Follow-up Comment #20, bug #50770 (group groff): [comment #18 comment #18:] > Our ideas about backward compatibility are probably quite close.
Yes, as Branden drove home, my analogy of compiled code is closer to the
generated grout than to the final typographic layout.
But that was a flaw in my analogy. My underlying point is that in limited
circumstances it should be acceptable to change the final output, as the
change in hyphenation patterns I cited could do.
> I have no problem with improvements to the compiler, but I would
> be annoyed if, when I compiled my program after installing the
> new version, its output had changed when I ran my program.
You might be annoyed, but it might be your fault if your code relied on
undefined behavior. ;-) That is, ultimately, what I claim the "+1v" in
PSPIC's .ne is.
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