Include all codepoints in the ABNF; add Other_Alphabetic

Per comments; also commit the script used to generate the ABNF ranges.
Probably want to replace that with something less, ehm, crap, so it's
easier for people to modify and run ... This was just quick and easy to
write for me now.

scripts/list-rng.zsh

@@ -0,0 +1,52 @@
+#!/bin/zsh
+set -euC
+
+IFS=$'\n'
+groups=(cat:Lu cat:Ll cat:Lt cat:Lm cat:Lo cat:Nd Other_Alphabetic)
+typeset -A names=(
+	cat:Lu           'Uppercase_Letter (Lu)'
+	cat:Ll           'Lowercase_Letter (Ll)'
+	cat:Lt           'Titlecase_Letter (Lt)'
+	cat:Lm           'Modifier_Letter (Lm)'
+	cat:Lo           'Other_Letter (Lo)'
+	cat:Nd           'Decimal_Number (Nd)'
+	Other_Alphabetic 'Other_Alphabetic'
+)
+for g in $groups; do
+	start=0
+	prev=0
+	indent='   '
+	g2=${g#cat:}
+	for (( i=1; i<=$#g2; i++ )); indent+=' '
+	l=$(( $#g2 + 2 ))
+	print '\n;' $names[$g]
+	print -n "$g2 = "
+	for line in $(uni -quiet print $g); do
+		line=(${(s: :)line})
+		if (( $prev == 0 )); then
+			prev=$line[3]
+			start=$line[3]
+			continue
+		fi
+		if (( $prev + 1 == $line[3] )); then
+			prev=$line[3]
+			continue
+		fi
+		if [[ $start != $prev ]]; then
+			x=$(print -f '%%x%x-%x / ' $start $prev)
+		else
+			x=$(print -f '%%x%x / ' $start)
+		fi
+		print -n $x
+		l=$(( l + $#x ))
+		if (( $l > 114 )); then
+			l=0
+			print
+			print -n $indent
+		fi
+
+		prev=$line[3]
+		start=$line[3]
+	done
+	print -f '%%x%x-%x\n' $start $prev
+done