diff -Nru bc-1.06.orig/bc/load.c bc-1.06/bc/load.c
--- bc-1.06.orig/bc/load.c	2000-09-13 12:22:38.000000000 -0600
+++ bc-1.06/bc/load.c	2009-08-20 17:35:29.000000000 -0600
@@ -188,10 +188,13 @@
 		  if (*str == '.')
 		    addbyte (*str++);
 		  else
-		    if (*str >= 'A')
+                    if ((*str >= 'a') && (*str <='f')) {
+		      addbyte (*str++ + 10 - 'a');
+                    } else if (*str >= 'A') {
 		      addbyte (*str++ + 10 - 'A');
-		    else
+                    } else {
 		      addbyte (*str++ - '0');
+                    }
 	      }
 	  }
 	else
diff -Nru bc-1.06.orig/bc/scan.l bc-1.06/bc/scan.l
--- bc-1.06.orig/bc/scan.l	2000-09-13 12:25:47.000000000 -0600
+++ bc-1.06/bc/scan.l	2009-08-20 17:35:29.000000000 -0600
@@ -143,7 +143,7 @@
 
 /* Definitions for readline access. */
 extern FILE *rl_instream;
-_PROTOTYPE(char *readline, (char *));
+_PROTOTYPE(char *readline, (const char *));
 
 /* rl_input puts upto MAX characters into BUF with the number put in
    BUF placed in *RESULT.  If the yy input file is the same as
@@ -216,8 +216,8 @@
 #endif
 
 %}
-DIGIT [0-9A-F]
-LETTER [a-z]
+DIGIT [0-9A-Fa-f]
+LETTER [g-z]
 %s slcomment
 %%
 "#"		{
@@ -311,7 +311,7 @@
 	      }
 	  }
       }
-[a-z][a-z0-9_]* { yylval.s_value = strcopyof(yytext); return(NAME); }
+[g-z][g-z0-9_]* { yylval.s_value = strcopyof(yytext); return(NAME); }
 \"[^\"]*\"  {
  	      unsigned char *look;
 	      int count = 0;
diff -Nru bc-1.06.orig/bc/storage.c bc-1.06/bc/storage.c
--- bc-1.06.orig/bc/storage.c	2000-09-13 12:26:15.000000000 -0600
+++ bc-1.06/bc/storage.c	2009-08-20 17:35:29.000000000 -0600
@@ -55,8 +55,8 @@
   /* Other things... */
   ex_stack = NULL;
   fn_stack = NULL;
-  i_base = 10;
-  o_base = 10;
+  i_base = 16;
+  o_base = 16;
   scale  = 0;
 #if defined(READLINE) || defined(LIBEDIT)
   n_history = -1;	
diff -Nru bc-1.06.orig/bc/util.c bc-1.06/bc/util.c
--- bc-1.06.orig/bc/util.c	2000-09-13 12:29:19.000000000 -0600
+++ bc-1.06/bc/util.c	2009-08-20 17:34:50.000000000 -0600
@@ -642,7 +642,7 @@
 void
 show_bc_version()
 {
-  printf("%s %s\n%s\n", PACKAGE, VERSION, BC_COPYRIGHT);
+  printf("%s %s with friendly hexadecimal hack\n%s\n", PACKAGE, VERSION, BC_COPYRIGHT);
 }