mktables: Handle Unicode 16.0 DoNotEmit.txt

We handle it by ignoring this file, new to Unicode 16.0.

It consists of lists of characters that, to put it less delicately than
Unicode would like, they regret creating.

But there are no rules associated with them.  It would be nice to have a
\p{DoNotEmit} property so that applications could handle situations
where this occurs.  But I'm fearful that if we did something like this,
that Unicode would later come up with something that had the same
intention but would be subtly or unsubtly different.

That has happened before, to our detriment.

So I think we should wait to see what they do do, in future releases.

Author: khwilliamson

charclass_invlists.inc

@@ -436055,7 +436055,7 @@ static const U8 WB_table[23][23] = {
  * 3f4f32ed2a577344a508114527e721d7a8b633d32f38945d47fe0c743650c585 lib/unicore/extracted/DLineBreak.txt
  * 710abf2d581ac9c57f244c0834f9d9969d9781e0396adccd330eaae658ac7d6b lib/unicore/extracted/DNumType.txt
  * 6bd30f385f3baf3ab5d5308c111a81de87bea5f494ba0ba69e8ab45263b8c34d lib/unicore/extracted/DNumValues.txt
- * a1534d11ec6bef256d1829e9fd74c2202ed7f1475ae3c7659d2566e92c7e0f02 lib/unicore/mktables
+ * 2851ec4057abad0019e802bee35d17b13a95b75f7b72651edd27c6e31d527fac lib/unicore/mktables
  * 55d90fdc3f902e5c0b16b3378f9eaa36e970a1c09723c33de7d47d0370044012 lib/unicore/version
  * 0a6b5ab33bb1026531f816efe81aea1a8ffcd34a27cbea37dd6a70a63d73c844 regen/charset_translations.pl
  * c7ff8e0d207d3538c7feb4a1a152b159e5e902d20293b303569ea8323e84633e regen/mk_PL_charclass.pl

lib/unicore/mktables

@@ -19884,6 +19884,12 @@ my @input_file_objects = (
                     Skip => $Unused_Skip,
                     UCD => 0,
                    ),
+    Input_file->new('DoNotEmit.txt', v16.0.0,
+                    # Advice about characters that are unwise to create; not
+                    # any properties, though we could create some.
+                    Skip => $Unused_Skip,
+                    UCD => 0,
+                   ),
 );
 
 # End of all the preliminaries.

lib/unicore/uni_keywords.pl

@@ -78,7 +78,7 @@
  * 3f4f32ed2a577344a508114527e721d7a8b633d32f38945d47fe0c743650c585 lib/unicore/extracted/DLineBreak.txt
  * 710abf2d581ac9c57f244c0834f9d9969d9781e0396adccd330eaae658ac7d6b lib/unicore/extracted/DNumType.txt
  * 6bd30f385f3baf3ab5d5308c111a81de87bea5f494ba0ba69e8ab45263b8c34d lib/unicore/extracted/DNumValues.txt
- * a1534d11ec6bef256d1829e9fd74c2202ed7f1475ae3c7659d2566e92c7e0f02 lib/unicore/mktables
+ * 2851ec4057abad0019e802bee35d17b13a95b75f7b72651edd27c6e31d527fac lib/unicore/mktables
  * 55d90fdc3f902e5c0b16b3378f9eaa36e970a1c09723c33de7d47d0370044012 lib/unicore/version
  * 0a6b5ab33bb1026531f816efe81aea1a8ffcd34a27cbea37dd6a70a63d73c844 regen/charset_translations.pl
  * c7ff8e0d207d3538c7feb4a1a152b159e5e902d20293b303569ea8323e84633e regen/mk_PL_charclass.pl