bug#22203: 25.0.50; # is treated as a comment character in shell-command arg

[Wolfgang Jenkner]

On Fri, Dec 18 2015, Kaushal Modi wrote:

> (shell-command "echo abc#def" "*abc*")
>
> is treated as
>
> (shell-command "echo abc" "*abc*")

The last stop in the call chain before entering C-land is
`call-process-region'.  It might be interesting to see what arguments
that function is passed (M-x trace-function).

Wolfgang