function to check for semicolon when using A

vimrc

@@ -161,6 +161,8 @@ nnoremap <leader>ry diw"0P
 
 inoremap jk <esc>
 
+nnoremap A :call Checksemicolon()<CR>;
+
 nnoremap <leader>co :!clear; 
 nnoremap <leader>gs :!clear; git status<CR>
 nnoremap <leader>gd :!clear; git diff<CR>
@@ -354,6 +356,15 @@ augroup END
 
 " #functions
 
+function! Checksemicolon()
+  :normal $
+  if getline('.')[col('.')-1] == ';'
+    :startinsert
+  else
+    :startinsert!
+  endif
+endfunction
+
 " get name of syntax item
 function! SyntaxItem()
   return synIDattr(synID(line('.'),col('.'),1),'name') . ' -> ' . synIDattr(synIDtrans(synID(line('.'),col('.'),1)), 'name' )