Math & Science ⇒ Always automatically scaled Delimiters

[Willie]

Hello,

I would like to have all the delimiters (like '(', ')', '[', ']', '|' ...) automatically adjusted with \left and \right without me having to write it explicitly every time.

Is there a way to redefine them so that "(" would mean "\left("? I tried to use "\DeclarePairedDelimiter" from the mathtools package but didn't figure out how to define it; and if possible I would also like to use the same symbol "(" and not a new macro.

Thanks

[torbjorn t.]

The nath package does this for you, unfortunately it "does not work well with amsmath".

[Willie]

Thanks.
It is really unfortunate that it doesn't work well with amsmath. An unacceptable flaw I would say...
Does anyone else know of a useful package or a definition that enables the use of scaled parantheses?