A somewhat larger fix for problems regarding renaming of a variable in 
etoys.


"Change Set:        renameVariable-yo
Date:            18 January 2004
Author:            Yoshiki Ohshima

Make the rename variable feature work.  As long as the variable is not 
used in textually coded scripts, the cases like it is referenced in the 
other player's script, multiple occurence in more than one script, etc, 
are solved.

Some fixes and refinements by Scott Wallace, 7 March 04:
¥ Fixed a subtle bug involving renaming a variable when a script of a 
different object bore a direct reference to that instance variable in a 
sibling object of the object in whose viewer the variable-rename is 
requested.
¥ Moved the logic for deciding whether a morph is a complex watcher to 
UpdatingStringMorph, which is the only morph to which it applies.
¥ Moved the idiosyncratic logic for isPlayer:ofReferencingTile: to 
PhraseTileMorph, the only place for which it makes sense.
¥ Wording tweaks.
¥ Method comment tweaks.

Version 7 - sw 3/8/2004 - as per Yoshiki's suggestion, restored the 
warning about variable-names in textually-coded scripts not being 
automatically converted, for situations where at least one 
textually-coded script is known to exist.
"!



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