I don't think that's true. Here's an example from IBM APL2 Workstation: (1 2)(3 4)∘.∘.*(5 6)(7 8) SYNTAX ERROR (1 2)(3 4)∘.∘.*(5 6)(7 8) ^
(1 2)(3 4)(∘.∘).*(5 6)(7 8) SYNTAX ERROR (1 2)(3 4)(∘.∘).*(5 6)(7 8) ^ (1 2)(3 4)∘.(∘.*)(5 6)(7 8) 1 1 1 1 32 64 128 256 243 729 2187 6561 1024 4096 16384 65536 Jay. On 28 June 2016 at 16:26, Louis de Forcrand <ol...@bluewin.ch> wrote: > It seems to me that APL2 parses it as > °.(°.*) , in which case APL2 has some operators with a long left scope and > others with a long right scope. >