bug#56963: 29.0.50; trampified make-empty-file on macOS

[Michael Albinus]

dick <dick.r.chiang@gmail.com> writes:

Hi,

> Oh, it's probably just "echo -n" not being portable in
> tramp-sh-handle-write-region.  I attach the instrumented log
> as per your instructions.

Thanks. Well, there is a missing space in the command:

> 2022-08-04T08:34:37.0618380Z 08:29:48.506172 tramp-send-command (6) # echo -n 
> "">/var/folders/24/8k48jl6d249_n_qfxwsl6xvm0000gn/T/tramp-testB8ibE4

Would it work if the command is

--8<---------------cut here---------------start------------->8---
echo -n "" >/var/folders/24/8k48jl6d249_n_qfxwsl6xvm0000gn/T/tramp-testB8ibE4
--8<---------------cut here---------------end--------------->8---

If not, what else would be portable? Something like this?

--8<---------------cut here---------------start------------->8---
cat </dev/null 
>/var/folders/24/8k48jl6d249_n_qfxwsl6xvm0000gn/T/tramp-testB8ibE4
--8<---------------cut here---------------end--------------->8---

Best regards, Michael.