From 0e9a5e60588d262e0fcf5744eef39b071fad680a Mon Sep 17 00:00:00 2001
From: Mauricio Villegas <5780272+mauvilsa@users.noreply.github.com>
Date: Wed, 12 Nov 2025 19:10:22 -0500
Subject: [PATCH] Fix changing omegaconf_absolute_to_relative_paths not taking
 effect after parsing once

---
 CHANGELOG.rst                        |  2 ++
 jsonargparse_tests/test_omegaconf.py | 11 +++++++----
 2 files changed, 9 insertions(+), 4 deletions(-)

diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index 8abe128e..6dd3f808 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -29,6 +29,8 @@ Fixed
   (`#789 <https://github.com/omni-us/jsonargparse/pull/789>`__).
 - Misleading error message for invalid value for ``Literal`` strings (`#790
   <https://github.com/omni-us/jsonargparse/pull/790>`__).
+- Changing ``omegaconf_absolute_to_relative_paths`` not taking effect after
+  parsing once (`#805 <https://github.com/omni-us/jsonargparse/pull/805>`__).
 
 Changed
 ^^^^^^^
diff --git a/jsonargparse_tests/test_omegaconf.py b/jsonargparse_tests/test_omegaconf.py
index f2c32d61..b8c21588 100644
--- a/jsonargparse_tests/test_omegaconf.py
+++ b/jsonargparse_tests/test_omegaconf.py
@@ -18,7 +18,7 @@
 from jsonargparse_tests.conftest import get_parser_help, skip_if_omegaconf_unavailable
 
 if omegaconf_support:
-    from omegaconf import OmegaConf
+    from omegaconf import OmegaConf, errors
 
 
 @pytest.fixture(autouse=True)
@@ -66,9 +66,6 @@ def test_omegaconf_interpolation_in_subcommands(mode, parser, subparser):
     subparser.add_argument("--source", type=str)
     subparser.add_argument("--target", type=str)
 
-    if mode == "omegaconf+absolute":
-        set_parsing_settings(omegaconf_absolute_to_relative_paths=True)
-
     parser.parser_mode = mode.replace("absolute", "")
     subcommands = parser.add_subcommands()
     subcommands.add_subcommand("sub", subparser)
@@ -77,6 +74,12 @@ def test_omegaconf_interpolation_in_subcommands(mode, parser, subparser):
         "source": "hello",
         "target": "${.source}" if mode == "omegaconf+" else "${source}",
     }
+
+    if mode == "omegaconf+absolute":
+        with pytest.raises(errors.InterpolationKeyError):
+            parser.parse_args(["sub", f"--config={yaml_dump(config)}"])
+        set_parsing_settings(omegaconf_absolute_to_relative_paths=True)
+
     cfg = parser.parse_args(["sub", f"--config={yaml_dump(config)}"])
     assert cfg.sub.target == "hello"