Diff 模式下，让光标直接跳转到被修改的文本处
function! Jump2PrevDiffText()
let line=line(".")
let idx=col(".")-1
if synIDattr(diff_hlID(line, idx), "name")=="DiffChange" || synIDattr(diff_hlID(line, idx), "name")=="DiffText"
while idx>0
if synIDattr(diff_hlID(line, idx), "name")=="DiffText" && synIDattr(diff_hlID(line, idx-1), "name")!="DiffText"
call setpos(".", [0,line,idx])
break
elseif idx==1
let line=line(".")
let cols=col(".")
exec "normal [c"
if line==line(".") && cols==col(".")
return
elseif synIDattr(diff_hlID(".", 1), "name")=="DiffChange" || synIDattr(diff_hlID(".", 1), "name")=="DiffText"
call setpos(".", [0,line("."),col("$")-1])
call Jump2PrevDiffText()
endif
break
else
let idx = idx-1
endif
endwhile
else
let line=line(".")
let cols=col(".")
exec "normal [c"
if line==line(".") && cols==col(".")
return
elseif synIDattr(diff_hlID(".", 1), "name")=="DiffChange" || synIDattr(diff_hlID(".", 1), "name")=="DiffText"
call setpos(".", [0,line("."),col("$")-1])
call Jump2PrevDiffText()
endif
endif
endfunction
function! Jump2NextDiffText()
if synIDattr(diff_hlID(".", col(".")), "name")=="DiffChange" || synIDattr(diff_hlID(".", col(".")), "name")=="DiffText"
let line=line(".")
let cols=col("$")-1
let idx=col(".")+1
while idx<=cols
if synIDattr(diff_hlID(line, idx), "name")=="DiffText" && synIDattr(diff_hlID(line,idx-1), "name")!="DiffText"
call setpos(".", [0,line,idx])
echo line.",".idx.",".cols
break
elseif idx==cols
let line=line(".")
let cols=col(".")
exec "normal ]c"
if line==line(".") && cols==col(".")
return
elseif synIDattr(diff_hlID(".", 1), "name")=="DiffChange" || synIDattr(diff_hlID(".", 1), "name")=="DiffText"
echoerr "inner"
call Jump2NextDiffText()
endif
break
else
let idx = idx+1
endif
endwhile
else
let line=line(".")
let cols=col(".")
exec "normal ]c"
if line==line(".") && cols==col(".")
return
elseif synIDattr(diff_hlID(".", 1), "name")=="DiffChange" || synIDattr(diff_hlID(".", 1), "name")=="DiffText"
call Jump2NextDiffText()
endif
endif
endfunction
" @see http://vim.wikia.com/wiki/Selecting_changes_in_diff_mode
if &diff
nmap <F7> :call Jump2PrevDiffText()<cr>
nmap <F8> :call Jump2NextDiffText()<cr>
else
map <F7> :cp<cr>
map <F8> :cn<cr>
endif
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