VIM+ctags+omnicppcomplete - c++

Question

I am linux newbie, but I finally decided to try one, I recently installed openSUSE. On windows 7 I used Visual Studio for c/c++ programming. I tried to find any IDE under linux, tried KDevelop but didn't like it, so i decided to try to setup VIM to be my source code editor.
Firstly I needed to find some auto completion. I read some things about GCCSense and clang_complete but for now installing those things is a bit complicated for me, so I settled for omnicpp and ctags.
I downloaded omnicpp and put those files in ~/.vim folder, I installed ctags. My .vimrc looks like this:
set number
" --- OmniCppComplete ---
" -- required --
set nocp " non vi compatible mode
filetype plugin on " enable plugins
" -- optional --
" auto close options when exiting insert mode
autocmd InsertLeave * if pumvisible() == 0|pclose|endif
set completeopt=menu,menuone
" -- configs --
let OmniCpp_MayCompleteDot = 1 " autocomplete with .
let OmniCpp_MayCompleteArrow = 1 " autocomplete with ->
let OmniCpp_MayCompleteScope = 1 " autocomplete with ::
let OmniCpp_SelectFirstItem = 2 " select first item (but don't insert)
let OmniCpp_NamespaceSearch = 2 " search namespaces in this and included files
let OmniCpp_ShowPrototypeInAbbr = 1 " show function prototype (i.e. parameters) in popup window
" -- ctags --
" map F8 to generate ctags for current folder:
map <F8> :!/usr/bin/ctags -R --c++-kinds=+p --fields=+iaS --extra=+q .<CR>
" add current directory's generated tags file to available tags
set tags=./tags,tags,/home/andrzej/vim/commontags
So to try it I made simple .c file
struct str
{
int aaa;
};
int main()
{
str *wsk;
wsk->aaa=5;
return 0;
}
I press F8 when I am not in input mode, it should generate tag file in place when .c file is located (map :!/usr/bin/ctags -R --c++-kinds=+p --fields=+iaS --extra=+q .) but no such file is generated. What I am doing wrong?

Answer 1

Edit:
Neither vim nor gvim change the current directory for you by default. Therefore, commands will be executed in the current working directory of your environment. In short, if you ran:
cd / && vi ~/prog/c/file.c
you would have the same "problem" with vi that you're having in gvim. That's why I used absolute paths in the binding I showed in my comment. Using autochdir is a reasonable solution, if that's the behavior you're expecting.
Original:
The problem seems to be the + characters. I'd suggest placing your ctags arguments into ~/.ctags:
$ echo -e "--c++-kinds=+p\n--fields=+iaS\n--extras=+q" > ~/.ctags
$ cat ~/.ctags
--c++-kinds=+p
--fields=+iaS
--extra=+q
Then change your mapping to:
map <F8> :!/usr/bin/ctags -R<CR>
Otherwise, you can escape the '+' characters:
map <F8> :!/usr/bin/ctags -R --c\+\+-kinds=\+p --fields=\+iaS --extra=\+q .<CR>

Answer 2

Omni:
Anyone seen or referenced this?
https://llvm.org/svn/llvm-project/llvm/trunk/utils/vim/vimrc
Tags:
Shot from the hip (Read: untested and unverified) Try CD'ing to the current dir.
map <F8> :cd %:p:h <Bar> :!/usr/bin/ctags -R --c\+\+-kinds=\+p --fields=\+iaS --extra=\+q .<CR>

Answer 3

Ok, thanks for all your answers, I found where the source of the problem is. When I run VIM from terminal F8 works fine, when I type !pwd it shows the directory where my .c file is (ex. ~/prog/C), but when I use GvIM and I open the same .c file and type !pwd it shows ~/dokumenty, so I think the problem lies somewhere in VIM/GVIM. I wonder why GVIM doesen't recognize the folder, no matter what file I open?
---edit---
I added set autochdir to my .vimrc and now everything works fine, the problem is solved, but I would be grateful if someone could answer me, why everything was working when i run VIM from terminal(even when autochdir was turned off) but it didn't work for GVIM.