Add some textsec-restriction-level comments

* lisp/international/textsec.el (textsec-restriction-level): Add
comment about source of the list of languages.

diff --git a/lisp/international/textsec.el b/lisp/international/textsec.el
index fc809d52c1de658d7b203baaf609bf838de578f5..35da871907b662ac386ee992175c1b62acadca80 100644 (file)
--- a/lisp/international/textsec.el
+++ b/lisp/international/textsec.el
@@ -114,6 +114,9 @@ Levels are (in order of restrictiveness) `ascii-only',
     'highly-restrictive)
    ((and (= (length scripts) 2)
          (memq 'latin scripts)
+         ;; This list comes from
+         ;; https://www.unicode.org/reports/tr31/#Table_Recommended_Scripts
+         ;; (but is without latin, cyrillic and greek).
          (seq-intersection scripts
                            '(arabic
                              armenian