Hyphens get fontified as minus signs

[jabranham]

In the inferior buffer, R starts up as:

R version 3.5.1 (2018-07-02) -- "Feather Spray"
Copyright (C) 2018 The R Foundation for Statistical Computing
Platform: x86_64-pc-linux-gnu (64-bit)

but all of the hyphens (in the date, platform, and architecture) get font locked as ess-operator-face.

That said, I'm not sure this is something we can/want to tackle.

[lionel-]

I think ideally R would optionally communicate when it's printing R code with some kind of escapes, and we'd only fontify such output.

[vspinu]

I don't think there is a reliable solution so I would say we don't bother with such tiny issues.

[lionel-]

I will keep it as a goal to fix all these issues once and for all.

[jabranham]

I admire your determination, @lionel- 🥇