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Editorial Team
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Asked: 2026-05-22T22:21:03+00:00

Consider the following simple exercise: package require Tclx keylset myArray v1.5 ready puts $myArray

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Consider the following simple exercise:

package require Tclx
keylset myArray "v1.5" "ready"
puts $myArray

The expected output:

{v1.5 ready}

The actual output:

{v1 {{5 ready}}}

My questions are

  1. This seems to be an error in keylset, I have confirmed this behavior on both 8.4 and 8.5
  2. How do I get around it? I have tried several ways to quote the key to no avail.
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1 Answer

  1. Editorial Team

    It’s not a bug, it’s a feature. 🙂
    Dot is a hierarchical key separator in keyed list.

    See the example for explanation:

    keylset myArray {v1.5} "ready" {v1.6} "empty"

puts $myArray                ;# ==> {v1 {{5 ready} {6 empty}}}
puts [keylget myArray v1]    ;# ==> {5 ready} {6 empty}
puts [keylget myArray v1.5]  ;# ==> ready
puts [keylget myArray v1.6]  ;# ==> empty
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