Running a SFU POSIX shell on Emacs for Windows

[Neves-Graca, Sancho]

I use Services for Unix (SFU) from Microsoft and would like to access its C 
shell from Emacs shell mode. This does not currently seem possible with the 
environment variable SHELL or the line (setq explicit-shell-file-name 
"C:\WINNT\System32\posix.exe /u /c /bin/csh -l") in the configuration file. The 
shell is started by calling posix.exe with

        C:\WINNT\System32\posix.exe /u /c /bin/csh -l

It seems that Emacs does not pass the arguments /u /c /bin/csh -l to the 
executable posix.exe and therefore the shell is not started. Moving to Cygwin 
is not an option for many users of SFU. Could this missing functionality be 
considered by the Emacs development team?