Somewhat better handling of escaped '[...]' keys in yaml

headless-services/commons/commons-yaml/src/main/java/org/springframework/ide/vscode/commons/yaml/structure/YamlStructureParser.java

@@ -76,7 +76,7 @@ public class YamlStructureParser {
 	 * Pattern that matches a line starting with a 'simple key'
 	 */
 	public static final Pattern SIMPLE_KEY_LINE = Pattern.compile(
-			"^(\\w(\\.|\\w|-)*):( .*|$)");
+			"^((\\w(\\.|\\w|-)*)|(\\'(\\.|\\w|-|\\[|\\])*\\')):( .*|$)");
 	//TODO: the parrern above is too selective (e.g. in real yaml one can have
 	//spaces in simple keys and lots of other characters that this pattern does not
 	//allow. For now it is good enough because we are only interested in spring property

headless-services/commons/commons-yaml/src/test/java/org/springframework/ide/vscode/yaml/structure/YamlStructureParserTest.java

@@ -33,6 +33,39 @@ import org.springframework.ide.vscode.commons.yaml.structure.YamlStructureParser
 
 public class YamlStructureParserTest {
 
+	@Test public void escapedStringKey() throws Exception {
+		MockYamlEditor editor;
+		
+		editor = new MockYamlEditor(
+				"my:\n" +
+				"  map:\n"+
+				"    foobar:\n" +
+				"      name: jeff"
+		);
+		assertParseOneDoc(editor,
+				"DOC(0): ",
+				"  KEY(0): my:", 
+				"    KEY(2): map:", 
+				"      KEY(4): foobar:",
+				"        KEY(6): name: jeff"
+		);
+		
+		editor = new MockYamlEditor(
+				"my:\n" +
+				"  map:\n"+
+				"    '[foo.bar]':\n" +
+				"      name: jeff"
+		);
+		assertParseOneDoc(editor,
+				"DOC(0): ",
+				"  KEY(0): my:", 
+				"    KEY(2): map:", 
+				"      KEY(4): '[foo.bar]':",
+				"        KEY(6): name: jeff"
+		);
+		
+	}
+	
 	@Test public void ignoreLeadingYamlCruftBeforeLeadingDocumentSeparator() throws Exception {
 		String[] stuffToIgnore = {
 				"#comment",