Problem
When run the script in next URL with PropList.txt on unicode.org, result file did not contain character properties for ordinary characters like 'x', 'y', or 'z'. http://satob.hatenablog.com/entry/2017/11/21/002957
Reason
PropList.txt does not cover all the characters in the Unicode Standard. The properties for all the characters are in Scripts.txt.
Note there are no mention for Scripts.txt on UNICODE CHARACTER DATABASE page.
Solution
Use Scripts.txt rather than PropList.txt.