[metapost] Re: all intersections between two paths

[Hans Hagen]

Dan Luecking wrote:
> At 03:00 AM 1/20/2005, you wrote:
> 
>> Larry Siebenmann wrote:
>>
>>> When writing macros common to MF and MP, is there
>>> a *conventional* way for macros to decide which of MF or MP
>>> is running?
>>
>>
>> boolean ThisIsMp ;
>>
>> ThisIsMp := known miterlimit ;
>>
>> message if ThisIsMp : "METAPOST" else : "METAFONT" fi ;
>>
>> end .
> 
> 
> This is what I use in grafbase.mf,mp (part of mfpic):
> 
> boolean METAPOST;
> METAPOST := known color Karl Frederich Gauss; % :-)
> 
> While MF doesn't know miterlimit by default, it could conceivably
> be defined as a variable by some previously loaded macro package.

ha, for the same reason i rejected things to do with color -)

the safest thing to do is probably to ask Don & John to add something

   mpversion
   mfversion

or maybe

   base_meta, being "font" or "post"

Hans

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