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-
-TODO List
-
-= KEY ====================
-    # Flagship
-    - Regular
-    ? Maybe I'll Do It
-==========================
-
-If no interest is expressed for a feature that may require a considerable
-amount of effort to implement, it may get endlessly delayed. Do not be
-afraid to cast your vote for the next feature to be implemented!
-
-Things to do as soon as possible:
-
- - http://htmlpurifier.org/phorum/read.php?3,5560,6307#msg-6307
- - Think about allowing explicit order of operations hooks for transforms
- - Fix "<.<" bug (trailing < is removed if not EOD)
- - Build in better internal state dumps and debugging tools for remote
-   debugging
- - Allowed/Allowed* have strange interactions when both set
- ? Transform lone embeds into object tags
- - Deprecated config options that emit warnings when you set them (with'
-   a way of muting the warning if you really want to)
- - Make HTML.Trusted work with Output.FlashCompat
- - HTML.Trusted and HTML.SafeObject have funny interaction; general
-   problem is what to do when a module "supersedes" another
-   (see also tables and basic tables.)  This is a little dicier
-   because HTML.SafeObject has some extra functionality that
-   trusted might find useful.  See http://htmlpurifier.org/phorum/read.php?3,5762,6100
-
-FUTURE VERSIONS
----------------
-
-4.9 release [OMG CONFIG PONIES]
- ! Fix Printer. It's from the old days when we didn't have decent XML classes
- ! Factor demo.php into a set of Printer classes, and then create a stub
-   file for users here (inside the actual HTML Purifier library)
- - Fix error handling with form construction
- - Do encoding validation in Printers, or at least, where user data comes in
- - Config: Add examples to everything (make built-in which also automatically
-   gives output)
- - Add "register" field to config schemas to eliminate dependence on
-   naming conventions (try to remember why we ultimately decided on tihs)
-
-5.0 release [HTML 5]
- # Swap out code to use html5lib tokenizer and tree-builder
- ! Allow turning off of FixNesting and required attribute insertion
-
-5.1 release [It's All About Trust] (floating)
- # Implement untrusted, dangerous elements/attributes
- # Implement IDREF support (harder than it seems, since you cannot have
-   IDREFs to non-existent IDs)
-     - Implement <area> (client and server side image maps are blocking
-       on IDREF support)
- # Frameset XHTML 1.0 and HTML 4.01 doctypes
- - Figure out how to simultaneously set %CSS.Trusted and %HTML.Trusted (?)
-
-5.2 release [Error'ed]
- # Error logging for filtering/cleanup procedures
- # Additional support for poorly written HTML
-    - Microsoft Word HTML cleaning (i.e. MsoNormal, but research essential!)
-    - Friendly strict handling of <address> (block -> <br>)
- - XSS-attempt detection--certain errors are flagged XSS-like
- - Append something to duplicate IDs so they're still usable (impl. note: the
-   dupe detector would also need to detect the suffix as well)
-
-6.0 release [Beyond HTML]
- # Legit token based CSS parsing (will require revamping almost every
-   AttrDef class). Probably will use CSSTidy
- # More control over allowed CSS properties using a modularization
- # IRI support (this includes IDN)
- - Standardize token armor for all areas of processing
-
-7.0 release [To XML and Beyond]
- - Extended HTML capabilities based on namespacing and tag transforms (COMPLEX)
-    - Hooks for adding custom processors to custom namespaced tags and
-      attributes, offer default implementation
-    - Lots of documentation and samples
-
-Ongoing
- - More refactoring to take advantage of PHP5's facilities
- - Refactor unit tests into lots of test methods
- - Plugins for major CMSes (COMPLEX)
-    - phpBB
-    - Also, a FAQ for extension writers with HTML Purifier
-
-AutoFormat
- - Smileys
- - Syntax highlighting (with GeSHi) with <pre> and possibly <?php
- - Look at http://drupal.org/project/Modules/category/63 for ideas
-
-Neat feature related
- ! Support exporting configuration, so users can easily tweak settings
-   in the demo, and then copy-paste into their own setup
- - Advanced URI filtering schemes (see docs/proposal-new-directives.txt)
- - Allow scoped="scoped" attribute in <style> tags; may be troublesome
-   because regular CSS has no way of uniquely identifying nodes, so we'd
-   have to generate IDs
- - Explain how to use HTML Purifier in non-PHP languages / create
-   a simple command line stub (or complicated?)
- - Fixes for Firefox's inability to handle COL alignment props (Bug 915)
- - Automatically add non-breaking spaces to empty table cells when
-   empty-cells:show is applied to have compatibility with Internet Explorer
- - Table of Contents generation (XHTML Compiler might be reusable). May also
-   be out-of-band information.
- - Full set of color keywords. Also, a way to add onto them without
-   finalizing the configuration object.
- - Write a var_export and memcached DefinitionCache - Denis
- - Built-in support for target="_blank" on all external links
- - Convert RTL/LTR override characters to <bdo> tags, or vice versa on demand.
-   Also, enable disabling of directionality
- ? Externalize inline CSS to promote clean HTML, proposed by Sander Tekelenburg
- ? Remove redundant tags, ex. <u><u>Underlined</u></u>. Implementation notes:
-    1. Analyzing which tags to remove duplicants
-    2. Ensure attributes are merged into the parent tag
-    3. Extend the tag exclusion system to specify whether or not the
-    contents should be dropped or not (currently, there's code that could do
-    something like this if it didn't drop the inner text too.)
- ? Make AutoParagraph also support paragraph-izing double <br> tags, and not
-   just double newlines.  This is kind of tough to do in the current framework,
-   though, and might be reasonably approximated by search replacing double <br>s
-   with newlines before running it through HTML Purifier.
-
-Maintenance related (slightly boring)
- # CHMOD install script for PEAR installs
- ! Factor out command line parser into its own class, and unit test it
- - Reduce size of internal data-structures (esp. HTMLDefinition)
- - Allow merging configurations.  Thus,
-        a -> b -> default
-        c -> d -> default
-   becomes
-        a -> b -> c -> d -> default
-   Maybe allow more fine-grained tuning of this behavior. Alternatively,
-   encourage people to use short plist depths before building them up.
- - Time PHPT tests
-
-ChildDef related (very boring)
- - Abstract ChildDef_BlockQuote to work with all elements that only
-   allow blocks in them, required or optional
- - Implement lenient <ruby> child validation
-
-Wontfix
- - Non-lossy smart alternate character encoding transformations (unless
-   patch provided)
- - Pretty-printing HTML: users can use Tidy on the output on entire page
- - Native content compression, whitespace stripping: use gzip if this is
-   really important
-
-    vim: et sw=4 sts=4