My .vimrc file

.bashrc

export HISTCONTROL=ignoredups:erasedups
export HISTSIZE=-1  
export HISTFILESIZE=-1         
shopt -s histappend  

.mrxvtrc

Mrxvt.bottomTabbar: False
Mrxvt.geometry: 80x60
Mrxvt.xft: 1
Mrxvt.font: 10x20
Mrxvt.scrollBar: False
Mrxvt.scrollTtyKeypress: False
Mrxvt.saveLines: 65535
Mrxvt.showMenu: False
Mrxvt.hideButtons: true
Mrxvt.itabBackground: #101010
Mrxvt.tabBackground: #000000
Mrxvt.itabForeground: #909090
Mrxvt.tabForeground: #9a9a9a
Mrxvt.maxTabWidth: 12
Mrxvt.background:               #000000
Mrxvt.foreground:               #9a9a9a
Mrxvt.color0:                   #000000
Mrxvt.color1:                   #af0000
Mrxvt.color2:                   #00af00
Mrxvt.color3:                   #afaf00
Mrxvt.color4:                   #0000af
Mrxvt.color5:                   #af00af
Mrxvt.color6:                   #00afaf
Mrxvt.color7:                   #9a9a9a
Mrxvt.color8:                   #5f5f5f
Mrxvt.color9:                   #d70000
Mrxvt.color10:                  #00d700
Mrxvt.color11:                  #d7d700
Mrxvt.color12:                  #0000d7
Mrxvt.color13:                  #d700d7
Mrxvt.color14:                  #00d7d7
Mrxvt.color15:                  #d7d7d7

README

Install vim, ctags, cscope and Vundle on the system
before copying these 2 files. ycm_extra_conf.py goes in .vim/ directory.

Usage: ctags -R in the root directory of the project.

a.vim :A to switch
:AT open in new tab
:AV open in vsplit

ctags: ctrl+] to go to definition
ctrl+t to return

cscope ctrl+\s symbol
ctrl+\c who calls it
ctrl+\d what functions are called by the one under cursor

vimrc

"Vundle stuff
set nocompatible              " be iMproved, required
filetype off                  " required

" set the runtime path to include Vundle and initialize
set rtp+=~/.vim/bundle/Vundle.vim
call vundle#begin()
" alternatively, pass a path where Vundle should install plugins
"call vundle#begin('~/some/path/here')

" let Vundle manage Vundle, required
Plugin 'gmarik/Vundle.vim'
Plugin 'Valloric/YouCompleteMe'
Plugin 'a.vim'
Plugin 'scrooloose/nerdtree'
Plugin 'scrooloose/nerdcommenter'
Plugin 'kien/ctrlp.vim'

" All of your Plugins must be added before the following line
call vundle#end()            " required
filetype plugin indent on    " required


"youcompleteme setings
let g:ycm_global_ycm_extra_conf = "~/.vim/.ycm_extra_conf.py"
let g:ycm_confirm_extra_conf = 0
"Temporarily disable youcompleteme
"let g:loaded_youcompleteme = 1


"nerdcommenter settings
filetype plugin on


"nerdtree settings
"NerdTree open with ctrl - n
map <C-n> :NERDTreeToggle<CR>

"Close vim when the only window left is NerdTree
autocmd bufenter * if (winnr("$") == 1 && exists("b:NERDTreeType") && b:NERDTreeType == "primary") | q | endif


"General settings
set number
set autoindent
set smartindent
set tabstop=4
set softtabstop=4
set shiftwidth=4
set expandtab

"Case insensitive search
set ignorecase
set smartcase

"bash like tab completion
set wildmode=longest,list,full
set wildmenu
"Ctags tags file lookup
set tags=./tags;/

"More natural vim splits
set splitbelow
set splitright

"Move between splits faster using only Ctrl + hjkl
nnoremap <C-J> <C-W><C-J>
nnoremap <C-K> <C-W><C-K>
nnoremap <C-L> <C-W><C-L>
nnoremap <C-H> <C-W><C-H>

