Add support for \phantom

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Summary:
Using \phantom with non-phantom math in Perseus doesn't render to be the
same size because \phantom uses MathJax and the non-phantom math uses KaTeX.
Implementing \phantom in KaTeX should solve this alignment issue.

Test Plan:
[x] write (and run) unit tests
[x] create (and run) screenshotter tests

Reviewers: emily

Reviewed By: emily

Differential Revision: https://phabricator.khanacademy.org/D16720

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This commit is contained in:

Kevin Barabash

2015-03-13 16:24:04 -06:00

parent 51d751f96d

commit 39f5bcb042

7 changed files with 148 additions and 23 deletions

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