Are there any plans to have the LaTeX automatically read all ( and ) to automatically become \left( and \right)?
If so, then when can we expect the update?

  • 5
    Several discussions on why this isn't as easy as you'd expect, including this one. Feb 22 '15 at 4:19
  • 3
    I hope there aren't; at least not with the current behaviour of \left and \right. Feb 22 '15 at 4:22
  • 1
    Why would you want this behavior?
    – Mico
    Feb 22 '15 at 5:39
  • 4
    There is no such plans, since you'd have even more people wanting this behaviour removed. There already exists a package or some solutions that encourage this behaviour. See Macro for \left( and \right). If this solves your problem, then this is a duplicate. Give some feedback.
    – Werner
    Feb 22 '15 at 6:30
  • 1
    For a posting that discusses some of the downsides of (over)using \left and \right, see Is it ever bad to use \left and \right?
    – Mico
    Feb 23 '15 at 3:18

No. There are no plans to change the behaviour. As seen in many answers on this site many people over-use \left \right, when a simple ( or a fixed size such as \bigl( would be preferable.

\left\right don't always choose the optimal size, they almost always introduce some extra horizontal space, and they have to be matched within the same TeX group which causes problems if you want to split the term over a multi-line expression.

  • 1
    @ColeJohnson Not sure that I understand the comment, LaTeX's current version is 2e, but in any case the behaviour of \left\right is really a TeX feature and not anything LaTeX can do much about. Feb 22 '15 at 18:24
  • correct. My mistake. I was thinking of TeX's version asymptotically approaching pi. Forgot about LaTex being 2e
    – Cole Tobin
    Mar 3 '15 at 16:42

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