Subs/Functions in C shell?

[stackdump]

Does csh support subs/functions within the script? I don't want to write subs in separate files for the application I'm working on. So something like;

Function MySub(args)
# do stuff
End Function

and then;

MySub(MyArg)

 

[stackdump]

I have found out that aliases can be defined, so I can do the code below. The problem I have now is that some ARGS may not exist, any ideas how I can do this?;

alias Setup ' \
if ($?ARG1) then \
if ($?ARG2) echo "Using" ARG1 \
setenv ARG3 ARG1 \
else \
if ($?ARG2) echo "Default" \
setenv ARG3 ARG4 \
endif \
set path = ( ARG5 ) \
'

Setup ARG1 ARG2 ARG3 ARG4 ARG5