" Resize splits easily
"resize current buffer by +/- 5 
nnoremap <C-left> :vertical resize -5<cr>
nnoremap <C-down> :resize +5<cr>
nnoremap <C-up> :resize -5<cr>
nnoremap <C-right> :vertical resize +5<cr>


""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" CSCOPE settings for vim           
""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
"
" This file contains some boilerplate settings for vim's cscope interface,
" plus some keyboard mappings that I've found useful.
"
" USAGE: 
" -- vim 6:     Stick this file in your ~/.vim/plugin directory (or in a
"               'plugin' directory in some other directory that is in your
"               'runtimepath'.
"
" -- vim 5:     Stick this file somewhere and 'source cscope.vim' it from
"               your ~/.vimrc file (or cut and paste it into your .vimrc).
"
" NOTE: 
" These key maps use multiple keystrokes (2 or 3 keys).  If you find that vim
" keeps timing you out before you can complete them, try changing your timeout
" settings, as explained below.
"
" Happy cscoping,
"
" Jason Duell       jduell@alumni.princeton.edu     2002/3/7
""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""


" This tests to see if vim was configured with the '--enable-cscope' option
" when it was compiled.  If it wasn't, time to recompile vim... 
if has("cscope")

    """"""""""""" Standard cscope/vim boilerplate

    " use both cscope and ctag for 'ctrl-]', ':ta', and 'vim -t'
    set cscopetag

    " check cscope for definition of a symbol before checking ctags: set to 1
    " if you want the reverse search order.
    set csto=0

    " add any cscope database in current directory
    if filereadable("cscope.out")
        cs add cscope.out  
    " else add the database pointed to by environment variable 
    elseif $CSCOPE_DB != ""
        cs add $CSCOPE_DB
    endif

    " show msg when any other cscope db added
    set cscopeverbose  


    """"""""""""" My cscope/vim key mappings
    "
    " The following maps all invoke one of the following cscope search types:
    "
    "   's'   symbol: find all references to the token under cursor
    "   'g'   global: find global definition(s) of the token under cursor
    "   'c'   calls:  find all calls to the function name under cursor
    "   't'   text:   find all instances of the text under cursor
    "   'e'   egrep:  egrep search for the word under cursor
    "   'f'   file:   open the filename under cursor
    "   'i'   includes: find files that include the filename under cursor
    "   'd'   called: find functions that function under cursor calls
    "
    " Below are three sets of the maps: one set that just jumps to your
    " search result, one that splits the existing vim window horizontally and
    " diplays your search result in the new window, and one that does the same
    " thing, but does a vertical split instead (vim 6 only).
    "
    " I've used CTRL-\ and CTRL-@ as the starting keys for these maps, as it's
    " unlikely that you need their default mappings (CTRL-\'s default use is
    " as part of CTRL-\ CTRL-N typemap, which basically just does the same
    " thing as hitting 'escape': CTRL-@ doesn't seem to have any default use).
    " If you don't like using 'CTRL-@' or CTRL-\, , you can change some or all
    " of these maps to use other keys.  One likely candidate is 'CTRL-_'
    " (which also maps to CTRL-/, which is easier to type).  By default it is
    " used to switch between Hebrew and English keyboard mode.
    "
    " All of the maps involving the <cfile> macro use '^<cfile>$': this is so
    " that searches over '#include <time.h>" return only references to
    " 'time.h', and not 'sys/time.h', etc. (by default cscope will return all
    " files that contain 'time.h' as part of their name).


