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I didn't intend to use ",X" at all. That > > was from you. > > > > I think that should particularly be pointed out in > > comments is this bug: that "\," evaluates, just > > like "," does, when inside backquote. And it even > > splices, like ",@" does. This isn't obvious, even > > if it might be a rare/corner case. >=20 > So you think that somebody that is able to look up and understand the > Lisp part of the implementation of backquote expansion will - after > reading the comment that the reader construct expands like ,X -> (\, X) > - will _not_ understand that this implies that the symbol \, appearing in > a list inside a backquote expression has to be interpreted by backquote? >=20 > Here we disagree, I can't imagine such a person. I really have nothing more to say on this. I would just be repeating myself. In any case, we've agreed that it's unlikely that the bug will be fixed. And although I thought at one time that you agreed the bug existed, I'm not so sure now that you did. And as, IIUC, Andreas points out, clisp apparently just substitutes a different char for "," internally when it handles backquote, which just punts the problem to a different corner case (different char). So I guess nothing will be done, and maybe nothing reasonable can be done, for this.