refactor: hide erorr for languages

resolves #400

docs/docs/segment-dotnet.md

@@ -27,6 +27,7 @@ Display the currently active .NET SDK version.
 
 - display_version: `boolean` - display the active version or not; useful if all you need is an icon indicating `dotnet`
   is present - defaults to `true`
+- display_error: `boolean` - show the error context when failing to retrieve the version information - defaults to `true`
 - missing_command_text: `string` - text to display when the command is missing - defaults to empty
 - display_mode: `string` - determines when the segment is displayed
   - `always`: the segment is always displayed

docs/docs/segment-golang.md

@@ -26,6 +26,7 @@ Display the currently active golang version.
 ## Properties
 
 - display_version: `boolean` - display the golang version - defaults to `true`
+- display_error: `boolean` - show the error context when failing to retrieve the version information - defaults to `true`
 - missing_command_text: `string` - text to display when the command is missing - defaults to empty
 - display_mode: `string` - determines when the segment is displayed
   - `always`: the segment is always displayed

docs/docs/segment-julia.md

@@ -26,6 +26,7 @@ Display the currently active julia version.
 ## Properties
 
 - display_version: `boolean` - display the julia version - defaults to `true`
+- display_error: `boolean` - show the error context when failing to retrieve the version information - defaults to `true`
 - missing_command_text: `string` - text to display when the command is missing - defaults to empty
 - display_mode: `string` - determines when the segment is displayed
   - `always`: the segment is always displayed

docs/docs/segment-node.md

@@ -26,6 +26,7 @@ Display the currently active node version.
 ## Properties
 
 - display_version: `boolean` - display the node version - defaults to `true`
+- display_error: `boolean` - show the error context when failing to retrieve the version information - defaults to `true`
 - missing_command_text: `string` - text to display when the command is missing - defaults to empty
 - display_mode: `string` - determines when the segment is displayed
   - `always`: The segment is always displayed

docs/docs/segment-python.md

@@ -30,6 +30,7 @@ Supports conda, virtualenv and pyenv.
 - display_default_env: `boolean` - show the name of the virtualenv when it's default (`system`, `base`)
 or not - defaults to `true`
 - display_version: `boolean` - display the python version - defaults to `true`
+- display_error: `boolean` - show the error context when failing to retrieve the version information - defaults to `true`
 - missing_command_text: `string` - text to display when the command is missing - defaults to empty
 - display_mode: `string` - determines when the segment is displayed
   - `always`: the segment is always displayed

docs/docs/segment-ruby.md

@@ -26,6 +26,7 @@ Display the currently active ruby version.
 ## Properties
 
 - display_version: `boolean` - display the ruby version - defaults to `true`
+- display_error: `boolean` - show the error context when failing to retrieve the version information - defaults to `true`
 - missing_command_text: `string` - text to display when the command is missing - defaults to empty
 - display_mode: `string` - determines when the segment is displayed
   - `always`: the segment is always displayed

src/segment_language.go

@@ -98,9 +98,13 @@ func (l *language) string() string {
 	}
 
 	err := l.setVersion()
-	if err != nil {
+	displayError := l.props.getBool(DisplayError, true)
+	if err != nil && displayError {
 		return err.Error()
 	}
+	if err != nil {
+		return ""
+	}
 
 	if l.props.getBool(EnableHyperlink, false) {
 		return l.activeCommand.buildVersionURL(l.versionURLTemplate)

src/segment_language_test.go

@@ -261,6 +261,24 @@ func TestLanguageEnabledMissingCommandCustomText(t *testing.T) {
 	assert.Equal(t, expected, lang.string(), "unicorn is available and uni and corn files are found")
 }
 
+func TestLanguageEnabledMissingCommandCustomTextHideError(t *testing.T) {
+	props := map[Property]interface{}{
+		MissingCommandText: "missing",
+		DisplayError:       false,
+	}
+	args := &languageArgs{
+		commands:          []*cmd{},
+		extensions:        []string{uni, corn},
+		enabledExtensions: []string{uni, corn},
+		enabledCommands:   []string{"unicorn"},
+		version:           universion,
+		properties:        props,
+	}
+	lang := bootStrapLanguageTest(args)
+	assert.True(t, lang.enabled())
+	assert.Equal(t, "", lang.string())
+}
+
 func TestLanguageEnabledCommandExitCode(t *testing.T) {
 	expected := 200
 	args := &languageArgs{