Mapping <C, \> in vim

Question

I'm trying to add a key mapping from Ctrl-j to Ctrl-\ s. This is to make my life a bit easier when using cscope. I've tried the following mapping:

map <C-J> <C,\\>s

but it doesn't seem to do anything. I've also tried various combinations, such as map Ctrl-j Ctrl-<Bslash> s and nothing seems to work. I've consulted :help key-notation and :help map_backslash but as far as I can tell I'm following the directions in there to a T. What am I missing here?

Answer 1

Try this mapping:

map <C-J> <C-\>s