From 2a06655e5c1925f09d5a2e38cd073eb1b6f069ad Mon Sep 17 00:00:00 2001
From: Michael R Sweet <michael.r.sweet@gmail.com>
Date: Tue, 15 Oct 2019 17:05:55 -0400
Subject: [PATCH] PPD files containing custom option keywords did not work
 (Issue #5639)

diff --git a/cups/ppd.c b/cups/ppd.c
index fae19c42e..ff52df2e1 100644
--- a/cups/ppd.c
+++ b/cups/ppd.c
@@ -1874,9 +1874,9 @@ _ppdOpen(
     {
       if (!_cups_strcasecmp(name, "custom") || !_cups_strncasecmp(name, "custom.", 7))
       {
-        pg->ppd_status = PPD_ILLEGAL_OPTION_KEYWORD;
-
-        goto error;
+        char cname[PPD_MAX_NAME];	/* Rewrite with a leading underscore */
+        snprintf(cname, sizeof(cname), "_%s", name);
+        strlcpy(name, cname, sizeof(name));
       }
 
       if ((size = ppdPageSize(ppd, name)) == NULL)
@@ -1903,9 +1903,9 @@ _ppdOpen(
     {
       if (!_cups_strcasecmp(name, "custom") || !_cups_strncasecmp(name, "custom.", 7))
       {
-        pg->ppd_status = PPD_ILLEGAL_OPTION_KEYWORD;
-
-        goto error;
+        char cname[PPD_MAX_NAME];	/* Rewrite with a leading underscore */
+        snprintf(cname, sizeof(cname), "_%s", name);
+        strlcpy(name, cname, sizeof(name));
       }
 
       if ((size = ppdPageSize(ppd, name)) == NULL)
@@ -1939,9 +1939,9 @@ _ppdOpen(
 
       if (!_cups_strcasecmp(name, "custom") || !_cups_strncasecmp(name, "custom.", 7))
       {
-        pg->ppd_status = PPD_ILLEGAL_OPTION_KEYWORD;
-
-        goto error;
+        char cname[PPD_MAX_NAME];	/* Rewrite with a leading underscore */
+        snprintf(cname, sizeof(cname), "_%s", name);
+        strlcpy(name, cname, sizeof(name));
       }
 
       if (!strcmp(keyword, "PageSize"))