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27-Jul-2006 |
Michael Norrish <Michael.Norrish@nicta.com.au> |
String literals are now lexed in accordance with SML rules. That means things like ``"\t\000\u004f"`` are possible. There are three things to watch out for. The syntax for control characters has to double the ^ symbol. Thus ``"\^^C"`` for CHR 3. This is just a generalisation of the rule that says ^ has to be doubled everywhere. I.e., you also have to write ``"^^"`` to get a string containing a single caret. Similarly, you have to ^-escape the ` symbol wherever it may occur. Finally, the SML syntax for breaking long strings over multiple lines won't work until I mess with the quotation filter again. In other words, you can't yet write ``"hello \ \there"`` and have it work (yet).
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