[XeTeX] Embarrassing fontspec

[Jonathan Kew]

On 4 Jan 2006, at 8:35 am, Hans Hagen wrote:

> Will Robertson wrote:
>
> not using it, i have no clue what goes on in fontspec, but
>
>>
>> Looking at tracing an hbox when this craziness is going on   
>> demonstrates what's going on more clearly: (the \hbox is -4055pt   
>> wide?!?)
>>
>> > \box0=
>> \hbox(7.21+2.79)x-4055.02191
>> .\U/Hoefler Text (0)/m/n/10 test
>> .\glue *
>> .\U/Hoefler Text (0)/m/n/10 words
>>
> what is this "glue *" doing there (maybe jonathan knows when the *  
> is issued)

Looking in TeX: The Program, I see that this "*" comes from the  
print_spec procedure in module 178, and it looks like it can only  
appear if the glue specification has somehow become corrupted. This  
supports my feeling that we're seeing a XeTeX bug that shows up under  
conditions of extreme memory and/or font resource usage.

JK