Subject: Re: [xsl] analyze-string gotcha/reminder From: David Carlisle <davidc@xxxxxxxxx> Date: Mon, 19 Nov 2012 15:28:42 +0000 |
It would be helpful if an XSLT processor issues a warning message when a single `{` and `}` are used in a regex -- this would immediately explain to the user the issue and the correction to be made.
But in a lot (most?) cases there would be no correction needed as an AVT was intended. I 'm not sure the system can easily suspect that the wrong usage has been used unless it is the special case that a single { has been used and can be evaluated at compile time and the resulting regex is a regex syntax error. But that generates an error not a warning. A case like \d{4} which generates the perfectly legal regex \d4 is a lot harder to generate a warning for, unless you generate a warning for _all_ uses of AVT in the regex string which would be annoying after a while,
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