--- a/src/gripes.cc	Fri Sep 15 10:13:17 1995 +0000
+++ b/src/gripes.cc	Fri Sep 15 10:22:34 1995 +0000
@@ -88,6 +88,12 @@
 }
 
 void
+gripe_invalid_value_specified (const char *name)
+{
+  warning ("invalid value specified for `%s'", name);
+}
+
+void
 gripe_2_or_3_dim_plot (void)
 {
   error ("plot: can only plot in 2 or 3 dimensions");

--- a/src/gripes.h	Fri Sep 15 10:13:17 1995 +0000
+++ b/src/gripes.h	Fri Sep 15 10:22:34 1995 +0000
@@ -35,6 +35,7 @@
 extern void gripe_user_supplied_eval (const char *name);
 extern void gripe_user_returned_invalid (const char *name);
 extern void gripe_invalid_conversion (const char *from, const char *to);
+extern void gripe_invalid_value_specified (const char *name);
 extern void gripe_2_or_3_dim_plot (void);
 extern void gripe_unrecognized_float_fmt (void);
 extern void gripe_unrecognized_data_fmt (const char *warn_for);

--- a/src/user-prefs.cc	Fri Sep 15 10:13:17 1995 +0000
+++ b/src/user-prefs.cc	Fri Sep 15 10:22:34 1995 +0000
@@ -28,6 +28,7 @@
 #include <cstring>
 
 #include "error.h"
+#include "gripes.h"
 #include "mappers.h"
 #include "user-prefs.h"
 #include "utils.h"
@@ -93,6 +94,9 @@
 //   return of  0 => never ok.
 //   return of -1 => ok, but give me warning (default).
 
+// XXX FIXME XXX -- should also allow zero to mean "false" and nonzero
+// to mean "true".
+
 static int
 check_str_pref (char *var)
 {
@@ -393,7 +397,7 @@
     kludge++;
   else
     {
-      warning ("invalid value specified for struct_levels_to_print");
+      gripe_invalid_value_specified ("struct_levels_to_print");
       status = -1;
     }
 
@@ -565,7 +569,7 @@
     kludge++;
   else
     {
-      warning ("invalid value specified for output_max_field_width");
+      gripe_invalid_value_specified ("output_max_field_width");
       status = -1;
     }
 
@@ -595,7 +599,7 @@
     kludge++;
   else
     {
-      warning ("invalid value specified for output_precision");
+      gripe_invalid_value_specified ("output_precision");
       status = -1;
     }
 
@@ -625,7 +629,7 @@
     kludge++;
   else
     {
-      warning ("invalid value specified for save_precision");
+      gripe_invalid_value_specified ("save_precision");
       status = -1;
     }
 
@@ -645,7 +649,7 @@
     }
   else
     {
-      warning ("invalid value specified for EDITOR");
+      gripe_invalid_value_specified ("EDITOR");
       status = -1;
     }
 
@@ -665,7 +669,7 @@
     }
   else
     {
-      warning ("invalid value specified for default_save_format");
+      gripe_invalid_value_specified ("default_save_format");
       status = -1;
     }
 
@@ -685,7 +689,7 @@
     }
   else
     {
-      warning ("invalid value specified for gnuplot_binary");
+      gripe_invalid_value_specified ("gnuplot_binary");
       status = -1;
     }
 
@@ -705,7 +709,7 @@
     }
   else
     {
-      warning ("invalid value specified for IMAGEPATH");
+      gripe_invalid_value_specified ("IMAGEPATH");
       status = -1;
     }
 
@@ -725,7 +729,7 @@
     }
   else
     {
-      warning ("invalid value specified for INFO_FILE");
+      gripe_invalid_value_specified ("INFO_FILE");
       status = -1;
     }
 
@@ -745,7 +749,7 @@
     }
   else
     {
-      warning ("invalid value specified for LOADPATH");
+      gripe_invalid_value_specified ("LOADPATH");
       status = -1;
     }
 
@@ -765,7 +769,7 @@
     }
   else
     {
-      warning ("invalid value specified for PAGER");
+      gripe_invalid_value_specified ("PAGER");
       status = -1;
     }
 
@@ -785,7 +789,7 @@
     }
   else
     {
-      warning ("invalid value specified for PS1");
+      gripe_invalid_value_specified ("PS1");
       status = -1;
     }
 
@@ -805,7 +809,7 @@
     }
   else
     {
-      warning ("invalid value specified for PS2");
+      gripe_invalid_value_specified ("PS2");
       status = -1;
     }
 
@@ -825,7 +829,7 @@
     }
   else
     {
-      warning ("invalid value specified for PS4");
+      gripe_invalid_value_specified ("PS4");
       status = -1;
     }
 
@@ -845,7 +849,7 @@
     }
   else
     {
-      warning ("invalid value specified for PWD");
+      gripe_invalid_value_specified ("PWD");
       status = -1;
     }