#### View Issue Details

ID Project Category View Status Date Submitted Last Update 0000553 luatex feature request public 2011-01-09 12:20 2015-11-05 10:35 phi Hans Hagen normal feature have not tried closed fixed Mac OS X 10.6.6 0.65.0 0.85.0 0000553: Suggestion: an inner noad with extended behavior regarding spacing There are sometimes situations where we'd like to have a noad that normally behaves like an inner noad, but is treated by the spacing calculation as if preceded or succeeded by a void noad of a different class. A very common example is the construct $f \left(\frac12\right)$, where there is excessive spacing around the delimiters compared to the open/close noads $f(...)$. The current solution as implemented by various LaTeX packages is to write $\mathopen{} \mathclose{\left(\frac12\right)}$, which gives the desired behavior but were to break down should prescripts be implemented. Thus I propose the following: - Add a new noad type that behaves like an inner noad but has two fields that control the spacing behavior on the left and the right side - Add a field to the delim node type that controls the spacing behavior - Add new syntax to allow the creation of such nodes from TeX: \left\mathopen( and \right\mathclose), which is currently illegal but would be allowed by the change The following patch implements the suggested behavior: https://github.com/phst/unimath-extras/blob/master/luatex-patches/delimiter-classes.patch No tags attached.

#### Issue History

2011-01-09 12:20 phi New Issue
2011-01-09 23:35 Hans Hagen Note Added: 0000717
2011-01-10 09:04 Taco Note Added: 0000720
2011-01-10 09:36 Hans Hagen Note Added: 0000722
2011-01-10 21:25 phi Note Added: 0000723
2011-01-10 22:55 Hans Hagen Note Added: 0000724
2011-02-10 10:41 Taco Status new => assigned
2011-02-10 10:41 Taco Assigned To => Taco
2015-11-03 09:28 Hans Hagen Assigned To Taco => Hans Hagen
2015-11-03 09:29 Hans Hagen Note Added: 0001501
2015-11-05 10:35 Hans Hagen Note Added: 0001518
2015-11-05 10:35 Hans Hagen Status assigned => closed
2015-11-05 10:35 Hans Hagen Resolution open => fixed
2015-11-05 10:35 Hans Hagen Fixed in Version => 0.85.0