[tor-bugs] #27268 [Applications/Tor Browser]: preferences cleanup

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#27268: preferences cleanup
-------------------------------------------------+-------------------------
 Reporter:  rzb                                  |          Owner:  tbb-
                                                 |  team
     Type:  defect                               |         Status:
                                                 |  needs_review
 Priority:  Medium                               |      Milestone:
Component:  Applications/Tor Browser             |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:  ff68-esr, TorBrowserTeam201910R,     |  Actual Points:
  GeorgKoppen201910                              |
Parent ID:                                       |         Points:
 Reviewer:                                       |        Sponsor:
-------------------------------------------------+-------------------------
Changes (by gk):

 * status:  new => needs_review
 * keywords:  ff60-esr, TorBrowserTeam201809 => ff68-esr,
     TorBrowserTeam201910R, GeorgKoppen201910


Comment:

 Great work! I'll start with a patch for the first three sections. What
 should we set `intl.charset.fallback.override` to in your opinion?

 For the prefs not in DXR here is a little tip that has helped me a lot in
 the past to track those issues down:

 1) Figure out in which file the prefs were used, ideally files which still
 exist in your git checkout
 2) Do a `git log -p path_to_file`
 3) Search in the git log for the prefs. This should give you the commit
 where they got removed.

 So, https://bugzilla.mozilla.org/show_bug.cgi?id=1254558 is the bug where
 they got removed.

 `bug_27268` (https://gitweb.torproject.org/user/gk/tor-
 browser.git/log/?h=bug_27268) has the first batch of prefs fixups for
 review (two commits). There is a Torbutton patch, too, in `bug_27268`
 (https://gitweb.torproject.org/user/gk/torbutton.git/commit/?h=bug_27268&id=a2eac79bab7c2afa17cd45109a5669cf528215c0):
 Note, I removed `security.pki.sha1_enforcement_level` as well even though
 the pref is still in action. But we set it to a lower value than Mozilla
 ships today which we should not do.

 We should figure out as well whether there is a new hotfix mechanism that
 still needs to get disabled.

 Oh, and I'll adapt the commit message for the preference commit
 accordingly next time I rebase the branch.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/27268#comment:20>
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