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MacIvory conversion experience
Date: Sun, 19 Feb 89 22:08:02 EST
Date: Sun, 19 Feb 89 16:33 EST
From: Greenwald@stony-brook.scrc.symbolics.com (Michael Greenwald)
Date: Fri, 17 Feb 89 17:30 EST
From: barmar@Think.COM (Barry Margolin)
One problem that has surprised me, though, is that Symbolics changed the
order of the implicit arguments to flavor methods. On 3600's the first
two arguments to methods are SELF and SYS:SELF-MAPPING-TABLE, but on the
Ivory they are in the opposite order.
When you use SI:ADVISE-PERMANENTLY with compiled advice, then the
symbols SELF and SYS:SELF-MAPPING-TABLE are bound inside the body of the
Although I generally use compiled advice in all my patches, I'd rather
not write code that is dependent on it, so I don't think I'll make use
of this feature. For now I'll use the TMC-SELF-ARG subst I wrote.
The patch that I submitted works in both interpreted and compiled cases.
I didn't send that to the mailing list, because it took more than a 1
The right fix isn't to write your own function, but to patch
SI:ENCAPSULATION-LAMBDA-LIST instead. I'll submit a patch for this for
7.4. I don't guarantee that it will pass patch-review.
Is that because the 7.4 freeze deadline is coming up?
Partially. Also, partially for the reason I cite below, and finally,
because I am generally hesitant to predict the future.
can't believe it would fail for technical reasons. Or do they
discourage installing fixes to unsupported features (I can understand
discouraging the work, but if it's already done...)?
Well, this won't be documented or supported, so the perceived benefit is
nil, additionally, any change has some probability of introducing a bug.
It's late in the 7.4 release cycle, so the change might be viewed as
potentially too dangerous.
Thanks for the info, though.