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cpp: raise macro argument count to 64 (sic) for freetype

--- a/sys/src/cmd/cpp/cpp.h

+++ b/sys/src/cmd/cpp/cpp.h

@@ -1,6 +1,6 @@

 #define	INS	32768		/* input buffer */

 #define	OBS	4096		/* outbut buffer */

-#define	NARG	32		/* Max number arguments to a macro */

+#define	NARG	64		/* Max number arguments to a macro */

 #define	NINCLUDE 64		/* Max number of include directories (-I) */

 #define	NIF	32		/* depth of nesting of #if */

 #ifndef EOF

-- 

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