Oops, remove more error_stack stuff.

This should be the last of it.

core/ui.py

@@ -135,21 +135,6 @@ def PrettyPrintError(parse_error, arena, f=sys.stderr):
  print(parse_error.UserErrorString(), file=f)


def PrintErrorStack(error_stack, arena, f=sys.stderr):
  """
  NOTE:
  - Parse errors always occur within a single arena.  Actually NO, you want to
    show the 'source' stack trace like Python shows the import stack trace.

  - Runtime errors may span arenas (e.g. the function stack).
  """
  # - parse errors happen at runtime because of 'source'
  #   - should there be a distinction then?
  for err in error_stack:
    PrettyPrintError(err, arena, f=f)
    print('---', file=f)


def PrintAst(nodes, opts):
  if len(nodes) == 1:
    node = nodes[0]

osh/bool_parse.py

@@ -60,8 +60,6 @@ def __init__(self, w_parser):
    self.op_id = Id.Undefined_Tok
    self.b_kind = Kind.Undefined

    self.error_stack = []

  def _NextOne(self, lex_mode=lex_mode_e.DBRACKET):
    n = len(self.words)
    if n == 2:

osh/cmd_parse.py

@@ -272,7 +272,6 @@ def Reset(self):

    Called by the interactive loop.
    """
    self.error_stack = []
    self.completion_stack = []

    # Cursor state set by _Peek()
@@ -283,6 +282,9 @@ def Reset(self):

    self.pending_here_docs = []

  def Error(self):
    return 'TODO: for completion'

  def ResetInputObjects(self):
    """Reset the internal state of our inputs.

@@ -292,9 +294,6 @@ def ResetInputObjects(self):
    self.lexer.ResetInputObjects()
    self.line_reader.Reset()

  def Error(self):
    return self.error_stack

  def GetCompletionState(self):
    return self.completion_stack