ntg-context - mailing list for ConTeXt users
 help / color / mirror / Atom feed
From: Gerben Wierda <gerben.wierda@rna.nl>
To: Wolfgang Schuster <wolfgang.schuster.lists@gmail.com>
Cc: mailing list for ConTeXt users <ntg-context@ntg.nl>
Subject: Re: How do I handle strings with " characters in it in METAPOST?
Date: Sun, 29 Mar 2020 16:25:55 +0200	[thread overview]
Message-ID: <486B6941-5A01-406F-96B2-898DF824FBFE@rna.nl> (raw)
In-Reply-To: <84b1bf6c-d34b-ec3a-d574-2d730c3e09c0@gmail.com>


[-- Attachment #1.1: Type: text/plain, Size: 2917 bytes --]

We should move this to the thread

What alternative for scantokens( "btex " & texcommands & " etex”)?

I’ve put my vardef there. The calls to this vardef are created by lua code.

I need to fix two things: use a string variable to build a btex-etex construct and be able to use (almost) any character in that variable. 

I can adapt the strings, if I know what I have to replace things with. I can manipulate the strings while still in lua. But if I change it and then via MP hand it to a \type{} statement in ConTeXt the replacement will be typeset literally. So, it will be pretty complex. If I drop the use of \type{} inside the btex-etex I have to ‘escape' everything that TeX doesn’t see as normal text catcode. That, again might play havoc with breaking words across lines later.

G

> On 29 Mar 2020, at 15:09, Wolfgang Schuster <wolfgang.schuster.lists@gmail.com> wrote:
> 
> Gerben Wierda schrieb am 29.03.2020 um 15:06:
>>> On 29 Mar 2020, at 14:35, Wolfgang Schuster <wolfgang.schuster.lists@gmail.com <mailto:wolfgang.schuster.lists@gmail.com>> wrote:
>>> 
>>> Gerben Wierda schrieb am 29.03.2020 um 14:30:
>>>>> On 29 Mar 2020, at 12:58, Wolfgang Schuster <wolfgang.schuster.lists@gmail.com <mailto:wolfgang.schuster.lists@gmail.com>> wrote:
>>>>> 
>>>>> Gerben Wierda schrieb am 29.03.2020 um 12:52:
>>>>>> I am using MetaFun (Lua code) to create METAPOST commands from an XML file. One of the issues I am running into that in METAPOST I have to handle strings with " characters in them and METAPOST doesn’t like those. The argument using the string
>>>>>> Foo "Bar” Foo
>>>>> 
>>>>>     ^^^
>>>>> 
>>>>> Use correct left quotation marks or \quotation{…}.
>>>> I’m not hard coding the string, I’m reading it from an XML. So, whatever I do, I need to do it by manipulating the string.
>>>> E.g. if the string I read contains
>>>> Foo "Bar” Foo
>>>> your suggestion means  I have to programmatically change that to
>>>> Foo \quotation{Bar} Foo
>>>> which is too complicated, given that I don’t have regular expression replace at my disposal.
>>>> I might be able to change al “ instances into something else by walking through the string and building a new one.
>>> 
>>> Your example uses " before Bar and not “ which is the problem.
>> Yes, I am aware that that is my problem. It is just that I do not have the luxury to decide myself what will be put in the string. It must work for any string. So, I will have to be putting that string to \type and make sure that is used as the label.
> 
> Does btex .. etex help or can't you change the strings and replace the quotation marks before you pass them to MetaPost?
> 
> \starttext
> 
> \startMPcode
> draw textext.urt("One");
> draw btex "Two" etex shifted (0,15);
> label.urt("Three",(0,30));
> label.urt(btex "Four" etex,(0,45));
> \stopMPcode
> 
> \stoptext
> 
> Wolfgang


[-- Attachment #1.2: Type: text/html, Size: 5967 bytes --]

[-- Attachment #2: Type: text/plain, Size: 493 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://context.aanhet.net
archive  : https://bitbucket.org/phg/context-mirror/commits/
wiki     : http://contextgarden.net
___________________________________________________________________________________

      reply	other threads:[~2020-03-29 14:25 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-29 10:52 Gerben Wierda
2020-03-29 10:58 ` Wolfgang Schuster
2020-03-29 12:30   ` Gerben Wierda
2020-03-29 12:35     ` Wolfgang Schuster
2020-03-29 13:06       ` Gerben Wierda
2020-03-29 13:09         ` Wolfgang Schuster
2020-03-29 14:25           ` Gerben Wierda [this message]

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=486B6941-5A01-406F-96B2-898DF824FBFE@rna.nl \
    --to=gerben.wierda@rna.nl \
    --cc=ntg-context@ntg.nl \
    --cc=wolfgang.schuster.lists@gmail.com \
    /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).