Allow wildcard in rm_safe call (#16105)

Allow wildcard in rm_safe call

conans/model/settings.py

@@ -205,7 +205,7 @@ def serialize(self):
 
     def get_safe(self, name, default=None):
         """
-        Get the setting value avoiding
+        Get the setting value avoiding throwing if it does not exist or has been removed
         :param name:
         :param default:
         :return:
@@ -232,7 +232,10 @@ def rm_safe(self, name):
             except KeyError:
                 pass
         else:
-            self._data.pop(name, None)
+            if name == "*":
+                self.clear()
+            else:
+                self._data.pop(name, None)
 
     def copy(self):
         """ deepcopy, recursive

conans/test/unittests/model/settings_test.py

@@ -465,6 +465,17 @@ def test_rm_safe():
     assert "'settings.compiler.libcxx' doesn't exist for 'clang'" in str(e.value)
 
 
+def test_rm_safe_wildcard():
+    settings = Settings.loads(default_settings_yml)
+    settings.compiler = "gcc"
+    settings.compiler.version = "4.8"
+    settings.compiler.libcxx = "libstdc++"
+    settings.rm_safe("compiler.*")
+    assert settings.compiler == "gcc"
+    assert settings.get_safe("compiler.version") is None
+    assert settings.get_safe("compiler.libcxx") is None
+
+
 def test_settings_intel_cppstd_03():
     settings = Settings.loads(default_settings_yml)
     settings.compiler = "intel-cc"