[PATCH v2 1/6] patman: Fix updating argument defaults from settings

[Douglas Anderson]

Ever since commit 4600767d294d ("patman: Refactor how the default
subcommand works"), when I use patman on the Linux tree I get grumbles
about unknown tags. This is because the Linux default making
process_tags be False wasn't working anymore.

It appears that the comment claiming that the defaults propagates
through all subparsers no longer works for some reason.

We're already looking at all the subparsers anyway. Let's just update
each one.

Fixes: 4600767d294d ("patman: Refactor how the default subcommand works")
Signed-off-by: Douglas Anderson <dianders at chromium.org>
Tested-by: Brian Norris <briannorris at chromium.org>
Reviewed-by: Brian Norris <briannorris at chromium.org>
---

(no changes since v1)

 tools/patman/settings.py | 41 +++++++++++++++++++++-------------------
 1 file changed, 22 insertions(+), 19 deletions(-)

diff --git a/tools/patman/settings.py b/tools/patman/settings.py
index 7c2b5c196c06..5eefe3d1f55e 100644
--- a/tools/patman/settings.py
+++ b/tools/patman/settings.py
@@ -244,28 +244,31 @@ def _UpdateDefaults(main_parser, config):
                   if isinstance(action, argparse._SubParsersAction)
                   for _, subparser in action.choices.items()]
 
+    unknown_settings = set(name for name, val in config.items('settings'))
+
     # Collect the defaults from each parser
-    defaults = {}
     for parser in parsers:
         pdefs = parser.parse_known_args()[0]
-        defaults.update(vars(pdefs))
-
-    # Go through the settings and collect defaults
-    for name, val in config.items('settings'):
-        if name in defaults:
-            default_val = defaults[name]
-            if isinstance(default_val, bool):
-                val = config.getboolean('settings', name)
-            elif isinstance(default_val, int):
-                val = config.getint('settings', name)
-            elif isinstance(default_val, str):
-                val = config.get('settings', name)
-            defaults[name] = val
-        else:
-            print("WARNING: Unknown setting %s" % name)
-
-    # Set all the defaults (this propagates through all subparsers)
-    main_parser.set_defaults(**defaults)
+        defaults = dict(vars(pdefs))
+
+        # Go through the settings and collect defaults
+        for name, val in config.items('settings'):
+            if name in defaults:
+                default_val = defaults[name]
+                if isinstance(default_val, bool):
+                    val = config.getboolean('settings', name)
+                elif isinstance(default_val, int):
+                    val = config.getint('settings', name)
+                elif isinstance(default_val, str):
+                    val = config.get('settings', name)
+                defaults[name] = val
+                unknown_settings.discard(name)
+
+        # Set all the defaults
+        parser.set_defaults(**defaults)
+
+    for name in sorted(unknown_settings):
+        print("WARNING: Unknown setting %s" % name)
 
 def _ReadAliasFile(fname):
     """Read in the U-Boot git alias file if it exists.
-- 
2.37.0.rc0.161.g10f37bed90-goog