bug#37408: 27.0.50; list-processes can hang

[Lars Ingebrigtsen]

Eli Zaretskii <eliz@gnu.org> writes:

> Wait with a timeout? check for C-g while waiting?

I don't know what a reasonable timeout would be that would cover all
cases where this function may be used, so passing in a timeout might be
the solution.  `list-processes', for instance, don't need the
information for anything other than (minor) display purposes, so it
could pass in zero as a "don't wait" would make sense there.

Checking for `C-g' (and then returning nil if given) would also be a
possibility, but would be less useful for non-interactive use...

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