This way they can be cleanly influenced by the plugins instead of having
to modify global state.

This is the more appropriate place for that functionality, because now
it happens inside the default function for the respective pagesearch and
pagelookup events and can be properly handled by plugins.

The regex for the pagename lookup didn't account for `-` and `.` being
valid characters for namespaces, which lead to wrong results in the
quicksearch and pagename lookup. The full search, which already used the
queryParser, showed the correct results.

This fixes #1659

This fixes a bug that during a search limited to `@de` would show pages
form the namespace `devel` as well (in the fullpage results).

Fixes #2285

To allow creating links with manipulated versions of the current search
query an unparser is necessary. However, the current output of ft_queryParser
makes some advanced features hard to detect. Therefore the new
ft_queryUnparser_simple cannot handle negated phrases and `OR` searches.

It should still cover 98% of search queries.

many PHPDocs
some unused variables
some dynamically declared variables declared

* support namespaces with more then one level e.g. @your:namespace
* support ns:<ns> as well

Our index doesn't support phrase searches so we are searching for the
pages that contain all words of the phrase and then search again in the
content of the pages. As plugins can also add additional text to the
index this event allows plugins to do phrase matching in their content.

Removed extraneous whitespace to eliminate errors reported by the
Squiz.WhiteSpace.SuperfluousWhitespace sniff.

This adds a new parameter to ft_backlinks() to ignore permissions which
is needed for invalidating the cache of linking pages with useheading
enabled. This also adds various test cases for ft_backlinks().

This adds a new parameter to ft_backlinks() to ignore permissions which
is needed for invalidating the cache of linking pages with useheading
enabled. This also adds various test cases for ft_backlinks().

We now have two defines for checking for UTF-8 and Unicode property
support in PREG and use them to work around FS#2636 on older systems.

Seems like matching \b on unicode strings is unreliable across different
platforms (Debian). Using Unicode class lookahed/behinds seems to work
though.

Sometimes pages aren't deleted from the index (that should be fixed,
too) and appear in the backlinks although they don't exist anymore.
This change hides them and hidden pages that shouldn't appear at all as
the backlinks view is an automatic listing. Hidden pages had been hidden
before the transition to the metadata index, too.

This changes the cache logic for metadata. It introduces a new mode that
tries to avoid rendering the page again for simple requests but still
updates the metadata when the page has been changed (but not when the
cache timeout has been reached or purge is used). It simply compares the
time of the last rendering with the last modified time of the page.

The old boolean $render parameter has been changed into an int with
three possible values. Compatibility for the old parameter is provided
using a check with is_numeric using the following mapping:
- false is still don't render (0 is the new value for that)
- true is using that new render logic which means that many plugins will
  still work unchanged even if they request a lot of data using
  $render=true (1 is the new value for that providing full compatibility
  in the case 1 has been used instead of true)

The default value for p_get_first_heading is now that new simple cache
logic, the default value for getting metadata is the cache logic which
should be used with care but is the only way to request (rendered)
metadata that can change because of plugin installations or upgrades.

The page lookup by title has been case insensitive before the indexer
rewrite, since then it has been case sensitive, this makes it case
insensitive again.

Before this change all pages of the given namespace have been included
in the result, now the search is restricted to the namespace again as it
was before the new indexer has been implemented.

A page could have possibly hundreds of backlinks, when the cache is
outdated they should not be rererendered at once

This makes it possible to find words that include soft-hyphens. However,
search higlighting will not work and I have no idea how to make it work.

This new event allows plugins to add or modify the metadata that will be
indexed. Collecting this metadata in an event allows plugins to see if
other plugins have already added the metadata they need and leads to
just one single indexer call thus fewer files are read and written.
Plugins could also replace/prevent the metadata indexer call using this
event.

As of VIM 7.3 it is no longer possible to specify the encoding in the
modeline. This gives an error message whenever such a file is opened,
thus this commit removes the enc setting from the modeline.

of another term. Word boundaries are now respected.