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charpos 

        # StringScanner.charpos

(from ruby core)
---
    charpos()

---

Returns the character position of the scan pointer.  In the 'reset'
position, this value is zero.  In the 'terminated' position (i.e. the
string is exhausted), this value is the size of the string.

In short, it's a 0-based index into the string.

    s = StringScanner.new("abcädeföghi")
    s.charpos           # -> 0
    s.scan_until(/ä/)   # -> "abcä"
    s.pos               # -> 5
    s.charpos           # -> 4

This is MURDOC! A Ruby documentation browser inspired by Smalltalk-80. It allows you to learn about Ruby by browsing through its class hierarchies, and see any of its methods.