On 6/15/2024 12:10 PM, Eli Zaretskii wrote:
>    Test esh-cmd-test/which/plain/external-program condition:
[snip]
> 	:value nil :explanation
> 	(nonequal-result (command "which sh")
> 			 (result #("D:/usr/MSYS/bin/sh.exe\n" 22 23 ...))
> 			 (expected "d:/usr/MSYS/bin/sh.exe\n"))))
>       FAILED  59/66  esh-cmd-test/which/plain/external-program (0.003953 sec) at lisp/eshell/esh-cmd-tests.el:538
> 
> IOW: you run "which SOMETHING" and pretend to know how it will
> capitalize the drive letter.

Ah ha! If that's the only failure, then I think this would work? (If 
there are other failures, then I could add a PREDICATE argument to 
'eshell-command-result-equal' and use that in the necessary places.)