Am Fr., 28. Okt. 2022 um 20:53 Uhr schrieb Vincent Manis <xxxxxx@telus.net>: > > +1 on the principle. I am a little concerned about the name. Of course > the name `unwind-protect' is entrenched in CL. But the name doesn't show > the connection with Scheme's dynamic-wind. Would `dynamic-wind-once' be > a better choice? -- vincent Thanks for chiming in. IMO, it is actually a good thing for the name to be quite different from Scheme's dynamic-wind. Dynamic-wind is built so that control can leave and enter the THUNK several times and has the notion of a BEFORE-THUNK. The first is forbidden and the latter is not the case for unwind-protect. Moreover, unwind-protect is syntax, while dynamic-wind-once would probably be expected to be a procedure as well. What do you think?