ntg-context - mailing list for ConTeXt users
 help / color / mirror / Atom feed
From: Marco Patzer <lists@homerow.info>
To: ntg-context@ntg.nl
Subject: Re: MetaPost label direction prefix
Date: Sat, 24 Aug 2013 14:31:42 +0200	[thread overview]
Message-ID: <20130824123142.GQ18239@homerow> (raw)
In-Reply-To: <5217FE32.7070909@wxs.nl>


[-- Attachment #1.1: Type: text/plain, Size: 1506 bytes --]

On 2013–08–24 Hans Hagen wrote:

>     startplaincompatibity ;
> 
>         label("first", origin);
> 
>         pair laboff.foo ; laboff.foo := (.5,-1) ;
>         labxf.foo := labyf.foo := 1 ;
> 
>         label.foo("second", origin);
> 
>     stopplaincompatibity ;

Brilliant! Thanks a lot. A few things:

1) Can you replace

  def useplainlabels =
    let label    = plain_label ;
    let thelabel = plain_thelabel ;
  enddef ;

with

  def useplainlabels =
    def label    = plain_label    enddef ;
    def thelabel = plain_thelabel enddef ;
  enddef ;

The minimal example works with your version, but the old MetaPost
code does not. The def variant works fine with both.

2) Replace

  startplaincompatibity  →  startplaincompatibility
   stopplaincompatibity  →  stopplaincompatibility

3) This one is truly optional and just a suggestion for a better
interface. Although it's nice to have the grouping in
start-stopplaincompatibility, it's not required here, since the
entire MetaPost instance runs in plain compatibility mode. It would
be nice to either have a non-grouped command:

  def plaincompatibility =
    scantokens plain_compatibity_data ;
  enddef ;

Or maybe even a higher-level switch:

  \defineMPinstance
    [fun-with-old-MP]
    [metafun]
    [compatibility=plain] %% default* | plain

> As I wouldn't be surprised if there were more differences we need
> to handle.

We will find out if things break.

Marco

[-- Attachment #1.2: Digital signature --]
[-- Type: application/pgp-signature, Size: 490 bytes --]

[-- Attachment #2: Type: text/plain, Size: 485 bytes --]

___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net
archive  : http://foundry.supelec.fr/projects/contextrev/
wiki     : http://contextgarden.net
___________________________________________________________________________________

  reply	other threads:[~2013-08-24 12:31 UTC|newest]

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

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20130824123142.GQ18239@homerow \
    --to=lists@homerow.info \
    --cc=ntg-context@ntg.nl \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).