    " To do the first type of search, hit 'CTRL-\', followed by one of the
    " cscope search types above (s,g,c,t,e,f,i,d).  The result of your cscope
    " search will be displayed in the current window.  You can use CTRL-T to
    " go back to where you were before the search.  
    "

    nmap <C-\>s :cs find s <C-R>=expand("<cword>")<CR><CR>	
    nmap <C-\>g :cs find g <C-R>=expand("<cword>")<CR><CR>	
    nmap <C-\>c :cs find c <C-R>=expand("<cword>")<CR><CR>	
    nmap <C-\>t :cs find t <C-R>=expand("<cword>")<CR><CR>	
    nmap <C-\>e :cs find e <C-R>=expand("<cword>")<CR><CR>	
    nmap <C-\>f :cs find f <C-R>=expand("<cfile>")<CR><CR>	
    nmap <C-\>i :cs find i ^<C-R>=expand("<cfile>")<CR>$<CR>
    nmap <C-\>d :cs find d <C-R>=expand("<cword>")<CR><CR>	


    " Using 'CTRL-spacebar' (intepreted as CTRL-@ by vim) then a search type
    " makes the vim window split horizontally, with search result displayed in
    " the new window.
    "
    " (Note: earlier versions of vim may not have the :scs command, but it
    " can be simulated roughly via:
    "    nmap <C-@>s <C-W><C-S> :cs find s <C-R>=expand("<cword>")<CR><CR>	

    nmap <C-@>s :scs find s <C-R>=expand("<cword>")<CR><CR>	
    nmap <C-@>g :scs find g <C-R>=expand("<cword>")<CR><CR>	
    nmap <C-@>c :scs find c <C-R>=expand("<cword>")<CR><CR>	
    nmap <C-@>t :scs find t <C-R>=expand("<cword>")<CR><CR>	
    nmap <C-@>e :scs find e <C-R>=expand("<cword>")<CR><CR>	
    nmap <C-@>f :scs find f <C-R>=expand("<cfile>")<CR><CR>	
    nmap <C-@>i :scs find i ^<C-R>=expand("<cfile>")<CR>$<CR>	
    nmap <C-@>d :scs find d <C-R>=expand("<cword>")<CR><CR>	


    " Hitting CTRL-space *twice* before the search type does a vertical 
    " split instead of a horizontal one (vim 6 and up only)
    "
    " (Note: you may wish to put a 'set splitright' in your .vimrc
    " if you prefer the new window on the right instead of the left

    nmap <C-@><C-@>s :vert scs find s <C-R>=expand("<cword>")<CR><CR>
    nmap <C-@><C-@>g :vert scs find g <C-R>=expand("<cword>")<CR><CR>
    nmap <C-@><C-@>c :vert scs find c <C-R>=expand("<cword>")<CR><CR>
    nmap <C-@><C-@>t :vert scs find t <C-R>=expand("<cword>")<CR><CR>
    nmap <C-@><C-@>e :vert scs find e <C-R>=expand("<cword>")<CR><CR>
    nmap <C-@><C-@>f :vert scs find f <C-R>=expand("<cfile>")<CR><CR>	
    nmap <C-@><C-@>i :vert scs find i ^<C-R>=expand("<cfile>")<CR>$<CR>	
    nmap <C-@><C-@>d :vert scs find d <C-R>=expand("<cword>")<CR><CR>


    """"""""""""" key map timeouts
    "
    " By default Vim will only wait 1 second for each keystroke in a mapping.
    " You may find that too short with the above typemaps.  If so, you should
    " either turn off mapping timeouts via 'notimeout'.
    "
    "set notimeout 
    "
    " Or, you can keep timeouts, by uncommenting the timeoutlen line below,
    " with your own personal favorite value (in milliseconds):
    "
    "set timeoutlen=4000
    "
    " Either way, since mapping timeout settings by default also set the
    " timeouts for multicharacter 'keys codes' (like <F1>), you should also
    " set ttimeout and ttimeoutlen: otherwise, you will experience strange
    " delays as vim waits for a keystroke after you hit ESC (it will be
    " waiting to see if the ESC is actually part of a key code like <F1>).
    "
    "set ttimeout 
    "
    " personally, I find a tenth of a second to work well for key code
    " timeouts. If you experience problems and have a slow terminal or network
    " connection, set it higher.  If you don't set ttimeoutlen, the value for
    " timeoutlent (default: 1000 = 1 second, which is sluggish) is used.
    "
    "set ttimeoutlen=100

