[reformat] Migrate some long signatures to "tall" format

Author: Andy C

builtin/printf_osh.py

@@ -185,8 +185,14 @@ def __init__(
         # this object initialized in main()
         self.shell_start_time = time_.time()
 
-    def _Percent(self, pr, part, varargs, locs):
-        # type: (_PrintfState, printf_part.Percent, List[str], List[CompoundWord]) -> Optional[str]
+    def _Percent(
+            self,
+            pr,  # type: _PrintfState
+            part,  # type: printf_part.Percent
+            varargs,  # type: List[str]
+            locs,  # type: List[CompoundWord]
+    ):
+        # type: (...) -> Optional[str]
 
         num_args = len(varargs)
 

core/process.py

@@ -808,9 +808,16 @@ def Run(self):
 class SubProgramThunk(Thunk):
     """A subprogram that can be executed in another process."""
 
-    def __init__(self, cmd_ev, node, trap_state, multi_trace, inherit_errexit,
-                 inherit_errtrace):
-        # type: (CommandEvaluator, command_t, trap_osh.TrapState, dev.MultiTracer, bool, bool) -> None
+    def __init__(
+            self,
+            cmd_ev,  # type: CommandEvaluator
+            node,  # type: command_t
+            trap_state,  # type: trap_osh.TrapState
+            multi_trace,  # type: dev.MultiTracer
+            inherit_errexit,  # type: bool
+            inherit_errtrace,  # type: bool
+    ):
+        # type: (...) -> None
         self.cmd_ev = cmd_ev
         self.node = node
         self.trap_state = trap_state

core/state.py

@@ -1186,8 +1186,14 @@ def __exit__(self, type, value, traceback):
 class ctx_Eval(object):
     """Push temporary set of variables, $0, $1, $2, etc."""
 
-    def __init__(self, mem, dollar0, pos_args, vars):
-        # type: (Mem, Optional[str], Optional[List[str]], Optional[Dict[str, value_t]]) -> None
+    def __init__(
+            self,
+            mem,  # type: Mem
+            dollar0,  # type: Optional[str]
+            pos_args,  # type: Optional[List[str]]
+            vars,  # type: Optional[Dict[str, value_t]]
+    ):
+        # type: (...) -> None
         self.mem = mem
         self.dollar0 = dollar0
         self.pos_args = pos_args

frontend/typed_args.py

@@ -113,13 +113,16 @@ class Reader(object):
       ReaderForProc()
     """
 
-    def __init__(self,
-                 pos_args,
-                 named_args,
-                 block_arg,
-                 arg_list,
-                 is_bound=False):
-        # type: (List[value_t], Dict[str, value_t], Optional[value_t], ArgList, bool) -> None
+    def __init__(
+            self,
+            pos_args,  # type: List[value_t]
+            named_args,  # type: Dict[str, value_t]
+            block_arg,  # type: Optional[value_t]
+            arg_list,  # type: ArgList
+            is_bound=False,  # type: bool
+    ):
+        # type: (...) -> None
+
         self.pos_args = pos_args
         self.pos_consumed = 0
         # TODO: Add LHS of attribute expression to value.BoundFunc and pass