Commit graph

329 commits

Author SHA1 Message Date
Subramanya Sastry 37206e2a12 Save data-attribs in DOMs of nested refs
* 4ea8dbd8 exposed a bug handling of nested <refs> (done via
  templates). It caused crashers in rt-testing of a few pages.
  Ex: enwiki/António de Oliveira Salazar?oldid=676623209

* Reproducible with the following wikitext:
-------------------------------------
x <ref>y {{sfn|Kay|1970|pp=123}}</ref>
<references />
-------------------------------------

* This patch fixes the problem by making sure data-mw and
  data-parsoid of the DOM for the nested ref are saved before
  serialization to a string.

* Removed the saveHandler from dom.t.unpackDOMFragments.js and
  reused the simpler dom-walk code added as part of this patch.

* Also updated comments in ext.Cite.js

* Hard to introduce nested <ref> in parser tests, so no
  new tests for this scenario.

Change-Id: I2298bbe87ccddd87f307d206d77d78fcfb0d8a75
2015-08-18 13:43:50 -05:00
Arlo Breault 7b901bc99b [jscs] Enforce requireTrailingComma
Change-Id: Ib8dde69fec221b970c80483b25c370c3c7067105
2015-07-28 14:58:33 -07:00
Arlo Breault 3f8115937a [jscs] Enforce disallowSpacesInsideParentheses
* Change generated with `jscs -x .`

 * Well, except in the tokenizer.

Change-Id: Ia516d0d150255c764e5c023274741c520cc9dce7
2015-07-23 12:06:38 -07:00
Marc Ordinas i Llopis 7661d25fdb Use CSS to style Cite references
Output a default style of reference numbers and text for <ref>s and
<references>, use CSS content generation in supported browsers to render
per-language style.

Right now it provides pixel-perfect renditions of refs in enwiki and
eswiki, and initial support for fawiki (which can't be tested with current
phantomjs). The CSS is loaded from the new module 'ext.cite.style',
implemented in the Cite.php extension.

Further changes to Cite.php will be necessary to change it to use this
same CSS instead of system messages.

Test results (and two blacklisted results) changed due to new HTML
structure.

Related to bugs T51538, T45235 and T73803.

Bug: T86782
Change-Id: I21fbbd3247bf7801e5ef9bd5312f95777f4dd6ef
2015-06-29 15:59:32 -05:00
Arlo Breault c74d64c2d7 Provide section-offsets for immediate children of <body>
* Changes xmlserializer.serializeToString and DU.serializeNode to return
   an object with the str and, if options.captureOffsets, the html offsets
   of top-level nodes.

 * Added mocha tests to capture expectations about offsets computation.

Bug: T96279
Change-Id: Id74988d3ef39078fbfea72359884b75290da041b
2015-05-14 11:50:16 -05:00
C. Scott Ananian 4ca968a95c Remove vestigial reset() methods in Cite.
Cite is now stateless and should remain so!

Change-Id: Ib90cb1da8cb809f6fec9410ff6fb00c32e276dcf
2015-04-30 16:34:34 -04:00
Arlo Breault 4c4f5ce368 [jscs] Enforce disallowMultipleVarDecl
* Continues on 3311936a5e15c2080d8040dd605e58fa33407e60 and
   05a8947fef30e6fc4519b822b0931d965d57efa8

 * With some whitespace cleanup.

Change-Id: I32109c6fd35439914df4df06432376d6a968268b
2015-04-22 11:18:38 -07:00
Arlo Breault 61053dbcc7 [jscs] Enforce requireSpaceAfterBinaryOperators
* This was auto-corrected with jscs -x .

Change-Id: Idee8a562ae2c29cc5c661532b016220be3c107aa
2015-04-08 00:07:38 -07:00
Arlo Breault 4c9ad094d9 [jscs] Enforce disallowSpacesInFunction
* This was auto-corrected with jscs -x .

Change-Id: I7110a2eb946ae91ded268d73320a9e8194ca2ab1
2015-04-07 23:54:59 -07:00
Arlo Breault 49b3a70b39 [jscs] Enforce requireSpaceBeforeBinaryOperators
* This was auto-corrected with jscs -x .

