Make 'typeset' a synonym for 'declare' for now.

core/cmd_exec.py

@@ -672,7 +672,8 @@ def _Dispatch(self, node, fork_external):
      if node.keyword == Id.Assign_Local:
        lookup_mode = scope.LocalOnly
        flags = ()
      elif node.keyword == Id.Assign_Declare:
      # typeset and declare are synonyms?  I see typeset -a a=() the most.
      elif node.keyword in (Id.Assign_Declare, Id.Assign_Typeset):
        # declare is like local, except it can also be used outside functions?
        lookup_mode = scope.LocalOnly
        # TODO: Respect flags.  -r and -x matter, but -a and -A might be

core/id_kind.py

@@ -366,7 +366,7 @@ def _AddKinds(spec):
  # "None" could either be a global variable or assignment to a local.
  # NOTE: We're not parsing export here.  Although it sets a global variable,
  # and has the same syntax, too many scripts use it in a dynamic fashion.
  spec.AddKind('Assign', ['Declare', 'Local', 'Readonly', 'None'])
  spec.AddKind('Assign', ['Declare', 'Typeset', 'Local', 'Readonly', 'None'])

  # Unlike bash, we parse control flow statically.  They're not
  # dynamically-resolved builtins.

osh/lex.py

@@ -187,6 +187,7 @@
# main compatibility with bash for the 'type' builtin.
_MORE_KEYWORDS = [
  C('declare',  Id.Assign_Declare),
  C('typeset',  Id.Assign_Typeset),
  C('local',    Id.Assign_Local),
  C('readonly', Id.Assign_Readonly),

osh/osh.asdl

@@ -14,6 +14,7 @@
-- * select block
-- * &> redirect both stdout and stderr
-- * 1>&2- to close redirect
-- * case fallthrough ;& and ;;&

-- Represented but Not Parsed:
-- * LeftIndex -- LHS of assignment