nvim: Some minor cleanups, additions and refactor

Signed-off-by: Sanchayan Maity <maitysanchayan@gmail.com>

nvim/.config/nvim/after/ftplugin/c.vim

@@ -1,3 +1,9 @@
+" Create folds based on files syntax
+set foldmethod=syntax
+" Scanning included files when ^n is troublesome
+set complete-=i
+set path+=/usr/include/**
+
 nmap <LocalLeader>ct :NeomakeSh ctags -R .<CR>
 nmap <LocalLeader>cu :NeomakeSh cscope -bqR<CR>
 nmap <LocalLeader>cr :cs reset<CR>

nvim/.config/nvim/after/ftplugin/qf.vim

@@ -1,2 +1,7 @@
 noremap <silent><buffer> p :call quickui#tools#preview_quickfix()<CR>
 
+noremap <buffer> [- :colder<CR>
+noremap <buffer> ]+ :cnewer<CR>
+
+" Close QF window if it is last window
+autocmd WinEnter * if winnr('$') == 1 && &buftype == "quickfix" | q | endif

nvim/.config/nvim/init.vim

@@ -146,7 +146,6 @@ set splitright          " Vertical split to right of current.
 set nobackup            " no backup files
 set nowritebackup       " only in case you don't want a backup file while editing
 set noswapfile          " no swap files
-set foldmethod=syntax   " Create folds based on files syntax
 set nofoldenable        " Open folds by default
 set undofile            " Enable undo persistence across sessions
 set hidden
@@ -181,6 +180,7 @@ set autoread            " Autoload file if it changes on disk
 set termguicolors       " Enable colors for terminal
 set fileformat=unix
 set inccommand=split
+set switchbuf=useopen
 
 set clipboard^=unnamed,unnamedplus
 set backspace=indent,eol,start
@@ -202,8 +202,6 @@ cnoremap <Esc> <Nop>
 " Use Q to execute default register.
 nnoremap Q <Nop>
 
-" Bind vanilla buffer switching
-nnoremap <Leader>b   :b<SPACE>
 " For Fuzzy
 nnoremap <Leader>ff  :GFiles<CR>
 nnoremap <Leader>f?  :GFiles?<CR>
@@ -222,10 +220,10 @@ nnoremap <Leader>fo  :Locate<SPACE>
 nnoremap <Leader>fk  :Maps<CR>
 nnoremap <Leader>f/  :Rg<CR>
 nnoremap <Leader>fs  :exe ':Rg ' . expand('<cword>')<CR>
-imap <C-x><C-w> <plug>(fzf-complete-word)
-imap <C-x><C-p> <plug>(fzf-complete-path)
-imap <C-x><C-f> <plug>(fzf-complete-file)
-imap <C-x><C-l> <plug>(fzf-complete-line)
+imap <C-x><C-w> <Plug>(fzf-complete-word)
+imap <C-x><C-p> <Plug>(fzf-complete-path)
+imap <C-x><C-f> <Plug>(fzf-complete-file)
+imap <C-x><C-l> <Plug>(fzf-complete-line)
 " Save
 nnoremap <Leader>w <Esc>:w<CR>
 " Search and Replace
@@ -240,6 +238,9 @@ nnoremap [b :bprevious<CR>
 nnoremap ]b :bnext<CR>
 nnoremap [B :bfirst<CR>
 nnoremap ]B :blast<CR>
+nnoremap <Leader>b  :b<SPACE>
+nnoremap <Leader>bl :ls<CR>:b<SPACE>
+nnoremap <Leader>bd :bd<SPACE>
 " For floating terminal
 nnoremap se :FloatermNew<CR>
 nnoremap [s :FloatermPrev<CR>
@@ -389,16 +390,6 @@ augroup rainbow_lisp
   autocmd FileType lisp,clojure,scheme RainbowParentheses
 augroup END
 
-augroup quickfix
-  au!
-  " Close QF window if it is last window
-  au WinEnter * if winnr('$') == 1 && &buftype == "quickfix"|q|endif
-  " Existing bindings for QFGrep
-  " <Leader>g input pattern to do further filtering
-  " <Leader>v input pattern to do further inverted filtering
-  " <Leader>r restore the Quickfix/location list with original entries
-augroup END
-
 augroup terminal_job
   au!
   au TermOpen * startinsert
@@ -412,6 +403,10 @@ augroup END
 
 " --------------------------- Plugin settings --------------------------------
 " Use airline
+let g:airline#extensions#keymap#enabled = 0
+let g:airline#extensions#whitespace#enabled = 0
+let g:airline#extensions#wordcount#enabled = 0
+let g:airline#extensions#term#enabled = 0
 let g:airline#extensions#tabline#enabled = 1
 let g:airline#extensions#tabline#fnamemod = ':t'
 let g:airline#extensions#tabline#left_sep = ' '
@@ -425,6 +420,7 @@ let g:airline_left_alt_sep = '|'
 let g:airline_right_sep = ' '
 let g:airline_right_alt_sep = '|'
 let g:airline_section_y = '%{winnr()}'
+let g:airline_highlighting_cache = 1
 
 " Let vim-gitgutter do its thing on large files
 let g:gitgutter_max_signs=1000