From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
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To: | Robert Haas <robertmhaas(at)gmail(dot)com> |
Cc: | Andrew Dunstan <andrew(at)dunslane(dot)net>, Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com>, Joey Adams <joeyadams3(dot)14159(at)gmail(dot)com>, "David E(dot) Wheeler" <david(at)kineticode(dot)com>, Claes Jakobsson <claes(at)surfar(dot)nu>, Dimitri Fontaine <dimitri(at)2ndquadrant(dot)fr>, Merlin Moncure <mmoncure(at)gmail(dot)com>, Magnus Hagander <magnus(at)hagander(dot)net>, Jan Urbański <wulczer(at)wulczer(dot)org>, Simon Riggs <simon(at)2ndquadrant(dot)com>, Bruce Momjian <bruce(at)momjian(dot)us>, PostgreSQL-development Hackers <pgsql-hackers(at)postgresql(dot)org>, Jan Wieck <janwieck(at)yahoo(dot)com> |
Subject: | Re: JSON for PG 9.2 |
Date: | 2012-01-20 15:27:24 |
Message-ID: | 9459.1327073244@sss.pgh.pa.us |
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Robert Haas <robertmhaas(at)gmail(dot)com> writes:
> The code I've written so far does no canonicalization of the input
> value of any kind, just as we do for XML.
Fair enough.
> So, given that framework, what the patch does is this: if you're using
> UTF-8, then \uXXXX is accepted, provided that XXXX is something that
> equates to a legal Unicode code point. It isn't converted to the
> corresponding character: it's just validated. If you're NOT using
> UTF-8, then it allows \uXXXX for code points up through 127 (which we
> assume are the same in all encodings) and anything higher than that is
> rejected.
This seems a bit silly. If you're going to leave the escape sequence as
ASCII, then why not just validate that it names a legal Unicode code
point and be done? There is no reason whatever that that behavior needs
to depend on the database encoding.
regards, tom lane
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