autosectionlabel generates smart-quoted labels only

[wlonk]

Subject: autosectionlabel generates smart-quoted labels only

Problem

• The autosectionlabel extension is very useful, but some of my section labels include apostrophes. When I go to refer to them elsewhere in the text, I have to use smartquotes, despite those not being present in the source. I'd like to be able to refer to my autosectionlabels exactly as they are in the source.

Procedure to reproduce the problem

A sample title that's got an apostrophe
=======================================

This reference will not work: :ref:`A sample title that's got an apostrophe`.

This one will: :ref:`A sample title that’s got an apostrophe`.

I'm planning to put in a PR for this (at least behind a feature-flag), but I don't have the time right now, so this issue is a note-to-self, unless anyone wants to address it before I get a chance.

[jfbu]

This docutils thread might be relevant (related: #3967). With now released Docutils 0.14, the rawsource data is preserved after Docutils smartquotification, which might possibly be relevant to the present issue.

[tk0miya]

Fixed by #4042 and #4591