#482: We must skip lines consisting only of soft-hypen no matter how many

they are.

Also extended the test file. Thanks to @syjer to bring these cases up.

Author: rototor

openhtmltopdf-core/src/main/java/com/openhtmltopdf/layout/Breaker.java

@@ -175,7 +175,7 @@ public static LineBreakResult breakText(LayoutContext c,
                     } else {
 						if (context.getWidth() == 0) {
 							String calculatedSubstring = context.getCalculatedSubstring();
-							if (calculatedSubstring.length() == 1 && calculatedSubstring.charAt(0) == SOFT_HYPHEN) {
+							if (calculatedSubstring.chars().allMatch(ch -> ch == SOFT_HYPHEN)) {
 								// Consists only of soft hypen, we have to break here and skip all togheter. We do not
                                 // need to try breaking on the charater level, this will not work.
 								tryToBreakAnywhere = true;

openhtmltopdf-examples/src/main/resources/testcases/oom.html

@@ -18,6 +18,23 @@
 	<tr>
 		<td>­</td>
 	</tr>
+	<tr>
+		<td>­­</td>
+	</tr>
+	<tr>
+		<td>­­­</td>
+	</tr>
+</table>
+<table class="content">
+	<tr>
+		<td> ­</td>
+	</tr>
+	<tr>
+		<td>­ ­</td>
+	</tr>
+	<tr>
+		<td>­ ­ ­</td>
+	</tr>
 </table>
 </body>
 </html>