# [luatex] Spurious? Missing character warnings from luatex 0.80

Hans Hagen pragma at wxs.nl
Wed Aug 26 17:55:11 CEST 2015

On 8/26/2015 4:35 PM, David Carlisle wrote:
> On 26 August 2015 at 15:13, Hans Hagen <pragma at wxs.nl> wrote:
>
>
>>
>> fyi: the number changes because a non-char node is checked (so it then
>> depends on what is in the 'char' mem slot of that node) ... the checking is
>> somewhat different from pdftex because we need to make sure that kerning
>> between the nucleus and first script char (direct or in math sub list) is
>> done right (advanced otf kerning)
>>
>
>
> Ah, so do you mean the fix will be not to make this check in the cases
> that the node is not a char node?

$f_x$           char
$f_\hbox{x}$    box
$f_{x+1}$       mlist

we need to identify the first and third case as valid candidates for
kerning and the inspection code had a flaw triggered by the hbox

Hans

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