28477 2015-04-13 06:31:35 +0000 Warn against boolean arguments defaulting to true 2015-07-07 06:19:40 +0000 1 1 1 Unclassified WebAppsWG WebIDL unspecified PC All RESOLVED FIXED P2 normal --- 1 annevk cam bzbarsky jonas mike public-script-coord public-webapps-bugzilla oldest_to_newest 119456 0 annevk 2015-04-13 06:31:35 +0000 Is there any API other than XMLHttpRequest where this happens? Note that even XMLHttpRequest does not strictly do this since it needs to overload. So perhaps we could simply outlaw `= true` in general... 119464 1 bzbarsky 2015-04-13 12:52:31 +0000 I don't see any instances of optional boolean args defaulting true. There seem to be a bunch of dictionary boolean options defaulting true, though... 119467 2 annevk 2015-04-13 13:04:51 +0000 Stable features? That seems unfortunate. I guess it's less of a problem with dictionaries, but it still seems bad. 119471 3 jonas 2015-04-13 14:06:06 +0000 Yeah, dictionary arguments defaulting to true seems unfortunate/confusing too. 119472 4 jonas 2015-04-13 14:08:12 +0000 Yet here we are: http://mxr.mozilla.org/mozilla-central/search?string=%3D+true&find=\.webidl%24&tree=mozilla-central 119474 5 bzbarsky 2015-04-13 14:42:02 +0000 > Stable features? WebGL, Canvas2d, IDB, SVGGraphicsElement.getBBox, WebRTC. 121839 6 cam 2015-07-07 06:19:40 +0000 https://github.com/heycam/webidl/commit/fcc7e379bfbf155a8eafcbb23b20f46ad21e4e6b