regnodes.h: Add new set of defines

There currently is a set of defines for switching on the op code of the
regnode, and another set for switching on that plus the utf8ness of both
the target and pattern.  This latter set is useful in one routine in
regexec.c where all three are important.  It allows fewer branches to
have to be done by encoding where to go into the case: value.

There are other similar switches in regexec.  The one in regrepeat()
doesn't care very much about the utf8ness of the pattern.

This commit adds a third set of defines for use by that switch, which
will be used by the next commit.

regen/regcomp.pl

@@ -356,8 +356,9 @@ sub print_state_defs {
      .  " $max_name_width; then re-run"  if $base_name_width < $max_name_width;
 
     print $out <<EOT;
-/* -- For regexec.c to switch on target being utf8 (t8) or not (tb, b='byte');
- *    same with pattern (p8, pb) -- */
+/* -- For regexec.c to switch on target being utf8 (t8) or not (tb, b='byte'); */
+#define with_t_UTF8ness(op, t_utf8) (((op) << 1) + (cBOOL(t_utf8)))
+/* -- same, but also with pattern (p8, pb) -- */
 #define with_tp_UTF8ness(op, t_utf8, p_utf8)                        \\
 \t\t(((op) << 2) + (cBOOL(t_utf8) << 1) + cBOOL(p_utf8))
 
@@ -382,15 +383,17 @@ sub print_state_def_line
 {
     my ($fh, $name, $id, $comment) = @_;
 
-    # The sub-names are like '_tb_p8' = 6 chars wide
+    # The sub-names are like '_tb' or '_tb_p8' = max 6 chars wide
     my $name_col_width = $base_name_width + 6;
     my $base_id_width = 3;  # Max is '255' or 3 cols
+    my $mid_id_width  = 3;  # Max is '511' or 3 cols
     my $full_id_width = 3;  # Max is '1023' but not close to using the 4th
 
     my $line = "#define " . $name;
     $line .= " " x ($name_col_width - length($name));
 
     $line .= sprintf "%*s", $base_id_width, $id;
+    $line .= " " x $mid_id_width;
     $line .= " " x ($full_id_width + 2);
 
     $line .= "/* ";
@@ -419,19 +422,35 @@ sub print_state_def_line
 
     print $fh $line;
 
-    # And add the 4 subsidiary #defines used when switching on
+    # And add the 2 subsidiary #defines used when switching on
+    # with_t_UTF8nes()
+    my $with_id_t = $id * 2;
+    for my $with (qw(tb  t8)) {
+        my $with_name = "${name}_$with";
+        print  $fh "#define ", $with_name;
+        print  $fh " " x ($name_col_width - length($with_name) + $base_id_width);
+        printf $fh "%*s", $mid_id_width, $with_id_t;
+        print  $fh " " x $full_id_width;
+        printf $fh "  /*";
+        print  $fh " " x (4 + 2);  # 4 is width of 0xHH that the base entry uses
+        printf $fh "0x%03x */\n", $with_id_t;
+
+        $with_id_t++;
+    }
+
+    # Finally add the 4 subsidiary #defines used when switching on
     # with_tp_UTF8nes()
-    my $with_id = $id * 4;
+    my $with_id_tp = $id * 4;
     for my $with (qw(tb_pb  tb_p8  t8_pb  t8_p8)) {
         my $with_name = "${name}_$with";
         print  $fh "#define ", $with_name;
-        print  $fh " " x ($name_col_width - length($with_name) + $base_id_width);
-        printf $fh "%*s", $full_id_width, $with_id;
+        print  $fh " " x ($name_col_width - length($with_name) + $base_id_width + $mid_id_width);
+        printf $fh "%*s", $full_id_width, $with_id_tp;
         printf $fh "  /*";
         print  $fh " " x (4 + 2);  # 4 is width of 0xHH that the base entry uses
-        printf $fh "0x%03x */\n", $with_id;
+        printf $fh "0x%03x */\n", $with_id_tp;
 
-        $with_id++;
+        $with_id_tp++;
     }
 
     print $fh "\n"; # Blank line separates groups for clarity