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how to dereference a variable twice in tcl

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Krishna Das on Jul 17, 2020

  set jo jim
  puts $$jo ;# returns "$jim"
  puts [subst $$jo] ;# returns "can't read "jim": no such variable"
  set fred jo
  puts [subst $$fred] ;# returns "jim"

Source: wiki.tcl-lang.org

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