Merge commit 'a591c85cba3570d69a809b2099c3f108c7e26eb8' as 'taccle'

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diff --git a/taccle/examples/if_then_else.tac b/taccle/examples/if_then_else.tac
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+# $Id: if_then_else.tac,v 1.1 2004/08/18 23:53:42 tang Exp $
+
+# The classical if/then/else ambiguity.  taccle resolves this by
+# giving higher precedence to shifting else.
+#
+# References:
+#   Dragon book, page 250
+#   lex & yacc, pages 233-235
+
+%token IF ELSE TERMINAL
+
+%%
+
+stmt: IF '(' cond ')' stmt
+ | IF '(' cond ')' stmt ELSE stmt
+ | TERMINAL;
+
+cond: TERMINAL;