Hi, I was reading the “C Extensions” section of GCC manual [0] about GNU extensions, and going through the part about conditional expression operand omission, I noticed it said it allowed the omission of the *middle* operand (then nicely allowing some construct really similar to the lisp or) But I don’t understand why the analogous omission of the last operand with the same semantics (returning the first operand if we need to return the omitted one) is not permitted then. It’s not already standard nor then supported by gcc, and though the same effect can be obtained by negating the first operand, I find usually more expressive to let a positive test expression. Also omitting the last instead of the middle operand would have seemed more natural to write (as it maybe would have allowed to omit the colon too, if I’m not wrong about something conflicting with it in C syntax, as it would simplify syntax and allow more non-simply-erroneous combinations of syntax). Is there any justification to that? was it just considered as unnecessary? Was this form considered less useful? was a feature looking alike lisp or considered more evidently useful? Should I ask on the main gcc list? [0] (info "(gcc-6) C Extensions") [1] (info "(gcc-6) Conditionals")
