4 = KEY ====================
8 ==========================
10 If no interest is expressed for a feature that may require a considerable
11 amount of effort to implement, it may get endlessly delayed. Do not be
12 afraid to cast your vote for the next feature to be implemented!
14 Things to do as soon as possible:
16 - Think about allowing explicit order of operations hooks for transforms
17 - Inputs don't do the right thing with submit
18 - Fix "<.<" bug (trailing < is removed if not EOD)
19 - Build in better internal state dumps and debugging tools for remote
21 - Allowed/Allowed* have strange interactions when both set
22 - Transform lone embeds into object tags
27 4.2 release [OMG CONFIG PONIES]
28 ! Fix Printer. It's from the old days when we didn't have decent XML classes
29 ! Factor demo.php into a set of Printer classes, and then create a stub
30 file for users here (inside the actual HTML Purifier library)
31 - Fix error handling with form construction
32 - Do encoding validation in Printers, or at least, where user data comes in
33 - Config: Add examples to everything (make built-in which also automatically
35 - Add "register" field to config schemas to eliminate dependence on
36 naming conventions (try to remember why we ultimately decided on tihs)
39 # Swap out code to use html5lib tokenizer and tree-builder
40 ! Allow turning off of FixNesting and required attribute insertion
42 5.1 release [It's All About Trust] (floating)
43 # Implement untrusted, dangerous elements/attributes
44 # Implement IDREF support (harder than it seems, since you cannot have
45 IDREFs to non-existent IDs)
46 - Implement <area> (client and server side image maps are blocking
48 # Frameset XHTML 1.0 and HTML 4.01 doctypes
49 - Figure out how to simultaneously set %CSS.Trusted and %HTML.Trusted (?)
51 5.2 release [Error'ed]
52 # Error logging for filtering/cleanup procedures
53 # Additional support for poorly written HTML
54 - Microsoft Word HTML cleaning (i.e. MsoNormal, but research essential!)
55 - Friendly strict handling of <address> (block -> <br>)
56 - XSS-attempt detection--certain errors are flagged XSS-like
57 - Append something to duplicate IDs so they're still usable (impl. note: the
58 dupe detector would also need to detect the suffix as well)
60 6.0 release [Beyond HTML]
61 # Legit token based CSS parsing (will require revamping almost every
62 AttrDef class). Probably will use CSSTidy
63 # More control over allowed CSS properties using a modularization
64 # IRI support (this includes IDN)
65 - Standardize token armor for all areas of processing
67 7.0 release [To XML and Beyond]
68 - Extended HTML capabilities based on namespacing and tag transforms (COMPLEX)
69 - Hooks for adding custom processors to custom namespaced tags and
70 attributes, offer default implementation
71 - Lots of documentation and samples
74 - More refactoring to take advantage of PHP5's facilities
75 - Refactor unit tests into lots of test methods
76 - Plugins for major CMSes (COMPLEX)
78 - Also, a FAQ for extension writers with HTML Purifier
82 - Syntax highlighting (with GeSHi) with <pre> and possibly <?php
83 - Look at http://drupal.org/project/Modules/category/63 for ideas
86 ! Support exporting configuration, so users can easily tweak settings
87 in the demo, and then copy-paste into their own setup
88 - Advanced URI filtering schemes (see docs/proposal-new-directives.txt)
89 - Allow scoped="scoped" attribute in <style> tags; may be troublesome
90 because regular CSS has no way of uniquely identifying nodes, so we'd
92 - Explain how to use HTML Purifier in non-PHP languages / create
93 a simple command line stub (or complicated?)
94 - Fixes for Firefox's inability to handle COL alignment props (Bug 915)
95 - Automatically add non-breaking spaces to empty table cells when
96 empty-cells:show is applied to have compatibility with Internet Explorer
97 - Table of Contents generation (XHTML Compiler might be reusable). May also
98 be out-of-band information.
99 - Full set of color keywords. Also, a way to add onto them without
100 finalizing the configuration object.
101 - Write a var_export and memcached DefinitionCache - Denis
102 - Built-in support for target="_blank" on all external links
103 - Convert RTL/LTR override characters to <bdo> tags, or vice versa on demand.
104 Also, enable disabling of directionality
105 ? Externalize inline CSS to promote clean HTML, proposed by Sander Tekelenburg
106 ? Remove redundant tags, ex. <u><u>Underlined</u></u>. Implementation notes:
107 1. Analyzing which tags to remove duplicants
108 2. Ensure attributes are merged into the parent tag
109 3. Extend the tag exclusion system to specify whether or not the
110 contents should be dropped or not (currently, there's code that could do
111 something like this if it didn't drop the inner text too.)
113 Maintenance related (slightly boring)
114 # CHMOD install script for PEAR installs
115 ! Factor out command line parser into its own class, and unit test it
116 - Reduce size of internal data-structures (esp. HTMLDefinition)
117 - Allow merging configurations. Thus,
121 a -> b -> c -> d -> default
122 Maybe allow more fine-grained tuning of this behavior. Alternatively,
123 encourage people to use short plist depths before building them up.
126 ChildDef related (very boring)
127 - Abstract ChildDef_BlockQuote to work with all elements that only
128 allow blocks in them, required or optional
129 - Implement lenient <ruby> child validation
132 - Non-lossy smart alternate character encoding transformations (unless
134 - Pretty-printing HTML: users can use Tidy on the output on entire page
135 - Native content compression, whitespace stripping: use gzip if this is