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788 Commits

Author SHA1 Message Date
Bastian Hofmann
8e4cacf0a7 Refactor HTML.Noopener to HTML.TargetNoopener so that it behaves like HTML.TargetNoreferrer and is active by default if a target is set 2017-02-03 16:54:51 -08:00
Bastian Hofmann
c82051c3e1 Add HTML.Noopener to add a noopener rel to every external link 
This has performance benefits https://jakearchibald.com/2016/performance-benefits-of-rel-noopener/ but most importantly also security benefits https://mathiasbynens.github.io/rel-noopener/

Adresses https://github.com/ezyang/htmlpurifier/issues/96
 2017-02-03 16:54:51 -08:00
Edward Z. Yang
5070404376 Handle semicolons in strings in CSS correctly. 
Fixes http://htmlpurifier.org/phorum/read.php?3,7522,8096

Signed-off-by: Edward Z. Yang <ezyang@cs.stanford.edu>
 2016-10-29 00:01:19 -07:00
Edward Z. Yang
59463c5c39 Allow %URI.DefaultScheme to be null. 
Fixes #103.

Signed-off-by: Edward Z. Yang <ezyang@cs.stanford.edu>
 2016-10-27 17:30:44 -07:00
Edward Z. Yang
20b40a5441 Travis support. 
Signed-off-by: Edward Z. Yang <ezyang@cs.stanford.edu>
 2016-10-27 02:00:47 -07:00
Edward Z. Yang
8b28e571fe Handle case when IDNAs are supported. 
Signed-off-by: Edward Z. Yang <ezyang@cs.stanford.edu>
 2016-10-27 02:00:46 -07:00
Edward Z. Yang
3ae21ce511 PHP 7.0 warnings fix: don't pass rvalue by reference. 
Signed-off-by: Edward Z. Yang <ezyang@cs.stanford.edu>
 2016-10-27 02:00:46 -07:00
zema
246fc8946a css properties: min-width, max-width, min-height, max-height 2016-09-05 10:45:58 +03:00
Edward Z. Yang
d1c5d75027 Fix #73 with Attr.ID.HTML5 
Signed-off-by: Edward Z. Yang <ezyang@cs.stanford.edu>
 2016-07-16 05:52:45 -07:00
Bart Butler
3747cb7efb avoid exif_imagetype exception with small files/corrupt data URI 2016-07-16 05:23:17 -07:00
Edward Z. Yang
44baee6a82 Partial border-radius support. 
Signed-off-by: Edward Z. Yang <ezyang@cs.stanford.edu>
 2016-06-30 22:22:13 -04:00
Cameron Ball
1675fc7caf Add %HTML.TargetNoreferrer, which adds rel="noreferrer" when target attribute is set 
Signed-off-by: Edward Z. Yang <ezyang@cs.stanford.edu>
 2016-06-30 21:53:43 -04:00
Wes Cossick
cc35c8eb8c tel protocol support. 2016-06-30 21:19:49 -04:00
Edward Z. Yang
43a9f052fd Fix #57, make flashvars check (and others) case-insensitive. 
Signed-off-by: Edward Z. Yang <ezyang@cs.stanford.edu>
 2016-03-27 15:56:30 -07:00
Edward Z. Yang
b4981c3395 Fix #67, don't use <body> tags in comments for %Core.ConvertDocumentToFragment 
Signed-off-by: Edward Z. Yang <ezyang@cs.stanford.edu>
 2016-03-27 15:19:32 -07:00
Edward Z. Yang
f14076dc3e Fix #49; prevent readdir infinite loop when cache directory not listable. 
Signed-off-by: Edward Z. Yang <ezyang@cs.stanford.edu>
 2016-03-27 14:53:31 -07:00
Edward Z. Yang
91fd55c857 Fix #45, errors when ul/ol allowed without li. 
Signed-off-by: Edward Z. Yang <ezyang@cs.stanford.edu>
 2016-03-26 22:41:54 -07:00
Edward Z. Yang
753c830239 Update to work with Git version of SimpleTest. 
Signed-off-by: Edward Z. Yang <ezyang@cs.stanford.edu>
 2016-03-24 00:08:03 -07:00
Edward Z. Yang
72123e23c9 Update ExtractStyleBlocks tests for modern CSSTidy at https://github.com/Cerdic/CSSTidy 
Signed-off-by: Edward Z. Yang <ezyang@cs.stanford.edu>
 2016-03-23 23:39:38 -07:00
Edward Z. Yang
45161b4fb1 Accept leading digits in hostnames as per RFC 1123. 
Signed-off-by: Edward Z. Yang <ezyang@cs.stanford.edu>
 2016-03-23 22:42:21 -07:00
Synchro
25db9e1dd0 Don't use PHP4-style constructors 2016-03-16 17:09:41 -07:00
Edward Z. Yang
92aabf2b23 Fix #76, linkify includes dots at end of URL. 
Signed-off-by: Edward Z. Yang <ezyang@cs.stanford.edu>
 2016-03-02 02:05:54 -08:00
Edward Z. Yang
aebe1c02a2 Use idn_to_ascii when available. 
Signed-off-by: Edward Z. Yang <ezyang@cs.stanford.edu>
 2016-03-02 01:35:07 -08:00
Edward Z. Yang
913ac6955b CSS.AllowDuplicates for duplicate properties. 
Signed-off-by: Edward Z. Yang <ezyang@cs.stanford.edu>
 2015-12-20 11:53:54 -08:00
Edward Z. Yang
c67e4c2f7e All values, including empty, are valid HTML bools. 
Signed-off-by: Edward Z. Yang <ezyang@cs.stanford.edu>
 2015-02-11 16:36:44 -08:00
Edward Z. Yang
0c3e68dd03 Stop using umask to make definition cache. Fixes #32 
This is not really the right way to solve the ACL problem,
but there isn't really any reason we should be mucking about
with the umask.

