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Can't (ssexpand 'a+~b)
1 point by conanite 5620 days ago | discuss
I mentioned this in a comment on "New Features" a while back but there was no reply ... but I'm sure it's important!

  arc> (ssexpand 'a+~b)
  a+~b
I expected

  (andf a ~b)
The problem is that expand-compose is triggered by ~ occurring intra-symbol, but expand-compose only expands initial ~.

See http://arclanguage.org/item?id=9960 for more details, including what I think may be a fix