The vim wiki建议绑定，例如：
nnoremap <M-,> k:call search('^'. matchstr(getline(line('.')+1), '\(\s*\)') .'\S', 'b')<CR>^
nnoremap <M-.> :call search('^'. matchstr(getline(line('.')), '\(\s*\)') .'\S')<CR>^
同时提供更全面的解决方案：
" Jump to the next or previous line that has the same level or a lower
" level of indentation than the current line.
"
" exclusive (bool): true: Motion is exclusive
" false: Motion is inclusive
" fwd (bool): true: Go to next line
" false: Go to previous line
" lowerlevel (bool): true: Go to line with lower indentation level
" false: Go to line with the same indentation level
" skipblanks (bool): true: Skip blank lines
" false: Don't skip blank lines
function! NextIndent(exclusive, fwd, lowerlevel, skipblanks)
let line = line('.')
let column = col('.')
let lastline = line('$')
let indent = indent(line)
let stepvalue = a:fwd ? 1 : -1
while (line > 0 && line <= lastline)
let line = line + stepvalue
if ( ! a:lowerlevel && indent(line) == indent ||
\ a:lowerlevel && indent(line) < indent)
if (! a:skipblanks || strlen(getline(line)) > 0)
if (a:exclusive)
let line = line - stepvalue
endif
exe line
exe "normal " column . "|"
return
endif
endif
endwhile
endfunction
" Moving back and forth between lines of same or lower indentation.
nnoremap <silent> [l :call NextIndent(0, 0, 0, 1)<CR>
nnoremap <silent> ]l :call NextIndent(0, 1, 0, 1)<CR>
nnoremap <silent> [L :call NextIndent(0, 0, 1, 1)<CR>
nnoremap <silent> ]L :call NextIndent(0, 1, 1, 1)<CR>
vnoremap <silent> [l <Esc>:call NextIndent(0, 0, 0, 1)<CR>m'gv''
vnoremap <silent> ]l <Esc>:call NextIndent(0, 1, 0, 1)<CR>m'gv''
vnoremap <silent> [L <Esc>:call NextIndent(0, 0, 1, 1)<CR>m'gv''
vnoremap <silent> ]L <Esc>:call NextIndent(0, 1, 1, 1)<CR>m'gv''
onoremap <silent> [l :call NextIndent(0, 0, 0, 1)<CR>
onoremap <silent> ]l :call NextIndent(0, 1, 0, 1)<CR>
onoremap <silent> [L :call NextIndent(1, 0, 1, 1)<CR>
onoremap <silent> ]L :call NextIndent(1, 1, 1, 1)<CR>
其中使用：
-
[l and ]l跳转到与当前行具有相同缩进级别的上一行或下一行。
-
[L and ]L跳转到缩进级别低于当前行的上一行或下一行。
