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From:         Joseph Wright <joseph.wright@MORNINGSTAR2.CO.UK>
Subject: Re: A package of the style filecontents(def) in expl3
To:           LATEX-L@LISTSERV.UNI-HEIDELBERG.DE
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Status: R

On 07/07/2019 06:20, Pablo Alfonso González Luengo wrote:
> Hi, this is the first time I subscribe to the list, I usually read it
> and I wasn't sure if I should write here or in the git repository.
> I have an idea in mind that took me years to write it, it is based on
> the following "TeX-SX" questions/answers:
> 
> Stack datastructure using LaTeX (https://tex.stackexchange.com/q/45946/7832)
> LaTeX equivalent of ConTeXt buffers (https://tex.stackexchange.com/q/5338/7832)
> Storing an array of strings in a command
> (https://tex.stackexchange.com/q/215563/7832)
> Collecting contents of environment and store them for later retrieval
> (https://tex.stackexchange.com/q/184503/7832)
> Collect contents of an environment (that contains verbatim content)
> (https://tex.stackexchange.com/q/373647/7832)
> 
> Many times it is necessary to write in temporary files and then
> include them in different parts of a document, for that is the great
> package "filecontents" (SP) or much better, the latest version of the
> package "filecontentsdef" (JFBU) to which kindly the author added the
> ability to store content (including verbatim) in a macro without
> having to write in temporary files.
> 
> Since "expl3" has an excellent way of storing data with l3seq and has
> the ability to write files, it would be a great contribution to have
> an official package from the LaTeX3 team that brings these ideas
> together.
> 
> I have tried to unite everything in a single package "scontents"
> (Store LaTeX content in Seq), totally amateur, as I am not an author
> of packages probably the code is not entirely correct and may never be
> public.  Of course it depends on "filecontentsdef" and "fvextra", I
> think that the dependence on "filecontentsdef" could be changed to
> 100% code "expl3" and leave the dependence on "fvextra(fancyvrb)".
> If this list is not the right place to write, let me know, if the idea
> I present is functional and can be improved would be great.
> 
> Greetings to all.

 From the outline, it sounds like a module "l3buffers" would be the 
ultimate desire here: correct?

Is there a particular reason for using a sequence rather than simply one 
tl per grabbed content?

Joseph