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-rw-r--r--ext/tk/lib/tk/variable.rb7
1 files changed, 7 insertions, 0 deletions
diff --git a/ext/tk/lib/tk/variable.rb b/ext/tk/lib/tk/variable.rb
index d5882fd649..62d4ec29ae 100644
--- a/ext/tk/lib/tk/variable.rb
+++ b/ext/tk/lib/tk/variable.rb
@@ -961,6 +961,13 @@ class TkVarAccess<TkVariable
@id = varname
TkVar_ID_TBL[@id] = self
+ @def_default = false
+ @default_val = nil
+
+ @trace_var = nil
+ @trace_elem = nil
+ @trace_opts = nil
+
# teach Tk-ip that @id is global var
INTERP._invoke_without_enc('global', @id)