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
25 4.1 release [OMG CONFIG PONIES]
26 ! Fix Printer. It's from the old days when we didn't have decent XML classes
27 ! Factor demo.php into a set of Printer classes, and then create a stub
28 file for users here (inside the actual HTML Purifier library)
29 - Fix error handling with form construction
30 - Do encoding validation in Printers, or at least, where user data comes in
31 - Config: Add examples to everything (make built-in which also automatically
33 - Add "register" field to config schemas to eliminate dependence on
34 naming conventions (try to remember why we ultimately decided on tihs)
37 # Swap out code to use html5lib tokenizer and tree-builder
38 ! Allow turning off of FixNesting and required attribute insertion
40 5.1 release [It's All About Trust] (floating)
41 # Implement untrusted, dangerous elements/attributes
42 # Implement IDREF support (harder than it seems, since you cannot have
43 IDREFs to non-existent IDs)
44 - Implement <area> (client and server side image maps are blocking
46 # Frameset XHTML 1.0 and HTML 4.01 doctypes
47 - Figure out how to simultaneously set %CSS.Trusted and %HTML.Trusted (?)
49 5.2 release [Error'ed]
50 # Error logging for filtering/cleanup procedures
51 # Additional support for poorly written HTML
52 - Microsoft Word HTML cleaning (i.e. MsoNormal, but research essential!)
53 - Friendly strict handling of <address> (block -> <br>)
54 - XSS-attempt detection--certain errors are flagged XSS-like
55 - Append something to duplicate IDs so they're still usable (impl. note: the
56 dupe detector would also need to detect the suffix as well)
58 6.0 release [Beyond HTML]
59 # Legit token based CSS parsing (will require revamping almost every
60 AttrDef class). Probably will use CSSTidy
61 # More control over allowed CSS properties using a modularization
62 # IRI support (this includes IDN)
63 - Standardize token armor for all areas of processing
65 7.0 release [To XML and Beyond]
66 - Extended HTML capabilities based on namespacing and tag transforms (COMPLEX)
67 - Hooks for adding custom processors to custom namespaced tags and
68 attributes, offer default implementation
69 - Lots of documentation and samples
72 - More refactoring to take advantage of PHP5's facilities
73 - Refactor unit tests into lots of test methods
74 - Plugins for major CMSes (COMPLEX)
76 - Also, a FAQ for extension writers with HTML Purifier
80 - Syntax highlighting (with GeSHi) with <pre> and possibly <?php
81 - Look at http://drupal.org/project/Modules/category/63 for ideas
84 ! Support exporting configuration, so users can easily tweak settings
85 in the demo, and then copy-paste into their own setup
86 - Advanced URI filtering schemes (see docs/proposal-new-directives.txt)
87 - Allow scoped="scoped" attribute in <style> tags; may be troublesome
88 because regular CSS has no way of uniquely identifying nodes, so we'd
90 - Explain how to use HTML Purifier in non-PHP languages / create
91 a simple command line stub (or complicated?)
92 - Fixes for Firefox's inability to handle COL alignment props (Bug 915)
93 - Automatically add non-breaking spaces to empty table cells when
94 empty-cells:show is applied to have compatibility with Internet Explorer
95 - Table of Contents generation (XHTML Compiler might be reusable). May also
96 be out-of-band information.
97 - Full set of color keywords. Also, a way to add onto them without
98 finalizing the configuration object.
99 - Write a var_export and memcached DefinitionCache - Denis
100 - Built-in support for target="_blank" on all external links
101 - Convert RTL/LTR override characters to <bdo> tags, or vice versa on demand.
102 Also, enable disabling of directionality
103 ? Externalize inline CSS to promote clean HTML, proposed by Sander Tekelenburg
104 ? Remove redundant tags, ex. <u><u>Underlined</u></u>. Implementation notes:
105 1. Analyzing which tags to remove duplicants
106 2. Ensure attributes are merged into the parent tag
107 3. Extend the tag exclusion system to specify whether or not the
108 contents should be dropped or not (currently, there's code that could do
109 something like this if it didn't drop the inner text too.)
111 Maintenance related (slightly boring)
112 # CHMOD install script for PEAR installs
113 ! Factor out command line parser into its own class, and unit test it
114 - Reduce size of internal data-structures (esp. HTMLDefinition)
115 - Allow merging configurations. Thus,
119 a -> b -> c -> d -> default
120 Maybe allow more fine-grained tuning of this behavior. Alternatively,
121 encourage people to use short plist depths before building them up.
124 ChildDef related (very boring)
125 - Abstract ChildDef_BlockQuote to work with all elements that only
126 allow blocks in them, required or optional
127 - Implement lenient <ruby> child validation
130 - Non-lossy smart alternate character encoding transformations (unless
132 - Pretty-printing HTML: users can use Tidy on the output on entire page
133 - Native content compression, whitespace stripping: use gzip if this is