On Jan 3, 2012, at 12:16 PM, Allen Wirfs-Brock wrote: > On Jan 3, 2012, at 12:01 PM, Brendan Eich wrote: > >> On Jan 3, 2012, at 1:29 AM, Andreas Rossberg wrote: >> >>> ... >> >> >>> For multi-part scripts we need a way to switch the >>> _proper_ top-level into extended mode. Or should I not be able to >>> write (the relevant bits of) a multi-part script in extended mode at >>> all? >> >> The proposal may have been unclear on this point: the top level would allow >> as much new syntax and semantics as can be tolerated backwards-compatibly. >> The hard cases are let, lexical scope in the free-variables-are-errors sense >> Dave described (extant globals at start of module body are imported), and >> any runtime shifts we want (completion reform, typeof null). > > I suspect there will also be issue related to legacy function declarations > within blocks.
Possibly, given the intersection semantics between IE and its followers and Firefox are such that you can use a function declared in a block after the block ends, if control flow reached the declaration. Legacy const is less of an issue since IE did not bite that apple. /be _______________________________________________ es-discuss mailing list es-discuss@mozilla.org https://mail.mozilla.org/listinfo/es-discuss
