On 1/19/2022 9:35 AM, Daniel Mendler wrote:
> 1. Start emacs -Q
> 2. M-x eshell
> 3. Enter "ls > #<" for buffer redirection.
> 4. Pressing TAB results in an args-out-of-range error, see below.
> 
> It seems that completing buffer names is not supported. This feature
> would be nice to have. However in any case, no args-out-of-range error
> should occur.

Here's a patch for this, with a few tests. Note that it depends on my 
patches in bug#61221, so it can't merge quite yet.