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a function to show/hide line number for Vim
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| " show/hide line number wisely: this needs Vim 7.3 or above | |
| function! s:toggle_line_number() | |
| let NU = 'nu' | |
| let RNU = 'rnu' | |
| if &nu || &rnu | |
| " to be off | |
| let b:prev = { 'nu': &nu, 'rnu': &rnu } | |
| let &nu = 0 | |
| let &rnu = 0 | |
| else | |
| " restore previous setting | |
| let &nu = get(b:prev, 'nu', 1) | |
| let &rnu = get(b:prev, 'rnu', 1) | |
| endif | |
| endfunction | |
| nnoremap <silent> <Leader>tn :<C-u>silent call <SID>toggle_line_number()<Cr> |
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