Change-Id: I13df3896e8130743eb31581e80d4c7909e48768d
2015-04-07 23:28:41 -07:00
Marc Ordinas i Llopis e060ef8fe3 T93973: Remove state from Cite extension
Keep all state in the DOM post-processor in dom.processRefs.js, so
that there's no need to reset the extension and it can be safely
used for multiple documents

Change-Id: Iacf7e3003929f74b76774d3e765c792991700e51
2015-04-01 11:22:33 +02:00
Subramanya Sastry 9e29edb03f Bug fix in processRefs DOM pass refactoring
Change-Id: Icd4ce9919de4ba50e5186b8ec3b1923ae9eeb18e
2015-03-26 11:48:09 -05:00
Subramanya Sastry 4040f5d160 Code restructuring of processRefs DOM pass.
* This lets us do reset state in the right place where it belongs.

Change-Id: I542d521733c6c1fb6d93f269604e256df7f6492d
2015-03-25 17:45:15 -05:00
Marc Ordinas i Llopis c1b71a69ab T63165: Ensure reference index is reset at the end of document
Once all the missing references have been added, ensure that the
the reference index is reset to 0.

Also related to T93715.

Change-Id: I00a2b2da9116602d2eb00e782d4832cf580e4b59
2015-03-25 11:06:38 -07:00
Marc Ordinas i Llopis dbb4e4b028 T88290: Keep separate content for multiple <ref>s with same name
Change-Id: Iae4dcdb405ce8d233af3105e19bab2b32938ed96
2015-02-27 11:40:04 -08:00
Marc Ordinas i Llopis 5a0abc13b9 T88290: Only output <ref> contents in <references>
Instead of outputting a <ref>'s HTML in both data-mw and in
<references>, output it only in the later and point to it from
data-mw.body.id.

Also preserve data-parsoid for <ref>s text in <references>, as now
that's the only representation of it.

To correctly do html2wt when there are <ref>s inside <references>
we need access to the main document DOM when serializing, so also
ensure that env.page.dom is correctly set (it was only set in v2
before).

Updated tests results and blacklist (some tests now pass).

Change-Id: I0fa7ad692585af19136909bfec39db9868b137c5
2015-02-27 03:14:53 -08:00
Subramanya Sastry 6e6d3481b6 T90309: Ensure that implicitly-added <references> output have unique ids
* Fixed parser test output of one test to add unique ids. Output for
  other parser tests modified in f528f508 still need fixing up.
  Left for a separate patch.

Change-Id: I04546c2a590930121d960239a1954b26771e9c80
2015-02-20 19:02:45 -06:00
Subramanya Sastry e3bf708b77 Fix output for implicit references for improved html2wt output
* <references /> was not appearing on its own line and was
  instead getting tacked onto previous line of wikitext output.
* Change in blacklisted wt2wt test shows that the new output
  is better.

Change-Id: Ie82401a3bc6082b733339e2456810b6b1c87529a
2015-02-17 17:51:07 +00:00
Marc Ordinas i Llopis f528f508e8 T88660: Emit reflists for <ref> with no explicit <references>
This patch emits a reflist for all ref groups that still have
<ref>s in them at the end of the document. Currently Cite.php only
does so for the default group. See also T88290.

On html2wt the missing <references> are added to the wikitext,
which makes the wikitext correct. Selser catches this if not part
of the edit.

Change tests to include an explicit <references /> tag, and add
one for explcitly testing that they do get added. This last one
has to be blacklisted as the new <references /> don't appear with
selser.

Change-Id: I79af2c34481cadbf0d68d9571928979adf559b58
2015-02-16 03:16:18 -08:00
Marc Ordinas i Llopis cd8e50acb2 [Cite] Generate the same ids for <ref>s and notes as Cite.php
One particular case is that Cite.php considers equal a name and
its encoding, i.e. "a & b" === "a &amp; b". Added a new test for
this case, but blacklisted it on html2wt, wt2wt and html2html due
to a different problem with how Parsoid encodes entities. This
will be investigated separately, as a simple fix could break
unrelated cases.

Also updated tests and blacklist to the new ids.

Change-Id: I87637a1dc812a3a8f29327b9e6c0040b22a651c4
2015-01-07 11:27:07 +01:00
Marc Ordinas i Llopis 3c82fb7787 T58916: Parse extension parameters as plain text
Also encode cite ids properly as now they can contain arbitrary
text. Change in blacklist due to this.

TODO: Investigate if it would be better to do this directly in
the tokenizer.

