How do I keep custom cursor reset function from interfering with vim-template?

Question

I have an autocommand function in my .vimrc that resets the cursor to where it was before I last closed the file. This function looks like this:

function! ResCur()
  if line("'\"") <= line("$")
    normal! g`"      
    return 1
  endif
endfunction                                                             
autocmd BufWinEnter * call ResCur()

I started using vim-template which recognizes a %HERE% variable in the templates that sets the cursor location. My custom function overrides this capability. Is there a way to change my autocommand to only reset the cursor when a template is not loaded so the %HERE% variable still works when a template is loaded? If part of the solution involves using a different template plugin, I would be happy to hear that as well.

Answer 1

Since this should only work for existing files, you'll want to use BufRead instead of BufWinEnter. vim-template won't trigger BufRead.

If you really need BufWinEnter to be used to process modelines before calling your function, you can use BufRead to set a buffer variable:

autocmd BufRead * let b:not_new = 1

And check if the variable exists before moving the cursor.

Answer 2

Looking at the vim-template source, it checks for the existence of %HERE% when jumping, you could do the same:

function! ResCur()
  if search("%HERE%", "n")
    return
  endif

  if line("'\"") <= line("$")
    normal! g`"      
    return 1
  endif
endfunction                                                             
autocmd BufWinEnter * call ResCur()

The n flag means do not move the cursor on search and the function return the line number, you can check its existence before moving.

This should be fine (I've not tested though, as I don't have the plugin installed).