Ok I would like to find out the place of a special character in order to trim a string from there. I works with a normal letter but it doesn't seem to work with characters like | 

```
'Yeezy Boost 700 Analog | EG7596'.search('a') 
>>>  18
'Yeezy Boost 700 Analog | EG7596'.search('7') 
>>>  12 
'Yeezy Boost 700 Analog | EG7596'.search('|')
>>> 0

```

why