Update README.md

README.md

@@ -145,5 +145,6 @@ Flags:
 Use "yq [command] --help" for more information about a command.
 ```
 
-## Known Issues
+## Known Issues / Missing Features
 - `yq` attempts to preserve comment positions and whitespace as much as possible, but it does not handle all scenarios (see https://github.com/go-yaml/yaml/tree/v3 for details)
+- You cannot (yet) select multiple paths/keys from the yaml to be printed out (https://github.com/mikefarah/yq/issues/287)

cmd/merge_test.go

@@ -339,6 +339,19 @@ func TestMergeOverwriteArraysCmd(t *testing.T) {
 	test.AssertResult(t, expectedOutput, result.Output)
 }
 
+func TestMergeUpdateArraysCmd(t *testing.T) {
+	cmd := getRootCommand()
+	result := test.RunCmd(cmd, "merge -x --arrays=update ../examples/sample_array.yaml ../examples/sample_array_2.yaml")
+	if result.Error != nil {
+		t.Error(result.Error)
+	}
+	expectedOutput := `- 4
+- 5
+- 3
+`
+	test.AssertResult(t, expectedOutput, result.Output)
+}
+
 func TestMergeCmd_Multi(t *testing.T) {
 	cmd := getRootCommand()
 	result := test.RunCmd(cmd, "merge -d1 ../examples/multiple_docs_small.yaml ../examples/data1.yaml")

cmd/read_test.go

@@ -617,6 +617,44 @@ pointer: *value-pointer`
 	test.AssertResult(t, expectedOutput, result.Output)
 }
 
+func TestReadMergeAnchorsExplodeMissingCmd(t *testing.T) {
+	content := `a:
+  <<: &anchor
+  c: d
+  e: f
+`
+	filename := test.WriteTempYamlFile(content)
+	defer test.RemoveTempYamlFile(filename)
+
+	cmd := getRootCommand()
+	result := test.RunCmd(cmd, fmt.Sprintf("read -X %s", filename))
+	if result.Error != nil {
+		t.Error(result.Error)
+	}
+	expectedOutput := `a:
+  c: d
+  e: f
+`
+	test.AssertResult(t, expectedOutput, result.Output)
+}
+
+func TestReadMergeAnchorsExplodeKeyCmd(t *testing.T) {
+	content := `name: &nameField Mike
+*nameField: Great Guy`
+	filename := test.WriteTempYamlFile(content)
+	defer test.RemoveTempYamlFile(filename)
+
+	cmd := getRootCommand()
+	result := test.RunCmd(cmd, fmt.Sprintf("read -X %s", filename))
+	if result.Error != nil {
+		t.Error(result.Error)
+	}
+	expectedOutput := `name: Mike
+Mike: Great Guy
+`
+	test.AssertResult(t, expectedOutput, result.Output)
+}
+
 func TestReadMergeAnchorsExplodeSimpleArrayCmd(t *testing.T) {
 	content := `- things`
 	filename := test.WriteTempYamlFile(content)

cmd/root.go

@@ -22,6 +22,7 @@ func New() *cobra.Command {
 			return nil
 		},
 		PersistentPreRun: func(cmd *cobra.Command, args []string) {
+			cmd.SetOut(cmd.OutOrStdout())
 			var format = logging.MustStringFormatter(
 				`%{color}%{time:15:04:05} %{shortfunc} [%{level:.4s}]%{color:reset} %{message}`,
 			)

cmd/utils.go

@@ -163,6 +163,9 @@ func setIfNotThere(node *yaml.Node, key string, value *yaml.Node) {
 }
 
 func applyAlias(node *yaml.Node, alias *yaml.Node) {
+	if alias == nil {
+		return
+	}
 	for index := 0; index < len(alias.Content); index = index + 2 {
 		keyNode := alias.Content[index]
 		log.Debugf("applying alias key %v", keyNode.Value)
@@ -185,12 +188,14 @@ func explodeNode(node *yaml.Node) error {
 		return nil
 	case yaml.AliasNode:
 		log.Debugf("its an alias!")
-		node.Kind = node.Alias.Kind
-		node.Style = node.Alias.Style
-		node.Tag = node.Alias.Tag
-		node.Content = node.Alias.Content
-		node.Value = node.Alias.Value
-		node.Alias = nil
+		if node.Alias != nil {
+			node.Kind = node.Alias.Kind
+			node.Style = node.Alias.Style
+			node.Tag = node.Alias.Tag
+			node.Content = node.Alias.Content
+			node.Value = node.Alias.Value
+			node.Alias = nil
+		}
 		return nil
 	case yaml.MappingNode:
 		for index := 0; index < len(node.Content); index = index + 2 {
@@ -202,6 +207,10 @@ func explodeNode(node *yaml.Node) error {
 				if errorInContent != nil {
 					return errorInContent
 				}
+				errorInContent = explodeNode(keyNode)
+				if errorInContent != nil {
+					return errorInContent
+				}
 			} else {
 				if valueNode.Kind == yaml.SequenceNode {
 					log.Debugf("an alias merge list!")

cmd/version.go

@@ -11,7 +11,7 @@ var (
 	GitDescribe string
 
 	// Version is main version number that is being run at the moment.
-	Version = "3.3.4"
+	Version = "3.4.0"
 
 	// VersionPrerelease is a pre-release marker for the version. If this is "" (empty string)
 	// then it means that it is a final release. Otherwise, this is a pre-release

snap/snapcraft.yaml

@@ -1,5 +1,5 @@
 name: yq
-version: '3.3.4'
+version: '3.4.0'
 summary: A lightweight and portable command-line YAML processor
 description: |
   The aim of the project is to be the jq or sed of yaml files.