text-range filtering

[GoogleCodeExporter]

What is the expected output? What do you see instead?

I have column in which data looks like that: "nnnn/nnnn/nnnn"
I want to use number-range filter for that column but as soon as I enter any 
number it shows me that there is no result. If I enter my data as 
"nnnnnnnnnnnn" it works good. Would it be possible to make text-range 
filtering? I would ask my users to input search data like that "nnnnnnnnnnnn", 
but filtering would show row where particular column is "nnnn/nnnn/nnnn". So 
search should just ignore "/" in data. Is it possible? 

Original issue reported on code.google.com by [email protected] on 29 Jun 2015 at 12:13