[luatex] delimiter stretching broken in 0.89.3

David Carlisle d.p.carlisle at gmail.com
Fri Mar 11 18:35:07 CET 2016

The following plain tex document

n \choose l

worked in 0.80 as in pdftex. I'm not sure quite which version it broke
at but in 0.89.3 it produces

This is LuaTeX, Version beta-0.89.3 (TeX Live 2016)
 restricted system commands enabled.
Overfull \vbox (15749.96411pt too high) has occurred while \output is active

and the brackets expand vertically for more than the page height.


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