Fixing a serious issue where all files open with vim were renamed whe…

…n g:pad_dir isn't properly set.

plugin/padlib/vim_globals.py

@@ -7,9 +7,13 @@ def set_vim_globals():
 	""" Sets global vim preferences and commands.
 	"""
 	# To update the date when files are modified
-	vim.command('execute "au! BufEnter" printf("%s*", g:pad_dir) ":let b:pad_modified = 0"')
-	vim.command('execute "au! BufWritePre" printf("%s*", g:pad_dir) ":let b:pad_modified = eval(&modified)"')
-	vim.command('execute "au! BufLeave" printf("%s*", g:pad_dir) ":call pad#UpdatePad()"')
+	if get_save_dir() == "":
+		vim.command('let tmp = confirm("IMPORTANT:\n'\
+				'Please set g:pad_dir to a valid path in your vimrc.", "OK", 1, "Error")')
+	else:
+		vim.command('execute "au! BufEnter" printf("%s*", g:pad_dir) ":let b:pad_modified = 0"')
+		vim.command('execute "au! BufWritePre" printf("%s*", g:pad_dir) ":let b:pad_modified = eval(&modified)"')
+		vim.command('execute "au! BufLeave" printf("%s*", g:pad_dir) ":call pad#UpdatePad()"')
 
 	# vim-pad pollutes the MRU.vim list quite a lot, if let alone.
 	# This should fix that.