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From: Marco Patzer <lists@homerow.info>
To: mailing list for ConTeXt users <ntg-context@ntg.nl>
Subject: MetaPost label direction prefix
Date: Fri, 23 Aug 2013 11:42:03 +0200	[thread overview]
Message-ID: <20130823094203.GG18239@homerow> (raw)


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Hi,

what is the reason the label direction prefix variables (rt, bot,
llft, etc.) are prefixed with mpfun_ in MkIV (mp-mlib.mpiv)? When
new directional prefixes are being defined it fails when mplib is
used unless the mpfun_ prefix is added. And likewise, code using the
mpfun_ prefix fails on traditional MetaPost.

Is this prefix required? It breaks old code and required a branch in
every new project. And I don't really see a reason for this
incompatibility. Here is an example defining a new direction “foo”:

\starttext
  \startMPcode
    label("first", origin);

    %% MkIV
    %% pair mfun_laboff.foo ; mfun_laboff.foo := (.5,-1) ;
    %% mfun_labxf.foo := mfun_labyf.foo := 1 ;

    %% MkII
    pair laboff.foo ; laboff.foo := (.5,-1) ;
    labxf.foo := labyf.foo := 1 ;

    label.foo("second", origin);
  \stopMPcode
\stoptext

Marco

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             reply	other threads:[~2013-08-23  9:42 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-08-23  9:42 Marco Patzer [this message]
2013-08-23 12:48 ` Hans Hagen
2013-08-23 13:14   ` Marco Patzer
2013-08-24  0:28     ` Hans Hagen
2013-08-24 12:31       ` Marco Patzer
2013-08-25 11:49         ` Hans Hagen

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