Pattern match returns false, while it should return true

[Former user]

Hi, I use the next code, the test method should return true, but it returns false.

ExprEvaluator util = new ExprEvaluator();
IExpr pattern = util.evaluate("c_+a_+b_==d_");
IExpr exp = util.evaluate("x-y+o==t");
IPatternMatcher matcher = new PatternMatcher(pattern);
boolean test = matcher.test(exp);

[Axel Kramer]

this example created with the latest GIT sources gives "true" in my dev environment?

package org.matheclipse.core.examples;

import org.matheclipse.core.eval.ExprEvaluator;
import org.matheclipse.core.interfaces.IExpr;
import org.matheclipse.core.patternmatching.IPatternMatcher;
import org.matheclipse.core.patternmatching.PatternMatcher;
import org.matheclipse.parser.client.SyntaxError;
import org.matheclipse.parser.client.math.MathException;

public class PatternMatchingExample {
    public static void main(String[] args) {
        try {
            ExprEvaluator util = new ExprEvaluator();
            IExpr pattern = util.evaluate("c_+a_+b_==d_");
            IExpr exp = util.evaluate("x-y+o==t");
            IPatternMatcher matcher = new PatternMatcher(pattern);
            boolean test = matcher.test(exp);
            System.out.println(test);
        } catch (SyntaxError e) {
            // catch Symja parser errors here
            System.out.println(e.getMessage());
        } catch (MathException me) {
            // catch Symja math errors here
            System.out.println(me.getMessage());
        } catch (final Exception ex) {
            System.out.println(ex.getMessage());
        } catch (final StackOverflowError soe) {
            System.out.println(soe.getMessage());
        } catch (final OutOfMemoryError oome) {
            System.out.println(oome.getMessage());
        }
    }
}