It would be perfect if it were possible to include () in a page title, when it comes do documenting methods/functions.

For example, I have a class with a method called .fooBar(), it would be great for the page title to be ".fooBar()"

When the brackets are at the end of the page tile, I am unable to save or even preview the page - clicking either button takes me back to the edit view.

Should the "()" be in the middle of the title, the following error is given:

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The title you have entered contains invalid characters (:, @, /, \, &, !, |, #, $, *, ;, ~, [, ], (, ),

, <, >).
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I usually create new pages by placing links to them from an existing page, then clicking the link to automatically go to the "add page" screen.

For example, [.fooBar()] <-- I click the resulting link and it goes to the "add page" screen, allows me to choose a template, enter herds of info in to the page and then, only when I come to preview or save, does it thorw a wobbler.

If () are never going to be allowed in a page title (as your error message above suggests) I would at least like to:

a) have a proper error message when trying to save or preview the page so I don't end up there wondering what is going on and eventually starting to question my own sanity (did I just click that button? pheraps I do have the memory retention of a goldfish?)

b) not be allowed to create a new page from a link that has () in it thus alerting me to the fact that () are not valid page title characters 2 hours before finally doing a test with () in the middle of a title and seeing the error message

If you could allow () in a page title, even if only as the last 2 characters, it would be a huge dream IMHO Failing that, see CONF-885 for an alternate solution to the problem