Hi,

I am struggling with proper configuration of Option passed to search method with the Syntax.ECMAScript. I would expect that with Option.DEFAULT / Option.NONE regex with usage of ^ ,$ anchors and no explicit newline will fail with newline character. For example

byte[] pattern = "^[a-z]{1,10}$".getBytes();
byte[] str = "a\nb".getBytes();

Regex regex = new Regex(pattern, 0, pattern.length, Option.NONE, UTF8Encoding.INSTANCE, Syntax.ECMAScript);
Matcher matcher = regex.matcher(str);
int result = matcher.search(0, str.length, Option.DEFAULT);

should results with -1 but currently results with 0. Even passing Option.SINGLELINE does not change it. What I did to make this work, was to subtract the Option.MULTILINE

int result = matcher.search(0, str.length, -Option.MULTILINE)

I have tested this case with multiple online regex tools and JavaScript regex implementation in my browser and this example always gives me no match (as I expect). Only adding multiline option gives me similar result as with Joni library.

Setting syntax to Java works as expected and gives similar result as this snippet with built-in java regex

String pattern = "^[a-z]{1,10}$";
String str = "a\nb";

Pattern p = Pattern.compile(pattern);
java.util.regex.Matcher m = p.matcher(str);
boolean result = m.find();

Is the MULTILINE option default for library ECMAScript syntax and should it be? I was digging into the ECMAScript and looks like multiline = false is the default (user has to explicitly pass m flag).