[tbb-bugs] #22457 [Applications/Tor Browser]: Line wrapping and syntax highlighting do not work in non-e10s-mode on view-source pages

[Tor Bug Tracker & Wiki]

#22457: Line wrapping and syntax highlighting do not work in non-e10s-mode on view-
source pages
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 Reporter:  gk                        |          Owner:  tbb-team
     Type:  defect                    |         Status:  new
 Priority:  Medium                    |      Milestone:
Component:  Applications/Tor Browser  |        Version:
 Severity:  Normal                    |     Resolution:
 Keywords:                            |  Actual Points:
Parent ID:                            |         Points:
 Reviewer:                            |        Sponsor:
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Changes (by gk):

 * cc: yawning, mcs, brade, arthuredelstein (added)


Comment:

 Hm. So, this got introduced with #8725. I have a branch (`bug_22457`
 (https://gitweb.torproject.org/user/gk/torbutton.git/commit/?h=bug_22457&id=cb12ea9247fae28bb10c4ad3fb4e751147adcc76)
 ) that fixes the problem by adding `viewsource.css` to the whitelist.
 However, the CSS file for Linux is significantly different from that for
 Windows/macOS allowing probably detection of Linux/non-Linux platforms.

 While we are not actively protecting against platform detection it seems
 to me we should avoid adding additional means if we can. Thus, I am
 proposing to WONTFIX this issue especially as the vast majority of users
 should be unaffected by this bug due to e10s being enabled by default.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/22457#comment:1>
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