This Vim plugin allows to swap the left neighbor
of a given word in the current line with its right neighbor. This is useful
when you want to swap operands of an arithmetic or boolean expression, such as
a and b in a - b.
When using vim-plug, paste the following into your vimrc file and customize the mapping to your wishes:
Plug 'D4KU/vim-turnstile'
nnoremap <Leader>s :<C-U>call turnstile#turn('')<Left><Left>
The mapping positions your cursor in the command line between the quotes,
ready to enter the word whose neighbors are to be swapped. For example to
swap a and b in the expression a && b, pass &&.
The function also accepts a count, allowing you to specify a word to swap
neighbors of if it appears multiple times in the current line. For example
pressing 2\s+ and enter in normal mode - assuming backslash is your leader
key - over the line y = a + b + c; swaps b and c. A count of 1 is
assumed if none is given.