Tried in Pharo 1.4.

Scanner allowUnderscoreAsAssignment�� ->> true.

I then try to compile:

testUnderscore
�� | a |
�� a _ 'a'.
�� self assert: a equals: 'a'

And I get:

testUnderscore
�� | a |
�� a _� Nothing more expected ->'a'.
�� self assert: a equals: 'a'

thanks

--
Mariano
http://marianopeck.wordpress.com