Mucked around with the test case to make it pass, but I think
it's probably a bit delicate now.

Signed-off-by: Edward Z. Yang <ezyang@cs.stanford.edu>
 2014-12-08 18:30:54 -08:00
Edward Z. Yang
cd60294ada Fix rgb in border attribute with spaces, fixes #30. 
Signed-off-by: Edward Z. Yang <ezyang@cs.stanford.edu>
 2014-08-31 12:12:38 +01:00
Edward Z. Yang
39d3df1fd7 Add AutoFormat.RemoveEmpty.Predicate, fixes #35. 
Signed-off-by: Edward Z. Yang <ezyang@cs.stanford.edu>
 2014-08-31 12:12:17 +01:00
Edward Z. Yang
b8704535a3 Update test. 
Signed-off-by: Edward Z. Yang <ezyang@cs.stanford.edu>
 2014-08-31 11:10:11 +01:00
Edward Z. Yang
15d1a3003a Don't truncate in DOMLex when seeing closing div 
Signed-off-by: Edward Z. Yang <ezyang@cs.stanford.edu>
 2014-08-31 08:50:33 +01:00
Edward Z. Yang
8cd08620dc Conditionalize hash_hmac tests for 5.0 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2013-11-29 22:27:01 -08:00
Edward Z. Yang
54477c172b Fix infinite loop in Lexer. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2013-10-27 21:41:08 -07:00
Edward Z. Yang
0767bbc12d Rewrite FixNesting implementation to be tree-based. 
This mega-patch rips out the FixNesting implementation and the related
ChildDef components.  The primary algorithmic change is to convert from
use of tokens to tree nodes, which are far more amenable to the style
of processing that FixNesting uses.  Additionally, FixNesting has been
changed to go bottom-up rather than top-down, in order to avoid needing
to implement backtracking.

This patch simplifies a good deal of the relevant logic, since we no
longer need to continually recalculate the nesting structure when
processing things.  However, the conversion to the alternate format
incurs some overhead, so for small inputs these changes are not a win.
One possibility to greatly reduce the constant factors here is to switch
to entirely using libxml's representation, and never serializing tokens;
this would require one to rewrite injectors, however.

The iterative post-order traversal in FixNesting is a bit subtle, but
we have essentially reified the stack and continuations.

We've removed support for %Core.EscapeInvalidChildren.

Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2013-10-20 22:37:01 -07:00
Edward Z. Yang
8f401f769e Use a Zipper to process MakeWellFormed, removing quadratic behavior. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2013-10-13 13:21:02 -07:00
Edward Z. Yang
82bcc62058 Properly handle context variables that are NULL. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2013-10-13 13:21:02 -07:00
Edward Z. Yang
f17490f009 Implementation of a Zipper, for efficient splice. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2013-10-13 01:16:32 -07:00
Edward Z. Yang
a5fc37d8c3 Improve gitignore. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2013-10-13 00:18:11 -07:00
Edward Z. Yang
cf44f399f8 Properly use HMAC for secure munging. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2013-09-13 21:16:50 -07:00
Marcus Bointon
fac747bdbd PSR-2 reformatting PHPDoc corrections 
With minor corrections.

Signed-off-by: Marcus Bointon <marcus@synchromedia.co.uk>
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2013-08-17 22:27:26 -04:00
Edward Z. Yang
53c2907706 New directive %Core.AllowHostnameUnderscore 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2013-07-26 21:33:39 -07:00
Edward Z. Yang
75bd7abcc7 Make list nesting test more sensitive. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2013-06-06 13:08:13 -07:00
Edward Z. Yang
0680832d41 Use info_parent_def to get parent information, since it may not be present in info array. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2013-05-21 17:19:59 -07:00
Edward Z. Yang
6e37ecd1c8 Make URI parsing algorithm more strict. 
Thanks Michael Gusev <mgusev@sugarcrm.com> for contributing this patch.

Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2013-04-16 13:56:43 -07:00
Edward Z. Yang
631021733b Add %Core.DisableExcludes directive 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2013-02-17 15:47:38 -08:00
Edward Z. Yang
c0ad68108a Do checks against iconvAvailable because PHP 5.4 has botched iconv support. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2012-10-27 02:27:57 -07:00
Edward Z. Yang
72db575446 Fix bug with non-lower case color names in HTML. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2012-07-30 10:54:32 -04:00
Edward Z. Yang
f38fca32a9 Don't lower-case components of background. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2012-06-02 11:22:58 -04:00
Edward Z. Yang
6705140082 Fix in AttrTransform_Nofollow 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2012-05-14 23:07:27 -04:00
Edward Z. Yang
2189a9430f Support for safe external scripts via explicit whitelist. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2012-04-27 17:44:49 -04:00
Edward Z. Yang
7291f19347 Fix problem where stacked AttrTransforms clobber each other. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2012-03-16 23:12:16 -04:00
Edward Z. Yang
31dce298ea Actually make URI.DisableResources do something. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2012-03-02 13:25:00 -05:00
Edward Z. Yang
8c9d461a62 Bugfix: _blank not blank. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2012-02-18 11:28:01 -05:00
Edward Z. Yang
70028f83d6 Make all of the tests work on all PHP versions. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2012-01-18 18:57:13 -05:00
Edward Z. Yang
5c5e3fe79f Avoid doing stupidly clever reflection tricks that make old PHP versions sad. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2012-01-18 18:21:36 -05:00
Edward Z. Yang
56a26cab14 Modernize some of the testing facilities. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2012-01-18 18:10:16 -05:00
Edward Z. Yang
1c7fedff5a Tighter CSS selector validation. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2012-01-17 15:36:26 -05:00
Edward Z. Yang
974fe3f25e Optional support for IDNAs with PEAR Net_IDNA2 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2012-01-06 05:28:00 -08:00
Edward Z. Yang
94468f3c24 Remove PEARSax3 lexer. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2012-01-03 20:40:17 +08:00
Edward Z. Yang
e0354fecd9 Make forms work for transitional doctypes. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2011-12-30 22:56:44 +08:00
Edward Z. Yang
d2de8d976a Add test for invalid SafeIframe usage. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2011-12-26 21:52:55 +08:00
Bradley M. Froehle
4164b2eb2b Implement Iframe module, and provide %HTML.SafeIframe and %URI.SafeIframeRegexp for untrusted usage. 
The purpose of this addition is twofold. In trusted mode, iframes are
now unconditionally allowed.

