Many software packages have features where non-printing characters such as whitespace, paragraph markers, etc are made visible, for example (from Word and Sublime Text):
Is there any font that shows these characters as visible in a way similar to this?
Obviously a font couldn't have the blue colour of the paragraph symbol or the grey of the dashes - it's visibility of the characters I'm most interested in. I've tried searches on font sites, but no luck (I might be using the wrong terms).
Ideally monospace, but that's not essential. The more non-printing characters that are visible, the better, but just spaces and tabs would be enough.
I would imagine if such a font exists, it's main market would be for proofreading, so people can check the correct spacing and formatting of a book or long document using a printed copy.
My particular reason for wanting such a font is to make errors such as trailing spaces more visible in applications that don't have such a feature.