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It is very rare for me to need a parenthesis without \left and \right. Is there a way to redefine the parenthesis () to being treated as if I wrote \left( and \right). Of course, I would need another command \noleft( and \noright) or something similar to get back the original meaning.

I know I can run a Perl script before every latex compilation to achieve this, but I am looking for a LaTeX solution.

marked as duplicate by Werner, Mico, user13907, Seamus, percusse Dec 3 '15 at 10:00

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    It is very rare for me to need a parenthesis without \left and \right… How so? Can you give an example of an expression? (If it's a minimal compilable document, even better, just to save a few keystrokes to the people that's going to help you.) – Manuel Dec 3 '15 at 7:22
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    Overusing \left and \right is a bad idea: tex.stackexchange.com/questions/173717/…. Please think carefully about this. It's possible that when you say it's rare for you to need parentheses without \left and \right you are, in fact, not using them correctly. Only use them if you need to scale the delimeters - and there, you may still be better off manually selecting e.g. \bigl( – Au101 Dec 3 '15 at 7:26
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    If you're looking for information as to why autosizing all parentheses -- e.g., via \left( and \right) -- is not advisable from a typographic point of view, please see the postings Is it ever bad to use \left and \right? and "(" or "\left(" parentheses? – Mico Dec 3 '15 at 8:08

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