expl3: Sequence stack

Jonathan Spratte <0000033164e32157-dmarc-request-0lvw86wZMd8wwC3q1xGJAzLcMfAFj/UcfwJ6n/[email protected]> Tue, 27 Oct 2020 12:48:10 +0100

Newsgroups	gmane.comp.tex.latex.latex3
Message-ID	<20201027114810.GJ886940@thinkarch>

Hi all,

I got two little questions concerning stacks in `expl3`.

1. What is the best way to build a stack for a sequence?

The naive way would be to use something like

    \seq_push:No \l_my_stack_seq \l_my_seq

to push and then

    \seq_pop:NN \l_my_stack_seq \l_my_seq

But this doesn't look like a clean usage of `\seq_pop:NN` and
`\seq_push:Nn`.

2. Should there be a higher level interface for stacks of the different
data types in `expl3`?


Best
Jonathan

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