Khan/KaTeX — pull request #101 by kevinb7 (2014-09-22 02:56:52+00:00)
Title: added support for \over

Implements feature requested in issue https://github.com/Khan/KaTeX/issues/74. It converts the infix operator \over to a \frac, examples:
- 1 \over 2 -> \frac{1}{2}
- 1+2i \over 3-4i -> \frac{1+2i}{3-4i}
- \displaystyle 2 \over 3 -> \frac{\displaystyle 2}{3} @spicyj: thanks for finding this bug

It handles the \over in a general enough way that we can add other infix operators by simply adding an entry to functions.js.