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RE: [xsl] Two "Philisophical" questions about the language

2009-01-18 10:31:34
To those questions I would add another one:
  why "if" xpath 2.0 expression demands "else" part?

  IfExpr    ::=    "if" "(" Expr ")" "then" ExprSingle "else" 
ExprSingle 

The main reason was to avoid the infamous dangling-else ambiguity:

if (c) then if (d) then e else f

I personally would have preferred the solution of a closing token such as
"end-if" or "fi".

I do remember a half-day spent on if/then/else, where it was clear that
no-one much liked the status-quo syntax, but no-one could come up with
improvements that had majority support. 

Michael Kay
http://www.saxonica.com/ 


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