> From: Nigel Small <ni...@nigelsmall.com> > Date: Sat, 22 Aug 2015 17:08:48 +0100 > > I am looking for clarification on an aspect of Unicode bracket pairing, > specifically in relation to the following four characters: > > 298D; 2990; o # LEFT SQUARE BRACKET WITH TICK IN TOP CORNER > 298E; 298F; c # RIGHT SQUARE BRACKET WITH TICK IN BOTTOM CORNER > 298F; 298E; o # LEFT SQUARE BRACKET WITH TICK IN BOTTOM CORNER > 2990; 298D; c # RIGHT SQUARE BRACKET WITH TICK IN TOP CORNER > > These stand out from all other brackets listed in BidiBrackets.txt due to an > inconsistency in pairing. I have looked for references online on where these > brackets are used in the wild as mathematical symbols but have been unable to > find anything useful. > > All other bracket pairs are listed as opener followed by closer, sometimes > with > several code points in between.
I think the order in the file is by the codepoint in the leftmost column. All the rest is just a coincidence. But I don't speak for the Unicode Consortium, so please wait for a definitive reply.