bug#73722: 30.0.91; error calling eshell/clear with no argument

[Jim Porter]

On 10/16/2024 11:04 AM, Jim Porter wrote:
> Ok, pushed the one-liner fix to the release branch as d3c94102266. I'll 
> leave this open to work on a better fix for the master branch.

And here's a patch for the master branch. I split out 'eshell/clear' 
into two versions: one for interactive (from M-x) use, and one for use 
as "clear" at the Eshell prompt. For compatibility, you can still call 
'eshell/clear' interactively from M-x, but 99% of the time the 
'eshell/FOO' commands aren't meant to be used that way; hence the new 
'eshell-clear'.

0001-Fix-and-improve-behavior-of-eshell-clear.patch
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