HMR-157 Fix parsing Jira ticket numbers

Add more test cases

Author: travkin79

flexmark-ext-jira-ticket-links/src/main/java/com/vladsch/flexmark/ext/jira/tickets/internal/JiraTicketNumberInLineParserExtension.java

@@ -39,6 +39,14 @@ public void finalizeBlock(@NotNull InlineParser inlineParser) {
 
 	@Override
 	public boolean parse(@NotNull LightInlineParser inlineParser) {
+		// abort if the preceding character is a word character
+		if (inlineParser.getIndex() > 0) {
+			char precedingChar = inlineParser.getInput().charAt(inlineParser.getIndex() - 1);
+			if (Character.isLetterOrDigit(precedingChar) || precedingChar == '_') {
+				return false;
+			}
+		}
+		
 		BasedSequence match = inlineParser.match(REGEX_JIRA_TICKET_NUMBER);
 		if (match == null) {
 			return false;

flexmark-ext-jira-ticket-links/src/test/resources/ext_jira_ast_spec.md

@@ -46,4 +46,28 @@ Document[0, 40]
     Text[17, 40] chars:[17, 40, " foll … text."]
 ````````````````````````````````
 
+---
+
+## Non-tickets
+
+Ticket numbers have to begin and end at a word boundary
+
+```````````````````````````````` example Non-tickets: 1
+textHMR-157
+.
+<p>textHMR-157</p>
+.
+Document[0, 11]
+  Paragraph[0, 11]
+    Text[0, 11] chars:[0, 11, "textH … R-157"]
+````````````````````````````````
 
+```````````````````````````````` example Non-tickets: 2
+HMR-157text
+.
+<p>HMR-157text</p>
+.
+Document[0, 11]
+  Paragraph[0, 11]
+    Text[0, 11] chars:[0, 11, "HMR-1 … 7text"]
+````````````````````````````````