Option to return relative paths

[alanocallaghan]

This package is really great. I have a particular usecase that I would be happy to implement a PR for if you think it fits the package.

I would like here() to be able to return paths relative to the cwd where possible.

My use case is that I have rmds files in src/ eg here(src/rmarkdown.Rmd) that are rendered to eg here(outputs/rmarkdown.md) with files in saved in here(outputs/myfiles), eg outputs/myfiles/figure-1.png.

Ideally I would like to set this in knitr, eg knitr::opts_chunk$set(fig.path = here("outputs/rmd_files/exploratory/")). However this means all figure paths are absolute directories, and this totally breaks the md files when moved outside of my PC. If here could return a relative path, I could ensure that the figure path is where I intend it to be while not breaking the links on upload to github etc.

Again, if you think this is a good idea, I'll submit a PR. If not, I'll engineer my own solution.

Cheers, hope I explained this okay.

[krlmlr]

Thanks. Looks like this could be achieved with fs::path_rel(here("...")) ? That function will turn paths into relative paths unconditionally, though.

If we think about optionally returning relative paths, we should implement in the rprojroot package first.

[alanocallaghan]

That looks like it might fit my use case. If so I'll close. Can't check right now but will in a few hours

[alanocallaghan]

Yeah seems like a job for fs more than here itself. Thanks, sorry I'm not familiar with that package.

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