[Tcl-bugs] [ tcl-Bugs-3513146 ] string index permits invalid charIndex

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Bugs item #3513146, was opened at 2012-03-30 01:54
Message generated for change (Tracker Item Submitted) made by blacksqr
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Category: 18. Commands M-Z
Group: development: 8.6b2
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Stephen Huntley (blacksqr)
Assigned to: Donal K. Fellows (dkf)
Summary: string index permits invalid charIndex

Initial Comment:
% set x a
a
% set val [string index $x end]]
a]

Note the extra close bracket at the end of the last statement.  Instead of throwing an error for imbalanced brackets, the extra bracket is strangely passed through to the result.

Tested on Tcl 8.5.8 and 8.6b2 (Ubuntu)

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You can respond by visiting: 
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