bug#62578: 30.0.50; [PATCH] Add regression tests for synchronous processes in Eshell

[Jim Porter]

On 4/1/2023 10:29 PM, Eli Zaretskii wrote:
> One minor nit: 'message' in a batch session prints to stderr, not to
> stdout.

!! Thanks for catching that. That actually means there's a small bug (or 
a missing feature) in Eshell: it doesn't support redirecting stdout and 
stderr to separate places when using synchronous subprocesses.

I've added a note about this to esh-proc.el (fixing it would probably be 
tricky), and changed 'message' in the tests to be 'princ'. See attached; 
I'll probably merge this tomorrow unless you catch any remaining issues.

0001-Add-tests-for-synchronous-processes-in-Eshell.patch
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