[Tcl-bugs] [ tcl-Bugs-2929546 ] "dict with" binds to varibles outside its scope

[SourceForge.net <no...@so...>]

Bugs item #2929546, was opened at 2010-01-10 16:54
Message generated for change (Tracker Item Submitted) made by mpdanielson
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=110894&aid=2929546&group_id=10894

Please note that this message will contain a full copy of the comment thread,
including the initial issue submission, for this request,
not just the latest update.
Category: 15. Dict Object
Group: development: 8.6b1.1
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Paul Danielson (mpdanielson)
Assigned to: Donal K. Fellows (dkf)
Summary: "dict with" binds to varibles outside its scope

Initial Comment:
Setting a variable inside a "dict with" body changes the value of the dictionary and also changes the value of a variable with the same name outside of the body. In the following sequence, the value of ::a is changed when the value of the entry named "a" in the dictionary "x" is changed. I expected that only the dictionary would be changed.
(paul) 101 % set tcl_patchLevel
8.6b1.1
(paul) 102 % set a A
A
(paul) 103 % dict set x a 1
a 1
(paul) 104 % set a
A
(paul) 105 % set x
a 1
(paul) 106 % dict with x {
set a
}
1
(paul) 107 % dict with x {
set a 2
}
2
(paul) 108 % set a
2
(paul) 109 % set x
a 2


----------------------------------------------------------------------

You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=110894&aid=2929546&group_id=10894