endif

ycm_extra_conf.py

# Partially stolen from https://bitbucket.org/mblum/libgp/src/2537ea7329ef/.ycm_extra_conf.py
import os
import ycm_core

# These are the compilation flags that will be used in case there's no
# compilation database set (by default, one is not set).
# CHANGE THIS LIST OF FLAGS. YES, THIS IS THE DROID YOU HAVE BEEN LOOKING FOR.
flags = [
    '-Wall',
    '-Wextra',
    '-Werror',
    '-Wc++98-compat',
    '-Wno-long-long',
    '-Wno-variadic-macros',
    '-fexceptions',
    # THIS IS IMPORTANT! Without a "-std=<something>" flag, clang won't know which
    # language to use when compiling headers. So it will guess. Badly. So C++
    # headers will be compiled as C headers. You don't want that so ALWAYS specify
    # a "-std=<something>".
    # For a C project, you would set this to something like 'c99' instead of
    # 'c++11'.
    '-std=c++11',
    # ...and the same thing goes for the magic -x option which specifies the
    # language that the files to be compiled are written in. This is mostly
    # relevant for c++ headers.
    # For a C project, you would set this to 'c' instead of 'c++'.
    '-x', 'c++',
    # This path will only work on OS X, but extra paths that don't exist are not
    # harmful
    '-isystem', '/System/Library/Frameworks/Python.framework/Headers',
    '-isystem', '/usr/local/include',
    '-isystem', '/usr/local/include/eigen3',
    '-I', 'include'
    '-I.'
]

# Set this to the absolute path to the folder (NOT the file!) containing the
# compile_commands.json file to use that instead of 'flags'. See here for
# more details: http://clang.llvm.org/docs/JSONCompilationDatabase.html
#
# Most projects will NOT need to set this to anything; you can just change the
# 'flags' list of compilation flags. Notice that YCM itself uses that approach.
compilation_database_folder = ''

if compilation_database_folder:
  database = ycm_core.CompilationDatabase( compilation_database_folder )
else:
  database = None


def DirectoryOfThisScript():
  return os.path.dirname( os.path.abspath( __file__ ) )


def MakeRelativePathsInFlagsAbsolute( flags, working_directory ):
  if not working_directory:
    return list( flags )
  new_flags = []
  make_next_absolute = False
  path_flags = [ '-isystem', '-I', '-iquote', '--sysroot=' ]
  for flag in flags:
    new_flag = flag

    if make_next_absolute:
      make_next_absolute = False
      if not flag.startswith( '/' ):
        new_flag = os.path.join( working_directory, flag )

    for path_flag in path_flags:
      if flag == path_flag:
        make_next_absolute = True
        break

      if flag.startswith( path_flag ):
        path = flag[ len( path_flag ): ]
        new_flag = path_flag + os.path.join( working_directory, path )
        break

    if new_flag:
      new_flags.append( new_flag )
  return new_flags


def FlagsForFile( filename ):
  if database:
    # Bear in mind that compilation_info.compiler_flags_ does NOT return a
    # python list, but a "list-like" StringVec object
    compilation_info = database.GetCompilationInfoForFile( filename )
    final_flags = MakeRelativePathsInFlagsAbsolute(
      compilation_info.compiler_flags_,
      compilation_info.compiler_working_dir_ )
  else:
    relative_to = DirectoryOfThisScript()
    final_flags = MakeRelativePathsInFlagsAbsolute( flags, relative_to )

  return {
    'flags': final_flags,
    'do_cache': True
  }