gherkin/java:Support unicode colon as separator.

gherkin/java/src/main/java/gherkin/GherkinLanguageConstants.java

@@ -1,10 +1,15 @@
 package gherkin;
 
+import java.util.regex.Pattern;
+
 public interface GherkinLanguageConstants {
     String TAG_PREFIX = "@";
     String COMMENT_PREFIX = "#";
     String TITLE_KEYWORD_SEPARATOR = ":";
+    Pattern TITLE_KEYWORD_SEPARATOR2 = Pattern.compile(":|：");
     String TABLE_CELL_SEPARATOR = "|";
     String DOCSTRING_SEPARATOR = "\"\"\"";
     String DOCSTRING_ALTERNATIVE_SEPARATOR = "```";
+
+
 }

gherkin/java/src/main/java/gherkin/GherkinLine.java

@@ -3,6 +3,7 @@
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Scanner;
+import java.util.regex.Matcher;
 
 import static gherkin.StringUtils.ltrim;
 import static gherkin.SymbolCounter.countSymbols;
@@ -56,10 +57,14 @@ public List<GherkinLineSpan> getTags() {
     @Override
     public boolean startsWithTitleKeyword(String text) {
         int textLength = text.length();
-        return trimmedLineText.length() > textLength &&
-                trimmedLineText.startsWith(text) &&
-                trimmedLineText.substring(textLength, textLength + GherkinLanguageConstants.TITLE_KEYWORD_SEPARATOR.length())
-                        .equals(GherkinLanguageConstants.TITLE_KEYWORD_SEPARATOR);
+        if (trimmedLineText.length() > textLength && trimmedLineText.startsWith(text)) {
+            String rest = trimmedLineText.substring(textLength);
+            Matcher matcher = GherkinLanguageConstants.TITLE_KEYWORD_SEPARATOR2.matcher(rest);
+            if(matcher.find() && matcher.start() == 0){
+                return  true;
+            }
+        }
+        return false;
         // TODO aslak: extract startsWithFrom method for clarity
     }
 

gherkin/java/testdata/good/i18n_zh-cn.feature

@@ -0,0 +1,5 @@
+#language: zh-CN
+功能：汉语解析
+
+  场景：冒号可以用在功能和场景中
+    * 冒号

gherkin/java/testdata/good/i18n_zh-cn.feature.ast.ndjson

@@ -0,0 +1,42 @@
+{
+  "document": {
+    "comments": [],
+    "feature": {
+      "children": [
+        {
+          "keyword": "场景",
+          "location": {
+            "column": 3,
+            "line": 4
+          },
+          "name": "冒号可以用在功能和场景中",
+          "steps": [
+            {
+              "keyword": "* ",
+              "location": {
+                "column": 5,
+                "line": 5
+              },
+              "text": "冒号",
+              "type": "Step"
+            }
+          ],
+          "tags": [],
+          "type": "Scenario"
+        }
+      ],
+      "keyword": "功能",
+      "language": "zh-CN",
+      "location": {
+        "column": 1,
+        "line": 2
+      },
+      "name": "汉语解析",
+      "tags": [],
+      "type": "Feature"
+    },
+    "type": "GherkinDocument"
+  },
+  "type": "gherkin-document",
+  "uri": "testdata/good/i18n_zh-cn.feature"
+}

gherkin/java/testdata/good/i18n_zh-cn.feature.pickles.ndjson

@@ -0,0 +1,27 @@
+{
+  "pickle": {
+    "language": "zh-CN",
+    "locations": [
+      {
+        "column": 3,
+        "line": 4
+      }
+    ],
+    "name": "冒号可以用在功能和场景中",
+    "steps": [
+      {
+        "arguments": [],
+        "locations": [
+          {
+            "column": 7,
+            "line": 5
+          }
+        ],
+        "text": "冒号"
+      }
+    ],
+    "tags": []
+  },
+  "type": "pickle",
+  "uri": "testdata/good/i18n_zh-cn.feature"
+}

gherkin/java/testdata/good/i18n_zh-cn.feature.source.ndjson

@@ -0,0 +1,9 @@
+{
+  "data": "#language: zh-CN\n功能：汉语解析\n\n  场景：冒号可以用在功能和场景中\n    * 冒号\n",
+  "media": {
+    "encoding": "utf-8",
+    "type": "text/vnd.cucumber.gherkin+plain"
+  },
+  "type": "source",
+  "uri": "testdata/good/i18n_zh-cn.feature"
+}

gherkin/java/testdata/good/i18n_zh-cn.feature.tokens

@@ -0,0 +1,6 @@
+(1:1)Language:/zh-CN/
+(2:1)FeatureLine:功能/汉语解析/
+(3:1)Empty://
+(4:3)ScenarioLine:场景/冒号可以用在功能和场景中/
+(5:5)StepLine:* /冒号/
+EOF