Bug#330036: screen: documentation issue about blankerprg option

[Steve Kemp]

  Please find attached two patches to fix this.  Tested on sid.

Steve
-- 

--- screen-4.0.3.orig/comm.c	2003-09-08 15:25:08.000000000 +0100
+++ screen-4.0.3/comm.c	2007-10-24 00:10:17.000000000 +0100
@@ -98,7 +98,7 @@
 #endif
   { "blanker",		NEED_DISPLAY|ARGS_0},
 #ifdef BLANKER_PRG
-  { "blankerprg",	ARGS_1|ARGS_ORMORE },
+  { "blankerprg",	ARGS_01 },
 #endif
   { "break",		NEED_FORE|ARGS_01 },
   { "breaktype",	NEED_FORE|ARGS_01 },

--- screen-4.0.3.orig/process.c	2003-09-18 13:53:54.000000000 +0100
+++ screen-4.0.3/process.c	2007-10-24 00:10:17.000000000 +0100
@@ -3777,16 +3785,20 @@
       break;
 #ifdef BLANKER_PRG
     case RC_BLANKERPRG:
+      /* free old one */
       if (blankerprg)
-	{
-	  char **pp;
-	  for (pp = blankerprg; *pp; pp++)
-	    free(*pp);
-	  free(blankerprg);
-	  blankerprg = 0;
-	}
-      if (args[0][0])
-	blankerprg = SaveArgs(args);
+        {
+          char **pp;
+          for (pp = blankerprg; *pp; pp++)
+            free(*pp);
+          free(blankerprg);
+          blankerprg = 0;
+        }
+      if ((args) && (*args)) 
+        {
+          /* store new value */
+          blankerprg = SaveArgs(args);
+        }
       break;
 #endif
     case RC_IDLE:
@@ -3821,6 +3833,15 @@
 	    Msg(0, "idle off");
 	}
       break;