bug#53715: 29.0.50; [PATCH] Improve correctness of pipelines in Eshell

[Jim Porter]

On 2/2/2022 10:10 AM, Lars Ingebrigtsen wrote:
> These patches seem to lead to a number of tests failing:
>
> Test eshell-test/last-result-var2 condition:
>      (void-variable eshell-last-async-proc)
>     FAILED  22/34  eshell-test/last-result-var2 (0.001074 sec) at 
> lisp/eshell/eshell-tests.el:164
>     passed  23/34  eshell-test/lisp-command (0.000350 sec)
>     passed  24/34  eshell-test/lisp-command-args (0.000308 sec)

Sorry, I forgot to mention that since the second patch updates a 
defsubst (`eshell-interactive-process'), you'll need to recompile all 
the files that might use it, so `make boostrap' or `touch 
lisp/eshell/*.el test/lisp/eshell/*.el && make'. That should make these 
tests pass.

Once this merges, I'll send a message to emacs-devel to let everyone 
know to recompile these files so there are no surprises when they try to 
use Eshell later on.