Mapping a default key binding in vim

Question

I want to remap Ctrl-] which is used for jumping to the tags to another key binding.

These mappings work:

:map <F2> <C-]>
:map <A-1> <C-]>

But this mapping doesn't work:

:map <C-1> <C-]>

What might be the reason for this?

Answer 1

I believe the problem is that Ctrl+1 is not a valid ASCII character. From this list

(search for "^^" or "^@" to see the table )

you will see that there are several keybindings such as ctrl+@ Ctrl+^ and Ctrl+]

so you are not actually calling Ctrl+2 or Ctrl+6 but their ASCII equivalents.

VIM is designed to be lightweight and fairly platform independent. so if it isn't in the list of ASCII characters you cannot make a binding to it.