1 files changed, 113 insertions, 25 deletions

diff --git a/src/.vimrc b/src/.vimrc
index b8d4422..90c0681 100755
--- a/src/.vimrc
+++ b/src/.vimrc
@@ -1,20 +1,69 @@
-syntax on
 
-colorscheme ice
+" -------------------------------
+" Global options
+" -------------------------------
+
+"colorscheme ice
+colorscheme default
+
+" Colors
+if has('termguicolors')
+  set termguicolors
+endif
+
+" Cursor can rest beyond the last character
+set virtualedit=onemore
 
-" Your usual config below
+" Highlight
+set hlsearch
+
+" Options
+syntax on
 set number
-set expandtab
-set shiftwidth=4
-set tabstop=4
-set softtabstop=4
+set tabstop=8
+set shiftwidth=8
+set softtabstop=8
+set noexpandtab
 set autoindent
 set smartindent
 set scrolloff=999
+set relativenumber
 set mouse=a
 
-""""""""""""""""""""""""""""""""""""""""""
-" Statubar
+
+" Line numbers
+hi LineNr       ctermfg=7 ctermbg=NONE guifg=#505050 guibg=NONE
+hi CursorLineNr ctermfg=7 ctermbg=NONE guifg=#505050 guibg=NONE
+
+
+" -------------------------------
+" Toggle between default and kernel-style settings
+" -------------------------------
+
+let g:vim_kernel_mode = 1  " 0 = personal, 1 = kernel
+
+function! ToggleListStyle()
+    if g:vim_kernel_mode
+        " Kernel style settings
+        set list               " show tabs, trailing spaces, eol
+        set listchars=tab:>-,trail:~,eol:$
+        let g:vim_list_mode = 1
+        echo "List mode"
+    else
+        " Restore your personal settings
+        set nolist
+        set listchars=
+        let g:vim_list_mode = 0
+        echo "No list mode"
+    endif
+    " toggle the mode for next call
+    let g:vim_kernel_mode = !g:vim_kernel_mode
+endfunction
+
+
+" -------------------------------
+" Statusbar
+" -------------------------------
 
 function! VisualModeLineCount()
   if mode() =~# 'v'
@@ -37,14 +86,19 @@ function! ReadOnlyFlag()
   return ''                 " Empty if not modified
 endfunction
 
+
+" Function to display current column / total columns in current line
+function! ColAndTotal()
+  return printf('%d/%d', col('.'), col('$'))
+endfunction
+
 " Full-width statusline
 set laststatus=2
-set statusline=
 
 " LEFT Side
 set statusline=
 set statusline+=%f                          " File name
-set statusline+=\ [%l:%c]                   " Line and column
+set statusline+=\ [%l:%{ColAndTotal()}]     " Line and column / total columns
 set statusline+=\ [%L/%p%%]                 " Total lines and percent
 set statusline+=%{VisualModeLineCount()}    " Selected lines in visual mode
 set statusline+=%{ModifiedFlag()}           " Custom modified flag
@@ -53,19 +107,11 @@ set statusline+=%{ModifiedFlag()}           " Custom modified flag
 set statusline+=%=
 
 " RIGHT side
-set statusline+=\ [%y]                " Filetype
+set statusline+=\ [%y]                      " Filetype
 set statusline+=%{ReadOnlyFlag()}
 
-""""""""""""""""""""""""""""""""""""""""""
-
 " Status bar transparent
 hi StatusLine ctermbg=0 cterm=NONE
-   
-" Cursor can rest beyond the last character
-set virtualedit=onemore
-
-" Highlight
-set hlsearch
 
 " Disable expandtab for make files
 autocmd FileType make setlocal noexpandtab
@@ -75,15 +121,61 @@ if has("clipboard")
   set clipboard=unnamedplus
 endif
 
+" ===============================
+" Kernel-style 80-column guide for C files
+" ===============================
+
+" Use ftplugin for C files only
+augroup c_kernel_style
+    autocmd!
+
+    " Trigger for C files
+    autocmd FileType c call s:kernel_c_setup()
+augroup END
+
+function! s:kernel_c_setup()
+    " Highlight the 80th column
+    setlocal colorcolumn=80
+
+    " Optional: show cursor position
+    setlocal ruler
+
+    " Optional: soft wrap for comments
+    setlocal textwidth=80
+    setlocal formatoptions+=t
+
+    " Optional: subtle color for colorcolumn (works in GUI or truecolor terminals)
+    hi ColorColumn ctermbg=236 guibg=#3a3a3a
+endfunction
+
+
+" -------------------------------
+" Keymaps
+" -------------------------------
+
 " F2: absolute numbers only
 nnoremap <F2> :set number!<CR>
 
 " F4: absolute numbers only
 nnoremap <F4> :set relativenumber!<CR>
 
-" Search highlight
+" F5: Search highlight
 nnoremap <F5> :nohlsearch<CR>
 
+" F6: to toggle kernel style
+nnoremap <F6> :call ToggleListStyle()<CR>
+
+" F7: remove all trailing line
+nnoremap <F7> :%s/\s\+$//e<CR>
+
+" F8 will run checkpatch.pl and populate quickfix list
+nnoremap <F8> :w<CR>:cexpr system('checkpatch.pl --no-tree --file ' . expand('%:p'))<CR>:cwindow<CR>
+
+" Quickfix navigation with Shift + > / Shift + <
+" Note: Vim sees these as > and < in normal mode
+nnoremap > :cnext<CR>
+nnoremap < :cprev<CR>
+
 if &term =~ 'tmux\|xterm\|konsole'
   " Map HOME key to move to beginning of line in normal mode
   noremap <Esc>[1~ 0
@@ -91,7 +183,3 @@ if &term =~ 'tmux\|xterm\|konsole'
   noremap <Esc>OH 0
 endif
 
-" Colors
-if has('termguicolors')
-  set termguicolors
-endif