Change-Id: Ic112124e90d256d73a351d0d57fe3c7546fa065f
2014-12-22 14:02:05 +00:00
Arlo Breault 9e6055d547 Fix failures from v2 endpoint
* Although this resolves the crashes, I'm unsatisfied with it as a
   proper fix to the underlying issue. There are many places throughout
   the codebase where we serialize and then parse document fragments
   that should be instrumented to store and unpack data-* attributes.

Bug: T76518
Change-Id: Idca1b0a37ec924a71cb51160d000c7de9717d422
2014-12-02 16:47:32 -08:00
Subramanya Sastry 8694562ee8 (Bug 57252) Generate HTML5-compliant cite id/about attr values
* Currently, this mimics Cite.php behavior where "a b" and "a_b"
  are considered identical ids.

* Added new parser test.
* Fixed output of another test.
* Fixed section name of a commented out test.

Change-Id: I0c51404c3e659bbddfe9a8909aa6a109d368b762
2014-10-24 17:59:17 -05:00
Arlo Breault 90c5303678 (Bug 53109) Move data-mw away from manual json attr loading
* This is both faster and consistent with how we're accessing other
   parsoid attributes. It's also a step towards not having this data in
   the html output.

 * Changes to parserTests and the blacklist are for attribute order.

 * Requires upgrading domino to 1.0.18
   https://github.com/fgnass/domino/pull/48

Change-Id: I1edbc260887d480adf04763b15043c374e27cceb
2014-09-27 08:53:22 -07:00
Subramanya Sastry 6c503e8973 (Bug 64901) Fix paragraph-wrapping to match PHP parser + Tidy combo
General changes
---------------
* Replaced the hacky 'inBlockNode' parser pipeline option with
  a cleaner 'noPWrapping' option that suppresses paragraph wrapping
  in sub-pipelines (ex: recursive link content, ref tags, attribute
  content, etc.).

Changes to wt2html pipeline
---------------------------
* Fixed paragraph-wrapping code to ensure that there are no bare
  text nodes left behind, but without removing the line-based block-tag
  influences on p-wrapping. Some simplifications as well.

  TODO: There are still some discrepancies around <blockquote>
  p-wrapping behavior. These will be investigated and addressed
  in a future patch.

* Fixed foster parenting code to ensure that fostered content is
  added in p-tags where necessary rather than span-tags.

Changes to html2wt/selser pipeline
----------------------------------
* Fixed DOMDiff to tag mw:DiffMarker nodes with a is-block-node
  attribute when the deleted node is a block node. This is used
  during selective serialization to discard original separators
  between adjacent p-nodes if either of their neighbors is a
  deleted block node.

* Fixed serialization to account for changes to p-wrapping.
  - Updated tag handlers for the <p> tag.
  - Updated separator handling to deal with deleted block tags
    and their influence on separators around adjacent p-tags.
  - Updated selser output code to test whether a deleted block
    tag forces nowiki escaping on unedited content from adjacent
    p-tags.

Changes to parser tests / test setup
------------------------------------
* Tweaked selser test generation to ensure that text nodes are always
  inserted in p-wrappers where necessary.

* Updated parser test output for several tests to introduce p-tags
  instead of span-tags or missing p-tags, add html/parsoid section,
  or in one case, add missing HTML output.

Parser Test Result changes
--------------------------
Newly passing
- 12 wt2html
- 1 wt2wt
- 3 html2html
- 3 html2wt

Newly failing
- 1 html2wt

  "3. Leading whitespace in indent-pre suppressing contexts should not be escaped"
  This is just normalization of output where multiple HTML forms
  serialize to the same wikitext with a newline difference. It is not
  worth the complexity to fix this.

- 1 wt2wt
  ""Trailing newlines in a deep dom-subtree that ends a wikitext line"
  This is again normalization during serialization where an extra
  unnecessary newline is introduced.

- A bunch of selser test changes.
  182 +add, 188 -add => 6 fewer selser failures

  - That is a lot of changes to sift through, and I didn't look at every
    one of those, but a number of changes seem to be harmless, and just
    a change to previously "failing" tests.

  - "Media link with nasty text" test seems to have a lot of selser
    changes, but the HTML generated by Parsoid seems to be "buggy" with
    interesting DSR values as well. That needs investigation separately.

  - "HTML nested bullet list, closed tags (bug 5497) [[3,3,4,[0,1,4],3]]"
    has seen a degradation where a dirty diff got introduced.
    Haven't investigated carefully why that is so.

