use call_signature_escape instead of the old function_definition_escape, to be compatible with jedi

plugin/jedi.vim

@@ -32,7 +32,7 @@ let s:settings = {
     \ 'popup_on_dot': 1,
     \ 'pydoc': "'K'",
     \ 'show_function_definition': 1,
-    \ 'function_definition_escape': "'≡'",
+    \ 'call_signature_escape': "'≡'",
     \ 'auto_close_doc': 1,
     \ 'popup_select_first': 1,
     \ 'quickfix_window_height': 10

plugin/jedi_vim.py

@@ -185,7 +185,7 @@ def show_pydoc():
 
 def clear_call_signatures():
     cursor = vim.current.window.cursor
-    e = vim.eval('g:jedi#function_definition_escape')
+    e = vim.eval('g:jedi#call_signature_escape')
     regex = r'%sjedi=([0-9]+), ([^%s]*)%s.*%sjedi%s'.replace('%s', e)
     for i, line in enumerate(vim.current.buffer):
         match = re.search(r'%s' % regex, line)
@@ -238,7 +238,7 @@ def show_call_signatures(call_def=None, completion_lines=0):
 
         # Need to decode it with utf8, because vim returns always a python 2
         # string even if it is unicode.
-        e = vim.eval('g:jedi#function_definition_escape')
+        e = vim.eval('g:jedi#call_signature_escape')
         if hasattr(e, 'decode'):
             e = e.decode('UTF-8')
         # replace line before with cursor