tli@koh-sun2.usc.edu (Tony Li) (03/01/90)
I have a need for double brackets (e.g., [[ X^3 ]] ) as delimiters in some of the math that I've been doing. As noted in the TeXbook, [\![ does fine in the text sizes. However, when you start putting larger equations inside and using \left and \right, things don't look so good. To remedy this, I've been using the following macro, which I'm posting in case anyone else needs it. Improvements and comments are most welcome. \newbox\Dbrackbox \newbox\mathstrutbox \setbox\mathstrutbox\hbox{$\mathstrut$} \def\Dbrack#1{\mathopen{} \left\lbrack \setbox\Dbrackbox\hbox{$\left\lbrack #1\right\rbrack$} \ifnum\ht\Dbrackbox>\ht\mathstrutbox \mskip-4mu\box\Dbrackbox\mskip-4mu \else \!\box\Dbrackbox\! \fi \right\rbrack \mathclose{}} Tony Li - USC Computer Science Department Internet: tli@usc.edu Uucp: usc!tli Thus spake the master programmer: "A well written program is its own heaven; a poorly-written program its own hell."