Change-Id: Ia9c9950717120fbcd03abfe4e09168e787669ac4
2014-09-16 11:59:55 -05:00
Subramanya Sastry f5e7f667d5 (Bug 69827): Supported nested <ref> tags once more
* Nested <ref> tag support was broken in 69b6ec4d since that patch
  effectively processed <refs> only on the final DOM rather than
  extracted <ref> information in sub-pipelines. In doing so, it
  broke support for <ref> in <ref> tags which are supported by {{efn}}
  templates and used as follows.

  {{efn|A clarification.{{sfn|Smith|2009|p=2}}}}

  The {{sfn}} tpl generates a <ref> tag inside another <ref> tag
  generated by the {{efn}} tpl.

* This patch fixes the breakage by processing <ref> content after it
  is extracted (in case it is known to have nested <ref> tags).

* This fixes the rendering on enwiki/Otto_I%2C_Holy_Roman_Emperor
  and is an improvement over when it was broken. The nested <ref>
  gets id 18 (just like the Cite.php handling) whereas it used to
  get id 1 before the breakage.

* TODO:
  - Figure out a way to add a test for this.

Change-Id: Ib82b75f66249b2133a123adbe6fd7acbfd8ec8fb
2014-08-22 13:04:50 -05:00
Subramanya Sastry 69b6ec4d4d (Bug 67237): Fix citation numbering issue
* Process <ref> and <references> tag on the top-level DOM only
  and ignore the generateRefs pass when processing other content.

* This required a few fixes:
  - ensure that DOMPostProcessor knows about the top-level.
  - ensure that DOMVisitor knows about the top-level.
  - cleanup pass leaves behind the ref-marker metas from DOMs from
    non top-level content.
  - process nested references content.

* One of the references tests had incorrect parsed output. That test
  has been updated to reflect the correct output from this patch.

* Barack Obama seems to now have the correct numbering on references.

Change-Id: I5465721d2fc715f2168f267e773a446bc37d198b
2014-07-01 22:48:13 -05:00
Subramanya Sastry e59aaecbcf Use TokenStreamPatcher to convert table tags outside wikitables to text
* Keep track of table nesting in token stream patcher and use it to
  convert <td>, <tr>, and <th> tags to plain strings.

* This fix is only enabled on the top-level token stream.
  To support this, fixed the resetState function in the parser
  construction code to pass in a toplevel flag which lets the
  token stream patcher know the context it is in.

* Fixes 29 (wt2html,wt2wt,html2html,selser) tests and improves
  results of 1 previously blacklisted tests. The failing selser
  test is actually a false failure because selser is more accurate
  than non-selser wts.

* Consolidated a few separate tests into a single test that covers
  all this functionality.
  - This new test fails wt2wt and html2wt modes because serializer
    uses tokenizer information which continues to return table tokens
    and results in <nowiki> wrappers.

Bug: 66489
Bug: 66498
Change-Id: I9f42354ea9efb0f8adfc96c23760012220d00dd4
2014-06-24 12:33:55 -05:00
Gabriel Wicke 7db2d118dc Work around Cite reset issue
The Cite extension does not currently handle resetState calls in
sub-pipelines, and relies on sharing a single Cite instance between all
pipelines. Fixing this is a longer project, so this patch works around the
issue for now by passing a flag indicating resetState calls in sub-pipelines
and ignoring the call in Cite in that case.

Change-Id: If3d426a5311a55d1c1530860d2b665d3681f1aa9
2014-04-30 10:02:39 -07:00
Arlo Breault 8ed953ee0f Temp fix for handling non-string ref attribute vals
* Entities in ref name weren't expected

 * Fixes the crash from arwiki:تأثير_الدمعة_السوداء

 * Makes use of the fix from de3642b8dd4a804ac654f2943a900496f2c8b3f3

Bug: 63790
Change-Id: Icb8781b4d9decc5a8b115d0b11def4d18f5d5025
2014-04-15 14:27:12 -07:00
Arlo Breault a28fbbbac7 Only pass document.body to the post-processors
* With some other cleanup pulled out of the external ids patch.

