[PATCH for Dlang support 1/4] examples: d: fix the handling of unary +

It was interpreting "+exp" as "-exp".

* examples/d/calc.y: Fix.
* examples/d/calc.test: Check it.
---
 examples/d/calc.y | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/examples/d/calc.y b/examples/d/calc.y
index b0dee929..15b4f7c7 100644
--- a/examples/d/calc.y
+++ b/examples/d/calc.y
@@ -61,7 +61,7 @@ exp:
 | exp "-" exp          { $$ = $1 - $3; }
 | exp "*" exp          { $$ = $1 * $3; }
 | exp "/" exp          { $$ = $1 / $3; }
-| "+" exp  %prec UNARY { $$ = -$2; }
+| "+" exp  %prec UNARY { $$ = $2; }
 | "-" exp  %prec UNARY { $$ = -$2; }
 | "(" exp ")"          { $$ = $2; }
 ;
-- 
2.17.1