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-rw-r--r--cups/ppd.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/cups/ppd.h b/cups/ppd.h
index 108f20e2a..f2ba50db8 100644
--- a/cups/ppd.h
+++ b/cups/ppd.h
@@ -226,6 +226,7 @@ typedef struct ppd_profile_s /**** sRGB Color Profiles @deprecated@ ****/
/**** New in CUPS 1.2/macOS 10.5 ****/
typedef enum ppd_cptype_e /**** Custom Parameter Type @deprecated@ ****/
{
+ PPD_CUSTOM_UNKNOWN = -1, /* Unknown type (error) */
PPD_CUSTOM_CURVE, /* Curve value for f(x) = x^value */
PPD_CUSTOM_INT, /* Integer number value */
PPD_CUSTOM_INVCURVE, /* Curve value for f(x) = x^(1/value) */