bug#45610: 27.1; Symbol’s function definition is void: seq-concatenate

[Leo Liu]

On 2021-01-02 18:30 +0200, Eli Zaretskii wrote:
> Wouldn't that make it even slower? 

Indeed. But my suggestion to remove it was based on the fact that
cl-concatenate depends on another package at runtime, unlike other items
on that list.

> And cause incompatibilities with already byte-compiled files that saw
> the original cl-macs.el?
>
> But I'm not an expert on these issues, so I'l defer to Stefan and Lars
> here.

I am curious too.