Mac – Move cursor to beginning of non-whitespace characters in a line in Vim

I have been using this for some time now:

function! InsertTabWrapper()
    let col = col('.') - 1
    if !col || getline('.')[col - 1] !~ '\k'
        return "\<tab>"
    else
        return "\<c-p>"
    endif
endfunction

inoremap <tab> <c-r>=InsertTabWrapper()<cr>

This lets you use the tab key normally when the cursor is at the beginning of a line or not on a word, otherwise it executes the control-p completion key—you may change it to <c-n> for your use, although I find <c-p> more useful.

[Although I have modified it, the original idea for this probably came from the Vim Users' mailing list, but I did not keep any notes about where I got it.]

To move to the beginning of the next line, hit Enter. See :help <CR>.

To make right and l wrap to the beginning of the next line, add > and l to the 'whichwrap' option, e.g.,

:set whichwrap+=>,l

Similarly, to make left and h wrap to the end of the previous line, add < and h to the 'whichwrap' option, e.g.,

:set whichwrap+=<,h

See :help 'whichwrap'.

I don't know of a single-key shortcut to move to the end of the previous line, but with those 'whichwrap' settings, 0h or 0left would work, and you could possibly map either of those to some key you don't often use.