I don’t know what happened to my last reply but it should have been this.
I’m not sure about this but I suspect that it doesn’t involve parsing. It’s likely that the metapost expects a parameter or parameters to be passed to it which it then assigns to the variable Q in its own procedure. It won’t care what the calling program calls it. I think the arrowhead is probably defined within an arrow class (arrow.h perhaps).
Dave Clucas
dave.clucas(a)icloud.com
Exploring the World - One cave at a time
> On 31 Mar 2018, at 18:00, therion-request(a)speleo.sk wrote:
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> 1. Re: scaling line ornamentation - metapost (Bruce Mutton)
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> Date: Sat, 31 Mar 2018 09:27:56 +0800
> From: Dave Clucas <dave.clucas(a)icloud.com>
> To: therion(a)speleo.sk
> Subject: Re: [Therion] scaling line ornamentation - metapost (Bruce
> Mutton)
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