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$SyntaxHandler problem

• To: mathgroup at smc.vnet.net
• Subject: [mg113173] $SyntaxHandler problem
• From: Andrea <btlgs2000 at gmail.com>
• Date: Sat, 16 Oct 2010 13:12:41 -0400 (EDT)

I'm exploring functions in the tutorial/TheMainLoop section of
Mathematica help but $SyntaxHandler doesn't seem to work.
I copied and executed the following code from pag. 694 of "The
Mathematica book" fourth edition:

>>$SyntaxHandler = (Print[StringForm["Error at char `1` in `2`", #2, #1]]; $Failed) &

then I wrote

>> 3 + /

obtaining

>>Syntax::tsntxi: "3+/" is incomplete; more input is needed.
>>Syntax::sntxi: Incomplete expression; more input is needed.

but not my customized error string.

Does anyone understand why?
Thanks,
Andrea