Translation Helper bugs

[heyuxian]

Describe the bug
When the URL contains an anchor, the Translation Helper API does not render the URL properly.

• Parser
• HtmlRenderer
• Formatter
• FlexmarkHtmlParser
• DocxRenderer
• PdfConverterExtension
• extension(s)

To Reproduce

Test Code:

• refer: https://github.com/vsch/flexmark-java/blob/master/flexmark-java-samples/src/com/vladsch/flexmark/samples/TranslationSample.java#L57

Just add an anchor to the URL:

final String markdown = "This is [*Sparta*](http://sparta.com)";
=>
final String markdown = "This is [*Sparta*](http://sparta.com#anchor)";

---

Resulting Output

This is [*Sparta*](http://sparta.com#anchor)
--------------------------
<<<*Sparta*
>>>*sPaARTaA*
<<<This is [_1_](_2_#_1_)
>>>thiIS iIS [_1_](_2_#_1_)
--------------------------
thiIS iIS [*sPaARTaA*](http://sparta.com#_1_)

[vsch]

@heyuxian, thank you for catching this. It is an omission in handling anchors for links which are not self-references to headings in the document. If the link has a page ref and an anchor then the anchor is left as the translation reference instead of being restored to original text.

I updated the code in the master branch and releasing a new version.

Fix for this is available. Repo updated, maven updated but may take a while to show up in maven central.

[vsch]

@heyuxian, I got a notification with your other issue of anchor overwriting other non-translating text. Which for some reason disappeared from GitHub but I can confirm this is a bug. Anchor ids were tracked separately but their text was put into non-translating text map. They need their own map which is now implemented and will be released shortly.

Fix for this is available. Repo updated, maven updated but may take a while to show up in maven central.

[vsch]

Missing post:

```java
  System.out.println("Hello world");
```
This is [Sparta](http://sparta.com#anchor)

translatingTexts

```_1_ <== (1)
_2_
```
This is [_3_](_4_#_1_) <== (1)

translatedTexts

```anchor <== (1)
System.out.println("Hello world");
```
This is [Sparta](http://sparta.com#anchor) <== (1)

[heyuxian]

@vsch hi, I found another bug about the Translation Helper. When the <xxx> tag is on a separate line (no other characters), it will cause a placeholder error. please help to check. This is my test code:

MutableDataSet OPTIONS = new MutableDataSet()
            .set(Parser.BLANK_LINES_IN_AST, true)
            .set(Formatter.MAX_TRAILING_BLANK_LINES, 0)
            .set(Parser.EXTENSIONS, Lists.newArrayList(TablesExtension.create(), AnchorLinkExtension.create(),
                AttributesExtension.create()));

        Parser PARSER = Parser.builder(OPTIONS).build();
        Formatter FORMATTER = Formatter.builder(OPTIONS).build();
        String markdown = "# h1\n"
            + "<test>\n"
            + "hello\n"
            + "</test>"
            + "# h2\n";
        // 1. Parse the document to get markdown AST
        Document node = PARSER.parse(markdown);
        System.out.println(markdown);
        // 2. Format the document to get markdown strings for translation
        final TranslationHandler handler = FORMATTER.getTranslationHandler(new HeaderIdGenerator.Factory());
        final String formattedOutput = FORMATTER.translationRender(node, handler, RenderPurpose.TRANSLATION_SPANS);
        System.out.println(formattedOutput);
        // 3. Get the strings to be translated from translation handler
        final List<String> translatingTexts = handler.getTranslatingTexts();

        // 4. Have the strings translated by your translation service of preference
        final ArrayList<CharSequence> translatedTexts = new ArrayList<>(translatingTexts.size());
        // 5. Set the translated strings in the translation handler
        handler.setTranslatedTexts(translatingTexts.stream().collect(Collectors.toList()));
        // 6. Generate markdown with placeholders for non-translating string and out of context translations
        // the rest will already contain translated text
        final String partial = FORMATTER.translationRender(node, handler, RenderPurpose.TRANSLATED_SPANS);
        // 7. Parse the document with placeholders
        Node partialDoc = PARSER.parse(partial);
        // 8. Generate the final translated markdown
        final String translated = FORMATTER.translationRender(partialDoc, handler, RenderPurpose.TRANSLATED);
        System.out.println(translated);

formattedOutput

# h1

<__1_> <== 

**translated **

# h1

<__1_>  <== 

[heyuxian]

sorry, It's my bug, I will close this issue.