tigefa4u projects Trac

Make it possible to reuse the regexp string for ranges.

Some enhancements and bugfixes for the Ranges class contributed by Tim Hatch.

> ... I went ahead and added a `__str__` method that will return the most compact representation of the range so it could be used in links. It also has a few bugfixes:

* big-to-little ranges would throw an exception, but only if all were big-to-little
* certain overlapping pairs would cause weird internal representations which were nonoptimal
* a and b were not set for empty ranges, causing an !AttributeError on any `__contains__` call

Use the above to provide compact ranges representation for log: hrefs.

Ported [4233] to 0.10-stable (''related to #4128'')

minor cleanup for 0.10-stable: remove unused code

Make the wrapper for PySqlite cursor a bit more robust, and position some disabled ''print'' debug statements. Related to #4128.

Improve the ''Index by Title'' page.

Now, the !TitleIndex macro supports an additional ''group'' format, e.g.
{{{
[[TitleIndex(format=group)]]
}}}
which structures the output according to the common prefixes found in the Wiki page names.

Closes #1461.

Another small template fix related to [Genshi 421]

Propagate `req` as needed from `wiki_to_link` down to `Formatter`

Finish the TracTimeline refactoring:
- the RSS templates are now using `absurls=True` where relevant
- removed the `to_abs_href` helper function; instead, added a new `abs_href(req)` to the !TimelineEvent class. This makes it easier to assign absolute hrefs to timeline events, if needed.

Moved the wiki_to_* calls in the templates for the TracBrowser and TracRevisionLog views