Blame SOURCES/ksh-20120801-mb-after-argvar.patch

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diff -up ksh-20120801/src/cmd/ksh93/sh/macro.c.orig ksh-20120801/src/cmd/ksh93/sh/macro.c
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--- ksh-20120801/src/cmd/ksh93/sh/macro.c.orig	2015-08-24 14:29:58.602967855 -0300
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+++ ksh-20120801/src/cmd/ksh93/sh/macro.c	2015-08-24 14:31:13.682850008 -0300
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@@ -1479,7 +1479,10 @@ retry1:
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 	    default:
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 		goto nosub;
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 	}
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-	c = fcmbget(&LEN);
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+	if(type)
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+		c = fcmbget(&LEN);
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+	else
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+		c = fcget();
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 	if(type>M_TREE)
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 	{
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 		if(c!=RBRACE)