Re: Path easy-search

Am 06.04.2011 20:05, schrieb Tim Chase:
> On 04/06/2011 12:50 PM, Christian Brabandt wrote:
>>> ? n n n n searches repeatedly backwards. Then hit N to
>>> search forward, and n to search backward again.
>>
>> I *know* that. Just my fingers...
>>
>> (When I navigate code and jump around a lot, I tend to forget,
>> in which direction I originally searched. I usually only know
>> that I want to move downwards, so I hit 'n' and I hate when
>> Vim moves upwards...)
>
> And the only thing worse than expecting "n" to move downwards only to have it move upwards is having a file that's so similar (such as a long tab/CSV file) where you can't readily tell whether you've gone up or down :)
>
> I confess, while Vim has a profusion of options, that's one I wouldn't mind seeing...something that toggled between "n means next in the same search-direction as last time" and "n means search downward in the file". I suppose I could do something like
>
> :nnoremap n /<cr>
> :nnoremap N ?<cr>
>
> if it really bugged me that much.

Heh, around 2007 I almost got a headache around this ...

* what's wrong with "n" and "N"
After "d//e" (delete to end of match), "n" (from now on) moves to the
_end_ of the next match, which has become the last search pattern (not
wanted!); also I want "n" to always go forward and "N" go backward
* Solution:
:no n //<cr>
:no N ??<cr>
Problem: First item in the search history ("/" + "Ctrl-P") now is "//" and
not the last search string, I have to press Ctrl-P again (annoying,
because "//" is useless)
* Solution:
:no <silent> n //<cr>:call histdel('/',-1)<cr>
:no <silent> N ??<cr>:call histdel('/',-1)<cr>
Problem: The current search string is no longer echoed (but with <silent>
omitted, ":call histdel(..." will be echoed, even worse).
* Solution:
:no <silent> n //<cr>:call histdel('/',-1)<bar>echo '/'.histget('/',-1)<cr>
:no <silent> N ??<cr>:call histdel('/',-1)<bar>echo '/'.histget('/',-1)<cr>
Problem: The message "search hit BOTTOM, continuing at TOP" is overwritten
by the explicit echo.
* Solution:
:no <script> n //<cr><sid>histdel
:no <script> N ??<cr><sid>histdel
:no <silent> <sid>histdel :call histdel('/',-1)<cr>
Problem: Doesn't work for Visual mode. [21-10-2007]
* Solution:
:no <script> n //<cr><sid>histdel
:no <script> N ??<cr><sid>histdel
:nn <silent> <sid>histdel :call histdel('/',-1)<cr>
:vn <silent> <sid>histdel :<c-u>call histdel('/',-1)<cr>gv
Problem: In Visual mode this produces flickering, Command-line turns
Visual mode off when pressing Enter).
* Solution:
:no <script> n //<cr><sid>histdel
:no <script> N ??<cr><sid>histdel

:nn <silent> <sid>histdel :call<sid>histdel(0)<cr>
:vn <silent> <sid>histdel :<c-u>call<sid>histdel(1)<cr>

:func! <sid>histdel(vmode)
: if a:vmode
: normal! gv
: endif
: call histdel('/',-1)
:endfunc
Problem: If cursor is at `> in Visual mode and `< is not on screen, cursor
positioning is like after doing "oo" (flip to `< and back).
* Solution:
I thought
:vn <silent> <sid>histdel :<c-u>call<sid>histdel(1, line("w0"))<cr>
could help restoring the old position, but it fails.
Although the cursor is at `>, line("w0") always refers to `<, why?

(didn't further investigate here)

What I have now in the vimrc:

ono m //e<CR>
xn <script> m //e<SID>SelOff<CR>
cno <expr> <SID>SelOff &sel=="exclusive" ? "+1" : ""
" do the right thing after o_//e and .
no <script> n //<CR><SID>HistDel
no <script> N ??<CR><SID>HistDel
sunm n|sunm N
nn <silent> <SID>HistDel :call<sid>HistDel(0)<CR>
vn <silent> <SID>HistDel :<C-U>call<sid>HistDel(1)<CR>
ino <silent> <SID>HistDel <C-R>=<sid>HistDel(0)<CR>
func! <sid>HistDel(vmode)
if a:vmode
normal! gv
endif
call histdel('/', -1)
return ""
endfunc

--
Andy

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