italic, other styles not displaying on light theme

This bug (or design decision?) has been around long enough that action does need to be taken: if italics etc. are to remain disabled, then the help page should be updated to at least indicate that these formatting options are currently disabled/ineffective.

I think, updating wiki would be the way to go for now. Adding it as a task for google code in.

Currently, it is still not possible to use the formatting mentioned above. Example of the formatting/result provided in the attachment.

It is possible to use the formatting mentioned but the _display_ of that formatted text is not evident until you use the Print View. (i.e. append ?action=print to whichever wiki page URL. e.g. https://help.ubuntu.com/community/HelpOnFormatting?action=print )
So the most appropriate fix would be to the default wiki page theme.

To avoid scope-creep here (https://bugs.launchpad.net/ubuntu-docs/+bug/1057987) I have mailed this additional feedback to <email address hidden> which might be a more appropriate target audience.

Perhaps an administrator of the Ubuntu Community Wiki could review the Themes made available to a wiki user against the various formatting options available at the wiki.

Useful test wiki pages are:
https://help.ubuntu.com/community/HelpOnFormatting
and
https://help.ubuntu.com/community/HelpOnMoinWikiSyntax

The user accessible themes selected at https://help.ubuntu.com/community/HelpOnUserPreferences?action=userprefs&sub=prefs
are:

classic, modern, modernized, modernized_cms, rightsidebar, ubununew, light (the default) and kubuntunew

ubuntunew cannot be applied for some reason

classic, modern, modernized, modernized_cms, rightsidebar and kubuntunew display:
italics, super/sub script and most other formats
(but _not_ underline _nor_ strike-through _nor_ colorized code aka Syntax Highlighting _nor_ smileys)

"light" theme
displays underline, strike-through, SyntaxHighlighting, smileys and most other formats
(but _not_ italics _nor_ super/sub script)

So although "light" it looks like the best compromise it must be possible to fix light (the default) so that all available formatting is correctly displayed.

(I am willing to invest time to figure out this wiki detail.)

Looks like the light theme simply misses CSS definitions for some elements (and Moinmoin-specific classes). Adding them into a CSS file that is included (either an existing one, or a new one) fixes the issue.

I've attached a proof-of-concept Stylish (add-on for Firefox and Chrome, that allows you to add your custom styles for any page) CSS file that should have all the definitions that are missing.

I've added an another attachment that addresses the list issues as well.

One thing the CSS file can't fix is the upper-/lowercase roman numbers and alphabets; this is since CSS is mainly case insensitive, and there is no way to separate <ol type="a"> from <ol type="A">. In the CSS file, the uppercase variants are used.

Indeed, this needs to be taken into production next via - I believe - the Canonical IS and potentially the Canonical web team too. Volunteers?

And here's the new file that actually has those list definitions.