Adhere to the schemas when loading the user’s config

spec/config-spec.coffee

@@ -699,6 +699,26 @@ describe "Config", ->
           expect(atom.config.get("foo.bar")).toBe 'baz'
           expect(atom.config.get("foo.bar", scope: ['.source.ruby'])).toBe 'more-specific'
 
+      describe "when the config file does not conform to the schema", ->
+        beforeEach ->
+          fs.writeFileSync atom.config.configFilePath, """
+            '*':
+              foo:
+                bar: 'omg'
+                int: 'baz'
+            '.source.ruby':
+              foo:
+                bar: 'scoped'
+                int: 'nope'
+          """
+
+        it "validates and does not load the incorrect values", ->
+          atom.config.loadUserConfig()
+          expect(atom.config.get("foo.int")).toBe 12
+          expect(atom.config.get("foo.bar")).toBe 'omg'
+          expect(atom.config.get("foo.int", scope: ['.source.ruby'])).toBe 12
+          expect(atom.config.get("foo.bar", scope: ['.source.ruby'])).toBe 'scoped'
+
       describe "when the config file contains valid cson", ->
         beforeEach ->
           fs.writeFileSync(atom.config.configFilePath, "foo: bar: 'baz'")

src/config.coffee

@@ -1032,8 +1032,19 @@ class Config
 
   resetUserScopedSettings: (newScopedSettings) ->
     source = @getUserConfigPath()
+    priority = @priorityForSource(source)
     @scopedSettingsStore.removePropertiesForSource(source)
-    @scopedSettingsStore.addProperties(source, newScopedSettings, priority: @priorityForSource(source))
+
+    for scopeSelector, settings of newScopedSettings
+      validatedSettings = {}
+      try
+        settings = withoutEmptyObjects(@makeValueConformToSchema(null, settings))
+        validatedSettings[scopeSelector] = settings
+      catch e
+        ;
+
+      @scopedSettingsStore.addProperties(source, validatedSettings, {priority}) if validatedSettings[scopeSelector]
+
     @emitChangeEvent()
 
   addScopedSettings: (source, selector, value, options) ->