use absolute path from source directory like this:

{{ #template /absolute-path/to-directory/for-some-file.md  }}

If it's hard to implement absolute path, we can just pass directory in book.toml like this:

[preprocessor.template]
absolute-directory = "~/path-to-directory/..."

[sgoudham]

Hi 👋

Thanks for submitting an issue and thank you for the kind words! Unfortunately I haven't really had the motivation to continue working on this as I personally switched away from using mdbook. I'd be super grateful if you would like to submit a PR for this type of behaviour as I definitely agree!

One possible implementation would be to detect any path starting with a / as an absolute path but I'm not exactly a fan given how easily you might just type in a / at the beginning of the path.

Another possible approach, as you've mentioned in the issue, is defining it in the TOML and this also sounds like a valid approach! You could definitely keep those absolute paths in memory and see if those keys pop-up inside the substitutions.

I might get around to updating this at some point in the future but I'd be lying if I said I'll definitely work on it. Sorry!