[Tcl-bugs] [tcl] (Ticket 0e92c404f1 - Change) Side effect on string range command (from encoding and format commands)

[<tcl...@tc...>]

Repository: http://core.tcl.tk/tcl

Change Notification For
  [Side effect on string range command (from encoding and format commands)]
  Ticket   http://core.tcl.tk/tcl/tktview?name=0e92c404f19ede5b2eb06e6db27647d3138cc56f
  Artifact http://core.tcl.tk/tcl/tinfo?name=ac313facd875225ce785e500ee683cfb58ec56f3
  On       2014-04-30T16:54:49
  By       anonymous

Changed Fields
  assignee:        nobody
  closer:          nobody
  comment:         Hi all,

                   I found one very confusing behavior in tcl.

                   set x "\\u5317\\u4eac" # Beijing in Chinese  set y $x  puts "x: '$x'
                   -> '[string range $x 0 100]''"  puts "y: '$y'"  encoding convertfrom
                   "iso8859-1" $y  puts "y: '$y'"  # format "%s" $y  puts "x: '$x' ->
                   '[string range $x 0 100]'"

                   output:  x: '北京' -> '北京''  y: '北京'  y: '北京'  x:
                   '北京' -> '¬'

                   if we uncomment second to last line above output is ok:

                   x: '北京' -> '北京''  y: '北京'  y: '北京'  x: '北京' ->
                   '北京'

                   encoding and format commands have side effects on string range command
                   (In the second example they negate each other producing good result).
                   Pay attention that neither x nor y were manipulated in any way.
                   However string range command seems to be affected. I use tcl 8.5.

                   Thanks,  Nikola
  foundin:         tcl 8.5
  is_private:      0
  login:           anonymous
  priority:        5 Medium
  private_contact: 6b82a19e85309b70487c05b681a5f63a1a1d64bd
  resolution:      None
  severity:        Important
  status:          Open
  submitter:       anonymous
  subsystem:       16. Commands A-H
  title:           Side effect on string range command (from encoding and format
                   commands)
  type:            Bug