[luatex] Incorrect setting of mu sizes with different styles?

[luigi scarso]

Il giorno Wed Jan 14 2015 at 7:54:06 PM luigi scarso <luigi.scarso at gmail.com>
ha scritto:

>
> On Mon, Jan 12, 2015 at 4:50 PM, Joseph Wright <
> joseph.wright at morningstar2.co.uk> wrote:
>
>> Hello all,
>>
>> With the example
>>
>>     \setbox0=\hbox{$\mkern18mu$}\message{\the\wd0}
>>     \setbox0=\hbox{$\scriptstyle\mkern18mu$}\message{\the\wd0}
>>     \bye
>>
>> pdfTeX gives
>>
>>     9.99976pt 8.19443pt
>>
>> whereas LuaTeX gives
>>
>>     9.99976pt 9.99976pt
>>
>> which suggests something is not right in terms of the interaction of the
>> size of the mu unit with math mode style.
>>
>> Is this a documented change or a bug?
>> --
>> Joseph Wright
>>
>
> Sorry for delay.
> We are seeing it now.
>
>
> it should be fixed in trunk with rev. 5125 .
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