Change-Id: I8cee994079579d922da97a4c1c793540bfd8d1b1
2014-04-03 16:05:36 -07:00
Subramanya Sastry d99166010c Minor code cleanup: Use forEach instead of map where appropriate
* Also replaced buf with newTokens in ext.core.TemplateHandler.js

Change-Id: I81e05a13c9373aa298d710b7942f9fe3cd802e63
2014-03-26 16:48:18 -05:00
Subramanya Sastry e8351a4f07 Cite: Parse <references> content all the way to DOM.
* Thus far, <references> tag content was being parsed to
  stage 2 and merged into main pipeline. This patch takes
  this all the way to DOM. This required some tweaks to
  handling of <ref>s nested inside <references>.

* Fixed up a buggy parser test in the bargain -- the old parsoid
  result was buggy as well. I verified output in the enwp
  sandbox.

Change-Id: Iff6c528066b71ce1b00dd769910a04ee66623340
2014-03-11 10:06:53 -05:00
Marc Ordinas i Llopis 99b75249f1 <references> handler should respect inTemplate pipeline option
Change-Id: Ibfc1ea97aef8681bfd3cf04dba0aa32824c076f0
2014-03-07 18:39:28 +01:00
Subramanya Sastry 5445cfcd92 DSR computation: Handle <ref> tags nested in <references>
* The current fix is a hack to fix dsr issues right away.
  Meanwhile, will invesitigate a fix that will involve processing
  <references> in its own subpipeline and persisting state into
  the top-level page.

* Fixes a known selser failure from bug 62025.

Change-Id: I0f80d68e927f500939a44af401cc73c07e24721f
2014-02-28 15:56:19 -06:00
Subramanya Sastry 742b5d4453 Renamed function name & reorder args for clarity + added docs.
* Renamed buildDOMFragmentForTokenStream --> buildDOMFragmentTokens
  and made env. the first arg.

* Added documentation to buildDOMFragmentTokens and encapsulateHTML

Change-Id: I7eccfd3f4dc5b4b91d20d1d24d98ec514df6dfbc
2014-02-21 14:37:10 -06:00
Subramanya Sastry 7a949a4eb5 Code cleanup: Pipeline utilities now take env and parent frame.
* Removed manager and passed in env and parent-frame to all
  utilities that process content in new pipelines.

* Added more documentation to mediawiki.Util.js.

* Renamed processAttributeToDOM to a more appropriate name.

* Added pipelineFactory property to env and used that to
  construct parsing pipelines everywhere.

Change-Id: Ic612e5630d19d4e3f5d6388bc5cd117d337fd799
2014-02-12 01:21:15 +00:00
Arlo Breault a0cbd6e4de Remove token caching and cloning
Bug: 51203
Change-Id: Ia377d5878ac048bab15dbd42187330bee653c6eb
2014-02-11 00:47:58 +00:00
Subramanya Sastry 34c33103bf Use Map.delete(..) to remove an entry from a map.
* Fixes crasher on frwiki:Mundos_opuestos_2 with oldid 99313179

Change-Id: Ide5a9594ebc7622bb7ff5fc3d6eac09a0f0e1642
2014-02-03 20:10:54 +00:00
Subramanya Sastry fc7985f5ca Added a flag to DOM-fragment unpacking to update fragment DSR
* This patch adds a flag to DOM fragment unpacking to update
  fragment DSR in cases where the fragment needs it (references
  block + reused template/extension/images content). In other
  cases of dom-fragment use, the DSR should not be updated.

  Ex: All cases where fragments are used to implement parsing
  scopes (all A-tag content currently) since DSR computation
  is set up with offsets in the top-level source.

  This is not just an optimization, but a correctness issue
  since the fragment unwrapper always sets the fragment DSR
  on the first node which would be incorrect in scenarios where
  the fragment DOM has multiple top-level nodes.

* Parser test runs now have better DSR values in certain cases.

Change-Id: If1f5bf98dab246a3c8a1869b38335e90268cb5c5
2014-01-30 18:19:10 -06:00
Gabriel Wicke 32a1718133 A few small performance tweaks
* Use string concatenation instead of Array.push & join for accumulators:
  http://stackoverflow.com/questions/7299010/why-is-string-concatenation-faster-than-array-join

Overall parser tests might be slightly faster, but the improvement seems to be
within the margin of error.

Change-Id: I5d9e4191a79253fa808c9b0a26052470e8613a79
2014-01-30 11:14:55 -08:00
C. Scott Ananian 301b9541b5 Uniformly use Array.isArray to test whether an object is an array.
This reads better than manually testing the constructor, and often
leads to terser code since we don't have to check whether the argument
is an non-null object before querying the constructor field.

