Fix --print_shtab not adding file completer for _ActionConfigLoad (#562)

CHANGELOG.rst

@@ -21,6 +21,8 @@ Fixed
   (`#559 <https://github.com/omni-us/jsonargparse/pull/559>`__).
 - ``List`` type incorrectly using defaults from previous item (`#560
   <https://github.com/omni-us/jsonargparse/pull/560>`__).
+- ``--print_shtab`` not adding file completer for ``_ActionConfigLoad`` (`#562
+  <https://github.com/omni-us/jsonargparse/pull/562>`__).
 
 
 v4.32.0 (2024-07-19)

jsonargparse/_completions.py

@@ -12,7 +12,7 @@
 from subprocess import PIPE, Popen
 from typing import List, Union
 
-from ._actions import ActionConfigFile, _ActionHelpClassPath, remove_actions
+from ._actions import ActionConfigFile, _ActionConfigLoad, _ActionHelpClassPath, remove_actions
 from ._parameter_resolvers import get_signature_parameters
 from ._typehints import (
     ActionTypeHint,
@@ -142,7 +142,7 @@ def shtab_prepare_action(action, parser) -> None:
         return
 
     complete = None
-    if isinstance(action, ActionConfigFile):
+    if isinstance(action, (ActionConfigFile, _ActionConfigLoad)):
         complete = shtab.FILE
     elif isinstance(action, ActionTypeHint):
         typehint = action._typehint

jsonargparse_tests/test_shtab.py

@@ -194,6 +194,12 @@ def __init__(self, p1: int):
         pass
 
 
+def test_bash_class_config(parser):
+    parser.add_class_arguments(Base, "class")
+    shtab_script = get_shtab_script(parser, "bash")
+    assert "_class_COMPGEN=_shtab_compgen_files" in shtab_script
+
+
 class SubA(Base):
     def __init__(self, p1: int, p2: AXEnum):
         pass