From: Damien Thiriet <damien@thiriet.web4me.fr>
To: ntg-context@ntg.nl
Subject: Re: troubles with \MPinclusions (Taco Hoekwater)
Date: Thu, 21 Feb 2019 12:20:08 +0100 [thread overview]
Message-ID: <20190221112008.GA51198@valencay.home> (raw)
In-Reply-To: <mailman.649.1550746197.1205.ntg-context@ntg.nl>
Thanks for your answers, I could significantly reduce my long
timeline code.
> 1. Variable names x and y are special and cleared before
> every graphic. This is related to the fact that “z" is
> defined as a shortcut for "(x,y)”. Both of these are
> traditional.
>
> Every metapost graphic does at least this at its start:
>
> save x,y;
> currentpicture := nullpicture;
> currentpen:=defaultpen;
>
> so pair xx[]; would have worked just fine.
>
> In general, I would advice to stay away from single-letter
> variable names inside MPinclusions, and use CamelCase
> to avoid clashes with metafun internals.
>
So, got one more z-related error in Metapost. I bet this is
absolutely the n.1 on help-lists. Btw, if I were a scientist,
I'd realized that defining x as a pair is quite heretic…
And that sounds much familiar to an historian.
Damien Thiriet
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parent reply other threads:[~2019-02-21 11:20 UTC|newest]
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