Request: capture full #p"..." when running sly-inspect

[fosskers]

If the cursor is passed a sexp and sly-inspect is called, it reads backwards, we're shown a brief highlight of the captured text, and that text is warped to the input prompt at the bottom of the screen.

For a cons cell, the entire thing is captured:

'(a . b)

^^^ all of '(a . b) appears in the prompt. However, for pathname literals, the detection cuts off at the left quote, such that for:

#p"/foo/bar/baz.txt"

only "/foo/bar/baz.txt" appears in the prompt. If #p is added back manually into the prompt, then it interprets the pathname properly.