--- !ruby/object:RI::MethodDescription 
aliases: []

block_params: 
comment: 
- !ruby/struct:SM::Flow::P 
  body: Returns whether input encoding is UTF-8 or not.
- !ruby/struct:SM::Flow::P 
  body: <b>Note</b> don't expect this return value is MatchData.
full_name: Kconv#isutf8
is_singleton: false
name: isutf8
params: |
  Kconv.isutf8(str)   -> obj or nil

visibility: public