Replace `tt` tags with `code` tags

[Ryan J Ollos <ryan.j.ollos@…>]

If appropriate at this time, I'd like to generate a patch to replace the ​tt tags (not supported in HTML5) with code tags. The CSS used for tt tags should be left in place (for plugins), and also applied to the code tags. A number of unit tests would need to be updated.

This seems like a good change to make for forward compatibility (and helps us clean up some things down the road for bh:#420). However, I'm not very familiar with HTML5, so I ask, are there any compatibility issues with making this change now?

[Ryan J Ollos <ryan.j.ollos@…>]

There are code tags being used in the code-base already, but there is no Trac styling defined for them. For example, the default values in the TracIni tables, such as TracIni#git-section, are wrapped in code tags. Here is an example of how they render:

• <code>false</code> renders as: false
• <tt>false</tt> renders as: false

​7a591648 is a patch to replace all usages of tt tags with code tags, and add styling for code tags. The unit and functional tests pass after these changes, however I'm having trouble getting the dependencies for lxml installed on my system, so I haven't done a test run that exercises the tests with that dependency. I've also encountered the problem in #10722, so I'm not running the SVN tests atm.

Maybe use code tags, not tt tags would even be a recommendation to add to the proposed CSS usage chapter of the ApiDocs (comment:3:ticket:11084)?

[Christian Boos]

Too bad that <tt> is gone, as it's not always about "code".

[Ryan J Ollos]

Changes rebased in rjollos.git:t11094.

[Ryan J Ollos]

Committed to trunk in [11993].

[Ryan J Ollos]

Additional changes in [14167].