Add build dir to latexmkrc, add <TAB> for coc autocompletion selection

dotfiles/latexmkrc

@@ -8,3 +8,5 @@ sub run_makeglossaries {
 push @generated_exts, 'glo', 'gls', 'glg';
 push @generated_exts, 'acn', 'acr', 'alg';
 $clean_ext .= ' %R.ist %R.xdy';
+
+$out_dir='build';

dotfiles/vim/vimrc

@@ -69,6 +69,14 @@ Plug 'lervag/vimtex'
 call plug#end()
 " }}}
 " PLUGIN OPTIONS {{{
+function! s:check_back_space() abort
+    let col = col('.') - 1
+    return !col || getline('.')[col - 1] =~ '\s'
+endfunction
+inoremap <silent><expr> <TAB>
+                \ pumvisible() ? "\<C-n>" :
+                \ <SID>check_back_space() ? "\<TAB>" :
+                \ coc#refresh()
 let g:ale_python_mypy_options = '--strict --strict-optional'
 
 let g:pymode_options_max_line_length = 90