bug#71554: 29.3; eshell-command async buffer behavior

[Christopher Howard <christopher@librehacker.com>]

Regarding my workflow, I'm generally using eshell-command for one of three things:

(1) To launch some long running external application, like a torified gemini browser. Always done with "&".
(2) To run some one-off command or pipeline of commands, like capturing the listing of a directory, manipulating some files, or grepping the output of a file and saving that to a buffer. Sometimes I use "&" depending on how quick I think it will be to finish.
(3) Something like the above, but the eshell-command call is inserted as elisp in some interactive function, when it is more convenient than start/call-process for some reason.

Regarding automatically reusing buffers... I lean a little towards not automatically reusing dead buffers, so that I know for sure that some eshell-command call in some other random command I've made doesn't overwrite command output while I am looking at it. My main concern here though is that I might end the work day with 39 dead eshell-command buffers, and not have a convenient way to clear them all out. Off hand, I'm not sure of what command to run which would delete all dead eshell-command buffers but not the live ones.

Regarding use case 3, I just want to mention for sure it would nice, however you set this up, so that I can call eshell-command from lisp, and not have to worry about user (me) being prompted about what to do with buffers. Then I could include eshell-command in timer code or such like and not have to worry about a prompt appearing unexpectedly in my work flow.

-- 
christopher Howard