# Directory macros/latex/contrib/interval

% (C) Lars Madsen, daleif@math.au.dk, 2019/03/06
% This material is subject to the LaTeX Project Public License.
% for the details of that license.

This small package use the pgfkeys pacakge to solve the problem of
using the ]a,b[ syntax for indicating an open interval. Instead of
having to type this as \mathopen{]}a,b\mathclose{[} users can simply
use

\interval[open]{a}{b}        (= ]a,b[ with proper spacing)

Other usages include

\interval[open left]{a}{b}   (= ]a,b])
\interval{a}{b}              (= [a,b])

We also provide a simple interface to switch to the more convenient
(a,b) tradition for specifying an open interval.

See the manual for details.

* v0.4:
Added \ointerval, \linterval, \rinterval short hands (suggested by Frank Mittelbach).
They are just shots ways to say, say, \interval[open]{a}{b}, etc.

Removed \intervalsetup (now gives an error if used, was set to equal \intervalconfig)

* v0.3: added the colorize option
* v0.2: typo in manual



When typing an open interval as $]a,b[$, a closing bracket is being used in place of an opening fence and vice versa. This leads to the wrong spacing in, say, $]-a,b[$ or $A\in]a,b[=B$. The package attempts to solve this using: