I have a string which looks like:

```
#chat :hi there

```

And I'd like to scan all the text from the `:` to a string, so it ends like `hi there`

I've tried

```
[[NSScanner scannerWithString:argument] scanUpToString:@":" intoString:&newarg];

```

But `newarg` contains only `#chat`. How this can be achieved?