Change-Id: I53ec87d6e80d658aa3d26dc2b613dc6c58e2d026
2014-01-27 17:28:11 -05:00
C. Scott Ananian b4fd3bef6f Use es6 methods instead of fakejquery.
In particular, use `Array.isArray` instead of `$.isArray`, and
`Object.assign` instead of `$.extend`.  `Object.assign` operates only on own
properties, so use `Object.create` on the prototype where necessary to
get inherited properties.  `Object.assign` does a simple assignment and
is appropriate in most places, but be careful if we ever install
getters/setters on a prototype.

Implement `Util.clone()` from scratch to have a jquery-compatible deep
clone operation.  In particular, this needs to ignore objects which
aren't "plain objects", so we don't try to clone DOM nodes.  Our
definition of a "plain object" is compatible with jquery/zepto.js, and
is thus something of a hack.  We should eventually replace this with a
`console.assert()` and remove/rewrite the places where we try to clone
objects which contain DOM trees and other cruft.

Change-Id: I88c8fe41a9be84c167d5a0ea1187fd258f077968
2014-01-27 17:21:28 -05:00
Arlo Breault eced96cc2c Move .data off DOM nodes
* For now it stores in .dataobject, freeing up .data to
   handle <object> elements.

 * Adds a test that crashes master.

Bug: 57394
Change-Id: I4207d76ad9dab660e890008b2ee5014554ce52c8
2014-01-15 16:59:18 -06:00
Arlo Breault d2ba2d73e7 Properly bump reference anchors
* Adds an index of all the references on a page in order to avoid
   repeating attrs when multiple <references /> tags are present.

 * Update tests to reflect the new behaviour.

Bug: 59782
Change-Id: Ia44bf59a9304788aca170041d3b85f53557151fc
2014-01-13 12:09:54 -05:00
Arlo Breault a372d97939 Use maps where wanting
Comments seemed to indicate so.

Change-Id: I63d0524d134d8be166403cfa9d6400cecc1749ed
2014-01-09 22:33:57 -05:00
Gabriel Wicke 4cfad3a771 Clean up repo for Parsoid service only
* remove non-JS code (PHP, cpp, misc)
* move js code to the root dir

Change-Id: Ibdf1c0ea46f128adc91238b145c46382c6f4d550
2013-12-13 14:53:24 -08:00
Subramanya Sastry aa2780a554 Minor: Cleanup and comment update.
Change-Id: I502f838f55a0a7c046b9d5969a8e5fb6af0dbc10
2013-10-23 20:57:17 -05:00
Gabriel Wicke 914bf97575 Sanitize void tags and drop attributes for end tags
- Make sure void element attributes are sanitized

- Drop attributes on end tags

- Fix Cite to use data-parsoid instead of invalid attributes to pass
  information from the token stream to the DOM

Change-Id: If236d4c9197b12ff86a607763f25ed7677623bc4
2013-10-18 10:21:37 -07:00
Subramanya Sastry baccddcf7c Bug fixes in aboutId assignment during DOM Fragment unpacking
* isForeignContent now flags content that is not originally
  present in the top-level page => transclusion and extension
  content. During DOM fragment unpacking, top-level children
  of the fragment are always re-assigned the fragment wrapper's
  about-id.

* For content that is not flagged isForeignContent (figures that
  are reused from cache, and all other users of dom-fragment
  including scoped parsing), the fragment DOM is walked and all
  about-ids are reassigned fresh about ids.

* From an earlier patchset (now unrelated to the bug fixes here)
  * Renamed older badly named isEncapsulatedElt helper
    to isFirstEncapsulationWrapperNode.
  * Left behind helper to recognize when a node is an
    encapsulation wrapper (in case it comes handy later on).

* No change in parser tests.

  TODO: We need a parser test with extensions in them.

  {{echo|<div>foo</div> <math>1+2</math> <div>bar</div>}} would
  not RT properly before this patch because the inner <math> node
  did not have the about-id as the surrounding <div>s. This patch
  fixes this.

  This should also fix a lot of the <timeline> regressions seen
  in latest RT testing.

Change-Id: I595e9f46d8ce789a05e4b7dd8b58e443e4c02f98
2013-10-11 13:42:27 -05:00