Support regex input

[bohrshaw]

With regex input supported, for example, these jumps would be possible:

" Alternative searching, flexibility improved
nnoremap g/ :call sneak#wrap('', 99, 0, 2, 1)<CR>\v
" Jump around word boundaries, accuracy improved
nnoremap \\w :call sneak#wrap('', 4, 0, 2, 1)<CR>\v<

[justinmk]

Thank you! What are some example inputs that you use? I can use those examples to add some tests.

[bohrshaw]

I suppose the the pattern parsing is correct. But there are probably problems when inputting patterns in vmap, omap or in streak mode. Additional integration would be done.

My initial intention for adding pattern input is that, by defining specific mappings, we can jump to common text objects, which is currently all I need. I define a simple wrapper function and some mappings which seems work well.

function! Sneak(pre, post, reverse)
  let n = getchar()
  if n == 27 | return | endif
  let c = nr2char(n)
  call sneak#to('', a:pre.c.a:post, 1, 1, 0, a:reverse, 2, 0)
endfunction
nnoremap <silent> 8w  :call Sneak('\v<',      '',       0)<CR>
nnoremap <silent> 8b  :call Sneak('\v<',      '',       1)<CR>
nnoremap <silent> 8e  :call Sneak('\v',       '>',      0)<CR>
nnoremap <silent> 8ge :call Sneak('\v',       '>',      1)<CR>
nnoremap <silent> 9w  :call Sneak('\v\_s\zs', '',       0)<CR>
nnoremap <silent> 9b  :call Sneak('\v\_s\zs', '',       1)<CR>
nnoremap <silent> 9e  :call Sneak('\v',       '\ze\_s', 0)<CR>
nnoremap <silent> 9ge :call Sneak('\v',       '\ze\_s', 1)<CR>