[luatex] \lefthyphenmin = 0 or \righthyphenmin inhibits hyphenation

Patrick Gundlach patrick at gundla.ch
Tue Jun 15 08:31:20 CEST 2021

Hi all,


these settings (or one of them) inhibit hyphenation. Is that on purpose? 

This is LuaTeX, Version 1.12.0 (TeX Live 2020) 
 restricted system commands enabled.
Underfull \hbox (badness 10000) in paragraph at lines 3--3
[] \tenrm computer
(see the transcript file for additional information)
warning  (pdf backend): no pages of output.
Transcript written on test.log.


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