sympy/sympy — pull request #1311 by gdevanla (2012-05-25 11:25:34+00:00)
Title: minor changes to enable resizing of '(' and ')' using \left and \right commands

This change is to enable automatic re-sizing of '(' and ')' parens for latex output. Using the
\left and \right commands re-sizes the braces based on the contents within the parens.