import java.util.*;
import java.lang.*;
import java.io.*;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		String s = "x=   2-3   y=3 z=   this,   that";
		String regex = "(?<=[^\\h=,]=\\h{0,100}[^\\h=,]{1,100})\\h+";
		String parts[] = s.split(regex);
		
		for (String part : parts)
    		System.out.println(part);
		
	}
}