# Re: horizontal curly braces.

• To: math-font-discuss@cogs.susx.ac.uk
• Subject: Re: horizontal curly braces.
• From: alanje@cogs.susx.ac.uk (Alan Jeffrey)
• Date: Tue, 17 Aug 93 17:24 BST

>by the way, when considering whether to use rules
>for extenders or small pieces, take into account that the rule
>approach yields lengths that exactly match the material being
>braced, while pieces will yield only an approximation.

In the case of \overbrace and \underbrace you can use leaders to fill
the material precisely, in a similar fashion to \rightarrowfill.  An
appropriate definition would be something like (er, codes off the top
\def\downbracefill{$\m@th\braceld \braceextd\mkern-\braceextwidth \cleaders\hbox{\braceextd}\hfill \mkern-\braceextwidth\braceextd \bracemidd \braceextd\mkern-\braceextwidth \leaders\hbox{\braceextd}\hfill \mkern-\braceextwidth\braceextd \bracerd$}