Fix autoformat caused errors

init.vim

@@ -61,7 +61,7 @@ let g:ale_sign_warning="⚠"
 " Enable warnings about trailing whitespace for all files.
 let b:ale_warn_about_trailing_whitespace=1
 
-nmap <leader>e: ALEDetail <cr>
+nmap <leader>e: ALEDetail<CR>
 
 " ALE colors
 highlight ALEWarning ctermbg=Yellow
@@ -70,8 +70,8 @@ highlight ALEError ctermbg=DarkRed
 highlight ALEError ctermfg=White
 
 " Use TAB to switch between buffers
-noremap < tab > : bn < CR >
-noremap < S-tab > : bp < CR >
+noremap <tab> :bn<CR>
+noremap <S-tab> :bp<CR>
 
 " Highlight trailing whitespace (darker red) and remove all with Ctrl+k
 highlight WhitespaceEOL ctermbg=red guibg=#ab0d0d
@@ -100,10 +100,11 @@ let g:gitgutter_sign_modified_removed='--'
 let g:gitgutter_map_keys=0
 
 " Toggles on different plugins/modes
-noremap  <F1> : ToggleMouse <CR>
-inoremap <F1> <Esc>: ToggleMouse <CR> a
-nmap <F3>: set nonumber!<CR>
-nmap <F5>: NERDTreeToggle <CR>
+noremap  <F1> :ToggleMouse<CR>
+inoremap <F1> <Esc>:ToggleMouse<CR>a
+nmap <F3> :set nonumber!<CR>
+nmap <F4> :GitGutterBufferToggle<CR>
+nmap <F5> :NERDTreeToggle<CR>
 set pastetoggle=<F2>
 
 " Maintain undo history between sessions