Add :FixTabs command to vim

config/nvim/includes/bindings.vim

@@ -41,15 +41,15 @@ nnoremap <F12> :ALEFix<CR>
 " NOTE: Use command ':verbose imap <tab>' to make sure tab is not mapped by
 " other plugin before putting this into your config.
 inoremap <silent><expr> <TAB>
-      \ coc#pum#visible() ? coc#pum#next(1) :
-      \ CheckBackspace() ? "\<Tab>" :
-      \ coc#refresh()
+    \ coc#pum#visible() ? coc#pum#next(1) :
+    \ CheckBackspace() ? "\<Tab>" :
+    \ coc#refresh()
 inoremap <expr><S-TAB> coc#pum#visible() ? coc#pum#prev(1) : "\<C-h>"
 
 " Make <CR> to accept selected completion item or notify coc.nvim to format
 " <C-g>u breaks current undo, please make your own choice.
 inoremap <silent><expr> <CR> coc#pum#visible() ? coc#pum#confirm()
-                              \: "\<C-g>u\<CR>\<c-r>=coc#on_enter()\<CR>"
+    \: "\<C-g>u\<CR>\<c-r>=coc#on_enter()\<CR>"
 
 " Break undo chain is <C-g>u
 "inoremap <expr> <CR> pumvisible() ? "\<C-y>" : "\<C-g>u\<CR>"
@@ -129,3 +129,6 @@ nmap <silent> <leader>T :TestFile<CR>
 nnoremap <leader>gd :Gvdiffsplit!<CR>
 nnoremap gdh :diffget //2<CR>
 nnoremap gdl :diffget //3<CR>
+
+" Create a custom command to fix indentation, convert tabs to spaces, and set tab settings
+command! FixTabs execute 'set tabstop=4 shiftwidth=4 expandtab' | execute 'normal! gg=G' | retab