.vimrc

set nocompatible

set belloff=all
set ambw=double "Windows WSL has a broken terminal that starts vim in replace mode. See https://superuser.com/questions/1284561/why-is-vim-starting-in-replace-mode

"map F1 to toggle search highlighting on and off
map <F6> :set hlsearch!<CR>
imap <F6> <ESC>:set hlsearch!<CR>a

map <F2> :!ctags -R .<CR>

"map <F7> :set syntax=c<CR>
"imap <F7> <ESC>:set syntax=c<CR>a

map <F7> :syntax reset<CR>
imap <F7> <ESC>:syntax reset<CR>a

" delete trailing whitespace
map <F5> :%s/\s\+$//g<CR>
imap <F5> <ESC>:%s/\s\+$//g<CR>a
set pastetoggle=<F2>

map <F3> :cp<CR> 
map <F4> :cn<CR> 
nnoremap <F9>  :e %:p:s,.h$,.X123X,:s,.c$,.h,:s,.X123X$,.c,<CR>
map <F12> :colorscheme github<CR>
imap <F12> <ESC>:colorscheme github<CR>a

" Smart way to move between windows
map <C-j> <C-W>j
map <C-k> <C-W>k
map <C-h> <C-W>h
map <C-l> <C-W>l

" Diff resolution
map <C-,> :diffget LOCAL<CR>
map <C-.> :diffget REMOTE<CR>
imap <C-,> <ESC>:diffget LOCAL<CR>a
imap <C-.> <ESC>:diffget REMOTE<CR>a

" temporary
nnoremap <silent> ,p 0i[PRF] <ESC>
nnoremap <silent> ,r 0i[RW] <ESC>
nnoremap <silent> ,m 0i[MATLAB] <ESC>

" Enable 'in-column' up and down motion in INSERT mode on wrapped lines
imap <silent> <Up>   <C-o>gk
imap <silent> <Down> <C-o>gj

" Enable 'in-column' up and down motion on wrapped lines
map <silent> <Up>   gk
map <silent> <Down> gj

syntax on

" Cursor highlighting
set cursorline

" Folding
highlight Folded ctermbg=234 ctermfg=Gray

" Cursor
highlight CursorLine cterm=NONE ctermbg=234

" highlight active status line
highlight statusline ctermbg=22 ctermfg=16 cterm=NONE
highlight statuslinenc ctermbg=237 ctermfg=7 cterm=NONE

" split divide
highlight vertsplit ctermbg=237 ctermfg=237 cterm=NONE

" make the window title reflect the file being edited
set title
set titlestring=VIM:\ %F

set laststatus=2

set history=500		" keep 500 lines of command line history
set ruler		" show the cursor position all the time

" 4 characters for tabs, use spaces
set tabstop=4
set shiftwidth=4
set expandtab

" backspace should delete
set backspace=2

" Set backup location and enable
set backupdir=/home/matt/.vim/backup//,/tmp
set backup
set writebackup

" Set swap directory
set directory=/home/matt/.vim/swap//,/tmp

" Save undo history
set undofile
set undodir=/home/matt/.vim/undo//,/tmp
set undolevels=1000
set undoreload=10000

" filename tab complete
set wildmode=longest,list,full

" Set searching preferences
set incsearch		" do incremental searching
set ignorecase
set smartcase
set showmatch
set nohlsearch

" Detect files that have changed
set autoread
au FocusGained,BufEnter * :checktime
au CursorHold,CursorHoldI * checktime

set showcmd		" display incomplete commands
set comments=n:#,:%,fb:-,n:>nn:)
set comments+=b:\"
set esckeys
set fileformat=unix
set report=0
set shell=bash
set showmode
set nostartofline
set linebreak
set so=3
"set nospell
set foldenable
set foldmethod=indent
autocmd FileType c,cpp :set foldmethod=syntax
set foldlevel=0
set foldlevelstart=3
set foldnestmax=6
"#set termguicolors
set autochdir
set nowrap
set scrollopt+=hor

"set tags=tags;
set tags^=tags;
"set tags+=./.git/tags;.
let g:ctags_statusline=1
let generate_tags=1
"save/load fold state
"au BufWinLeave * mkview
"au BufWinEnter * silent loadview

set autoindent

cnoreabbrev <expr> W ((getcmdtype() is# ':' && getcmdline() is# 'W')?('w'):('W'))

" Filetype for markdown
au BufNewFile,BufRead *.md set ft=markdown

" Highlight trailing whitespace
autocmd Filetype c,cpp,markdown match Error /\s\+$/

" Don't expand tabs in makefiles
autocmd FileType make setlocal noexpandtab

"" Only do this part when compiled with support for autocommands.
if has("autocmd")

  " Enable file type detection.
  " Use the default filetype settings, so that mail gets 'tw' set to 72,
  " 'cindent' is on in C files, etc.
  " Also load indent files, to automatically do language-dependent indenting.
  filetype plugin indent on

  " Put these in an autocmd group, so that we can delete them easily.
  augroup vimrcEx
  au!

  " For all text files set 'textwidth' to 78 characters.
  autocmd FileType text setlocal textwidth=78

  " When editing a file, always jump to the last known cursor position.
  " Don't do it when the position is invalid or when inside an event handler
  " (happens when dropping a file on gvim).
  autocmd BufReadPost *
    \ if line("'\"") > 0 && line("'\"") <= line("$") |
    \   exe "normal g`\"" |
    \ endif

  augroup END

else

	set autoindent		" always set autoindenting on

endif " has("autocmd")

augroup filetypedetect
  au BufRead,BufNewFile *.cl set filetype=c
augroup END

augroup filetypedetect
  au BufRead,BufNewFile *.asm set filetype=hydra_asm
augroup END

" hide cursorline in non-active windows
augroup CursorLineOnlyInActiveWindow
  autocmd!
  autocmd VimEnter,WinEnter,BufWinEnter * setlocal cursorline
  autocmd WinLeave * setlocal nocursorline
augroup END  

" Highlight patterns that match where the cursor is
set updatetime=100
" highlight the word under cursor (CursorMoved is inperformant)
highlight WordUnderCursor cterm=underline gui=underline
autocmd CursorHold * call HighlightCursorWord()
function! HighlightCursorWord()
    " if hlsearch is active, don't overwrite it!
    let search = getreg('/')
    let cword = expand('<cword>')
    if match(cword, search) == -1
        exe printf('match WordUnderCursor /\V\<%s\>/', escape(cword, '/\'))
    endif
endfunction

function TurnOffCaps()
    let capsState = matchstr(system('xset -q'), '00: Caps Lock:\s\+\zs\(on\|off\)\ze')
    if capsState == 'on'
        silent! execute ':!xdotool key Caps_Lock'
    endif
endfunction

au InsertLeave * call TurnOffCaps()

"set colorscheme=parsec