However, many online video providers (YouTube, Vimeo) and other web
applications (Google Maps, Google Calendar, etc) provide embed code in
iframe format, which is useful functionality in untrusted mode.
You can specify iframes as trusted elements with %HTML.SafeIframe;
however, you need to additionally specify a whitelist mechanism such as
%URI.SafeIframeRegexp to say what iframe embeds are OK (by default
everything is rejected).

Note: As iframes are invalid in strict doctypes, you will not be able to
use them there.

We also added an always_load parameter to URIFilters in order to support
the strange nature of the SafeIframe URIFilter (it always needs to be
loaded, due to the inability of accessing the %HTML.SafeIframe directive
to see if it's needed!)  We expect this URIFilter can expand in the future
to offer more complex validation mechanisms.

Signed-off-by: Bradley M. Froehle <brad.froehle@gmail.com>
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2011-12-26 21:50:53 +08:00
Edward Z. Yang
6b643ede02 Implement %HTML.AllowedComments and %HTML.AllowedCommentsRegexp 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2011-12-26 15:34:42 +08:00
Edward Z. Yang
e41af46a8b Fix broken table content model, easily seen in XHTML1.1 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2011-12-26 14:49:26 +08:00
Edward Z. Yang
3570c9985a Properly handle nested sublists by folding into previous list item. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2011-12-26 14:00:34 +08:00
Edward Z. Yang
8d572993b4 Implement %HTML.TargetBlank 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2011-12-26 08:36:00 +08:00
Edward Z. Yang
9b10515fa4 Core.EscapeNonASCIICharacters now always works, even if target is UTF-8. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2011-12-25 23:31:15 +08:00
Edward Z. Yang
d45e11cc6b Add one more test for SPL autoload defaults. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2011-12-25 02:58:51 -05:00
Edward Z. Yang
94c15d1f56 Fix iconv truncation bug. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2011-12-25 02:31:06 -05:00
Edward Z. Yang
820d6e9097 Do not duplicate nofollow attribute in transform. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2011-08-24 09:56:13 -04:00
Edward Z. Yang
bcfbb8338c URI.Munge munges https to http URIs. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2011-04-10 13:09:24 +01:00
Edward Z. Yang
0124605918 Fix CSS URL innerHTML/cssText escaping bug. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2011-03-27 21:24:32 +01:00
Edward Z. Yang
afb007d22f Protect against font family innerHTML/cssText attacks. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2011-03-27 20:35:43 +01:00
Edward Z. Yang
0dd9e4faf4 Fix Internet Explorer innerHTML bug. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2011-03-27 11:50:52 +01:00
Edward Z. Yang
94ed3b1231 Implement CSS.AllowedFonts. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2011-03-24 22:54:39 +00:00
Edward Z. Yang
6a6c0ed5d7 Don't autoclose if no parents support the tag. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2011-03-22 00:26:41 +00:00
Edward Z. Yang
e05b555448 Safety update for nested ul test. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2011-03-21 21:05:23 +00:00
Edward Z. Yang
ee9c70ab7f Fix E_NOTICE from indexing into empty string. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2011-03-17 17:33:11 +00:00
Edward Z. Yang
e76f4b45d0 Dramatically rewrite null host URI handling. 
Basically, browsers don't parse what should be valid URIs correctly, so
we have to go through some backbends to accomodate them.  Specifically,
for browseable URIs, the following URIs have unintended behavior:

    - ///example.com
    - http:/example.com
    - http:///example.com

Furthermore, if the path begins with //, modifying these URLs must
be done with care, as if you remove the host-name component, the
parse tree changes.

I've modified the engine to follow correct URI semantics as much
as possible while outputting browser compatible code, and invalidate
the URI in cases where we can't deal.  There has been a refactoring
of URIScheme so that this important check is always performed,
introducing a new member variable allow_empty_host which is true
on data, file, mailto and news schemes.

This also fixes bypass bugs on URI.Munge.

Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2011-01-25 18:56:46 +00:00
Edward Z. Yang
a32d5b52e1 Fix embedding flash on non-IE browsers and allow more wmode. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2011-01-22 12:28:57 +00:00
Petr Skoda
78c4e62245 Add new Cache.SerializerPermissions option. 2011-01-13 22:57:40 +00:00
Edward Z. Yang
5803c06765 Check that argv is set before operating on it. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2011-01-13 22:42:47 +00:00
Edward Z. Yang
f3d050c517 Fix two bugs with caching of customized raw definitions. 
The first bug is that we will repeatedly write out the result
of a customized raw definition to the filesystem, even when a cache
entry already exists.

The second bug is that caching these definitions doesn't actually
work (the cache entry is written but never used.)  A new API
for retrieving raw definitions permits the user to take advantage
of caching.

Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2010-12-30 23:51:53 +00:00
Edward Z. Yang
cfc4ee1faf Add initial implementation of CSS.Trusted. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2010-11-12 18:45:03 +00:00
Edward Z. Yang
598c5b60c9 Add sanity check against ze1_compatibility_mode. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2010-11-12 16:15:03 +00:00
Edward Z. Yang
c9e7ffc172 Fix incorrect PEARSax3 test assertion. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2010-11-12 16:06:34 +00:00
Edward Z. Yang
4754d407aa Fix removal of id with DirectLex by preserving armor. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2010-10-28 17:25:31 +01:00
Nick Pope
0b9db1f54b Allow non-static autoload methods w/ PHP >= 5.2.11 
HTML Purifier loads itself as the first autoload function by
unregistering all existing functions and re-registering them after
registering itself.

Originally an exception was thrown when a non-static object method was
encountered as the behaviour of spl_autoload_functions() did not return
the object instance, but only the class name.  This was filed on PHP
bugs (#44144).

The bug was fixed for PHP >= 5.2.11 and >= 5.3

Signed-off-by: Nick Pope <nick@nickpope.me.uk>
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2010-10-28 17:25:17 +01:00
Edward Z. Yang
8c80349f9d Implement HTML.Nofollow for external links. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2010-09-28 12:01:57 -04:00
Edward Z. Yang
d848c99b74 Make IE conditional comment matching ungreedy. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2010-09-28 10:22:38 -04:00
Edward Z. Yang
86990a21f1 Rename newline normalization directive to something better. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2010-09-15 02:50:39 -04:00
Tomasz Muras
9573f0933d Make newline normalization optional. 2010-09-14 23:49:28 -04:00
Edward Z. Yang
ec86598446 Add support for file:// URI scheme. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2010-09-09 00:01:26 -04:00
Edward Z. Yang
7c91104532 Implement HTML.FlashAllowFullScreen. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2010-09-08 23:39:20 -04:00
Edward Z. Yang
eac628f490 Add %CSS.ForbiddenProperties directive. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2010-09-04 02:59:03 -04:00
Edward Z. Yang
479d793562 Reword documentation to be clearer, and give warning on common user error. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2010-09-04 01:31:20 -04:00
Edward Z. Yang
c04a441b3e Actually make URI.DisableResources do something. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2010-06-30 05:59:17 -07:00
Edward Z. Yang
1bed8b6d5f Added %Core.RemoveProcessingInstructions. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2010-06-20 18:26:44 -07:00
Edward Z. Yang
33afd7d9e0 Fix improper handling of IE conditional comments. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2010-06-18 06:08:54 -07:00
Edward Z. Yang
00c66fa9cb Fix bug in parsing single attribute with entities. 
Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2010-05-31 19:44:18 -07:00
Edward Z. Yang
d3abcb90e3 Rewrite CSS url() and font-family output logic. 
The new logic is as follows:

* Given a URL to insert into url(), check that it is properly URL
  encoded (in particular, a doublequote and backslash never occurs
  within it) and then place it as url("http://example.com").

* Given a font name, if it is strictly alphanumeric, it is safe to omit
  quotes. Otherwise, wrap in double quotes and replace '"' with '\22 '
  (note trailing space) and '\' with '\5C ' (ditto).

We introduce expandCSSEscape() which is a hack for common parsing
idioms in CSS; this means that CSS escapes are now recognized inside
URLs as well as unquoted font names.

Signed-off-by: Edward Z. Yang <ezyang@mit.edu>
 2010-05-31 18:45:21 -07:00