Arc Forumnew | comments | leaders | submitlogin
2 points by malisper 3603 days ago | link | parent

I may have figured out a possible way to implement backquoting in such a way based off of Steele's implementation[0]. All that is needed is an addition macro that will be put outside of each backquote expansion. When that macro finally is expanded (when all of the other backquotes have been used up), it would go through and replace all of the specified symbols with a uniq symbol up to any further backquotes. This would make it possible to have the uniqs generated every time each backquote is executed.

The only problem I can think of is something like this:

  `(x@ `(x@))
How would one specify for the generated symbols for both x@ to be the same. There might already be a way to do it through use of unquoting but I'm not sure how that would interact with the backquote implementation.

[0] http://www.cs.cmu.edu/Groups/AI/html/cltl/clm/node367.html#S...