fixup! gh-105013: Fix inspect.getsource with parenthesized multiline lambdas

Signed-off-by: Pablo Galindo <pablogsal@gmail.com>

Author: pablogsal

Lib/inspect.py

@@ -1243,8 +1243,13 @@ def getblock(lines):
  except (EndOfBlock, IndentationError):
  pass
  except SyntaxError as e:
- if "unmatched ')" not in e.msg:
+ if "unmatched" not in e.msg:
  raise e from None
+ _, *_token_info = _token
+ try:
+ blockfinder.tokeneater(tokenize.NEWLINE, *_token_info)
+ except (EndOfBlock, IndentationError):
+ pass
  return lines[:blockfinder.last]
 
 def getsourcelines(object):

Lib/test/inspect_fodder2.py

@@ -280,4 +280,9 @@ def complex_decorated(foo=0, bar=lambda: 0):
 
 # line 281
 post_line_parenthesized_lambda = (lambda: ()
-)
+)
+
+# line 285
+nested_lambda = (
+ lambda right: [].map(
+ lambda length: ()))

Lib/test/test_inspect.py

@@ -786,6 +786,10 @@ def test_post_line_parenthesized_lambda(self):
  # function.
  self.assertSourceEqual(mod2.post_line_parenthesized_lambda, 282, 283)
 
+ def test_nested_lambda(self):
+ # Test inspect.getsource with a nested lambda function.
+ self.assertSourceEqual(mod2.nested_lambda, 287, 288)
+
  def test_onelinefunc(self):
  # Test inspect.getsource with a regular one-line function.
  self.assertSourceEqual(mod2.onelinefunc, 37, 37)