Hey, On Tue, 29 Nov 2022, Alex Colomar via Gcc wrote: > How about the compiler parsing the parameter list twice? This _is_ unbounded look-ahead. You could avoid this by using "." for your new syntax. Use something unambiguous that can't be confused with other syntactic elements, e.g. with a different punctuator like '@' or the like. But I'm generally doubtful of this whole feature within C itself. It serves a purpose in documentation, so in man-pages it seems fine enough (but then still could use a different puncuator to not be confusable with C syntax). But within C it still can only serve a documentation purpose as no checking could be performed without also changes in how e.g. arrays are represented (they always would need to come with a size). It seems doubtful to introduce completely new and ambiguous syntax with all the problems Joseph lists just in order to be able to write documentation when there's a perfectly fine method to do so: comments. Ciao, Michael.
