On Feb 25, 2007, at 4:44 PM, John Cowan wrote:
William D Clinger scripsit:
According to the current draft R6RS, implementations
are not allowed to "abort at run time"; they would
have to raise a &violation exception, from which the
program might conceivably recover in a portable way.
According to 2.7, however, if there is a syntax error (and
(if (foo))
is a syntax error, just as
((((((
is, the program or library is not allowed to begin execution.
In the former case, I do not see how raising an exception can possibly
take effect;
It happens when calling eval. I expect my implementation of choice not
to abort at runtime when the s-expression (if (foo)) is eval'd.
in the latter case, there can't possibly be any handler
at all.
Maybe you were reading a file/string containing left parentheses inside
a handler?
Aziz,,,
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