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. Commented Feb 22, 2015 at 4:19
  • 3
    I hope there aren't; at least not with the current behaviour of \left and \right. Commented Feb 22, 2015 at 4:22
  • 1
    Why would you want this behavior?
    – Mico
    Commented Feb 22, 2015 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
    Commented Feb 22, 2015 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
    Commented Feb 23, 2015 at 3:18

1 Answer 1


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. Commented Feb 22, 2015 at 18:24
  • correct. My mistake. I was thinking of TeX's version asymptotically approaching pi. Forgot about LaTex being 2e
    – Cole Tobin
    Commented Mar 3, 2015 at 16:42

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .