Subject: bug#23791: 25.1.50; w32-shell-execute hangs

From: Kazuhiro Ito <[email-masked]>
Date: Sat, 18 Jun 2016 17:27:58 +0900

On MSYS2 64bit build from trunk and emacs-25 branch, emacs hangs when
w32-shell-execute is called with "open" operation (no CPU usage, but
not respond to C-g).

(w32-shell-execute "open" "D:/test.pdf")

The bevhavior seems to depend on target.  For example, "a shortcut for
'Cygwin Terminal'" has no problem, but "cmd.exe" hangs emacs and
cmd.exe is not executed.  Overmore, Cygwin build (both 32bit and
64bit) from the same source has no problem.

-- 
Kazuhiro Ito