Re: Yet Another buffer question

On Thu, Apr 16, 2026 at 19:53 (+0200), Wolfgang Schuster wrote:

> Am 16.04.2026 um 19:46 schrieb Wolfgang Schuster:
>> Am 16.04.2026 um 19:33 schrieb Jim via ntg-context:
>>> Possibly the last buffer question for IBD 2026...

>>> Suppose someone wants to use a buffer in a solution to some typesetting
>>> problem which involves more than a simple \getbuffer or \typebuffer or
>>> \typesetbuffer.

>>> They could define something like

>>>          \def\usebuf#1{...use buffer #1 as needed...}

>>> and later do

>>>          \startbuffer[mybuf]
>>>          <content>
>>>          \stopbuffer
>>>          \usebuf{mybuf}

>>> But this isn't in the spirit of the
>>>          \startsomething
>>>          <content>
>>>          \stopsomething
>>> paradigm.

>>> How does one define a \start-\stop "environment" that
>>> -> collects some content into a buffer, and then
>>> -> does whatever one needs to do with that content ?

>> There is

>> %%%% begin example
>> \definebuffer[Jim]

>> \starttext

>> \startJim
>> This is Jim’s buffer!
>> \stopJim

>> \typeJim \getJim

>> \stoptext
>> %%%% end example

> You can also define a \stopXXX command where you can load the buffer content
> and do something with it once you reach the end of the buffer, this is a
> feature of the environment itself.

> %%%% begin example
> \definebuffer[Jim]

> \protected\def\stopJim
>   {\startframedtext
>    \getJim
>    \stopframedtext}

> % alternative way to define \stopJim
> %\starttexdefinition protected stopJim
> %  \startframedtext
> %  \getJim
> %  \stopframedtext
> %\stoptexdefinition

> \starttext

> \startJim
> This is Jim’s buffer!
> \stopJim

> \stoptext
> %%%% end example

Wolfgang,

thanks very much for this and your previous answer.

This one, which executes a macro upon \stopJim, is what I was really
thinking of when I asked the question.

Your previous answer does have the virtue that it points out a few more
commands that I could go and try to figure out.

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

maillist : [email protected] / https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl
webpage  : https://www.pragma-ade.nl / https://context.aanhet.net (mirror)
archive  : https://github.com/contextgarden/context
wiki     : https://wiki.contextgarden.net
___________________________________________________________________________________