We can't handle type which it's quickfix or location-list.

[mattn]

Hi, list.

We don't have a way to check that the buffer is quickfix or location-list.
Below's patch add "b:qflisttype" to be possible to check the type.

https://gist.github.com/mattn/6c8942fa063c2f3953bc

Please check this.

This patch is based on Hirohito Higashi (a.k.a h_east), he wrote help file too. Thanks.

- Yasuhiro Matsumoto

[Enno]

Thank you Yasuhiro,

This was lacking ever since.

[h_east]

Hi mattn!

2014/12/10(Wed) 14:15:27 UTC+9 mattn:

Please update your Gist.
(https://github.com/vim-jp/issues/issues/12)

Best regards,
Hirohito Higashi (a.k.a h_east)

[mattn]

Done! Thank u

[Daniel Hahler]

Am Mittwoch, 10. Dezember 2014 06:15:27 UTC+1 schrieb mattn:

> We don't have a way to check that the buffer is quickfix or location-list.
> Below's patch add "b:qflisttype" to be possible to check the type.
>
> https://gist.github.com/mattn/6c8942fa063c2f3953bc

Thanks.

This would have been useful here: https://github.com/bling/vim-airline/pull/656


Regards,
Daniel.

[Enno]

How about

let b:isLoc = len(getloclist(0)) > 0 ? 1 : 0

inside of a qf filetype window. See :h getloclist() that explains

For a location list window, the displayed location list is returned.

All credit to romainl at https://github.com/romainl/dotvim/blob/44e87b3fbb829145a23bd5b2be1807cc958308e5/bundle/qf/after/ftplugin/qf.vim

[h_east]

Hi Enno,

2015/2/4(Wed) 20:42:57 UTC+9 Enno:

A location list can be associated with a quickfix window.
In this case, it can not be determined correctly in this work-around.

Try this:
- move Vim source-code directory.
$ cd vim/src
- run vim (no vimrc, no plugin)
$ vim -N -u NONE screen.c

:vimgrep screen *.c
:copen
:echo len(getloclist(0)) " on quickfix window
0 " Correct
:lvimgrep update_screen *.c
:wincmd w
:lopen
:echo len(getloclist(0)) " on location list window
75 " Correct
:wincmd k
:echo len(getloclist(0)) " on quickfix window
75 " Not correct!


Our patch always returns correct value.
Thanks for the response.

[Enno]

Hello Hirohito,

Yep, this check has several issues. Yours stands, as well as that it fails when the qflist is empty.

More stable seems the following workaround attachched below, originally from

https://groups.google.com/forum/#!msg/vim_use/sfRlnrOwN2M/JAdzwHe51qYJ

but at the same time, it shows that this patch is called for.

--

In ~/.vim/ftplugin/qf.vim:

if exists('s:processing')
finish
endif
let listbufnr = bufnr("%")
let numwindows = winnr('$')
let altwin = winnr('#')
let curwin = winnr()
let s:processing = 1
copen
if curwin == winnr()
call setbufvar(listbufnr, 'isQuickfix', '1')
endif
" close the quickfix list if it was closed when we began
if numwindows != winnr('$')
cclose
endif
" return to quickfix/location list
exe altwin 'wincmd w'
exe curwin 'wincmd w'
unlet s:processing

Then a buffer of file type qf is a quickfix list if b:isQuickfix exists.

[h_east]

Hi Enno,

2015/2/5(Thu) 18:25:49 UTC+9 Enno:

I like simple way.
I dislike work-around.
I dislike complex way.

Our patch is very simple.
In fact, This patch is only two line.

> set_internal_string_var("b:qflisttype", (curwin->w_llist_ref
> == NULL) ? "quickfix" : "location");

What's dislike you this patch?

Let's go the simple way :-)

[Enno]

Hello Hirohito,

Your patch is perfect. In fact, by

"... it (= the below code) shows that this patch is called for"

I meant what you just wrote.

The sole value of the Vim script could be as a crutch (= awkward
and complex work-around) for Vim versions without your patch.

Enno

[Daniel Hahler]

Just for information/reference: I've gone ahead and created an issue for Neovim to include this useful patch: https://github.com/neovim/neovim/issues/4550

[Nikolay Aleksandrovich Pavlov]

You forgot documentation. I guess this will add at least five lines
(empty line, tag, description (two lines), empty line). More with
examples. See `:h b:current_syntax-variable`, but this should be put
somewhere in quickfix.c: e.g. somewhere under `:h w:quickfix_title`,
but please attach tag to the paragraph with description, *not* to the
:copen command like w:quickfix_title (e.g. I would suggest using
b:current_syntax as a reference, but place it where w:quickfix_title
is placed).

>
>> set_internal_string_var("b:qflisttype", (curwin->w_llist_ref

And also tests. I am not familiar with that part of Vim, but
`curwin->w_llist_ref == NULL` looks suspicious: what if you *first*
create a location list and then from the same window create a location
list? This and the opposite (first quickfix) should be tested.

>> == NULL) ? "quickfix" : "location");
>
> What's dislike you this patch?
>
> Let's go the simple way :-)

There is also a question whether this shoud be `b:qflisttype` or
`w:qflisttype`. w:quickfix_title is attached to the window.

>
> Best regards,
> Hirohito Higashi (a.k.a h_east)
>

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[h_east]

Hi Mr.Emotionless precise machine!

2016-4-10(Sun) 1:16:31 UTC+9 ZyX:

Huh? Is this your humor?
It's not so much fun.

Thanks.

[Nikolay Aleksandrovich Pavlov]

It is not only a humor. Your “two-line patch” is missing tests and
documentation and thus can be included in neither Vim nor Neovim. And
with them it will no longer be two-line.

[h_east]

2016-4-10(Sun) 2:18:18 UTC+9 ZyX:

> with them it will no longer be two-line.]

"Core part of" patch is two-lines.
Does not matter.