VIM replaces $1, $2, $3 and $4 with parantheses

Question

When I write a text in VIM (insert mode) it automatically replaces: $1 with (), $2 with [], $3 with {} and $4 with:

{

}

For the other digits (E.g.: $5) it has an expected behavior.

How can I disable this replacement?

Edit:

1) If I type $, the caret remains about 1 second on that character. So, if I wait a little after typing $, it won't replace $1 with anything.

2) Output for :map $1 is:

v  $1          * <Esc>`>a)<Esc>`<i(<Esc> 

3) Output for :imap $1 is:

i  $1          * ()<Esc>i 

4) Output for :nmap $1 is:

No mapping found

5) I use many plugins, but according to the comments/answer, they are not relevant because there are some lines containing inoremap in my ~/.vimrc file.

Details:

• editor: VIM - Vi Improved 7.2
• O.S.: SUSE Linux

Answer 1

This is not the default behaviour of vim.

You probably have a map or an insert map for these keystrokes. You can verify this with a

:verbose map $1

or

:verbose nmap $1

which shows what mappings there are.

If this is indeed the case, the first place to look for definitions is in your .vimrc:

:e $MYVIMRC

then search for $1 and/or map in the .vimrc

Alternatively, you might have some plugin that does that.

Edited with the helpful comment of Marth (using verbose to find out where the mapping was defined).