Method from

app/src/main/java/eu/faircode/email/TupleKeyword.java:73–130

(Context context, Persisted data)

    }

    static List<TupleKeyword> from(Context context, Persisted data) {
        if (data.selected == null)
            data.selected = new String[0];
        if (data.available == null)
            data.available = new String[0];

        List<TupleKeyword> result = new ArrayList<>();

        List<String> all = new ArrayList<>();
        List<String> some = Arrays.asList(data.selected);
        List<String> selected = Arrays.asList(data.all_selected == null ? data.selected : data.all_selected);

        for (String keyword : selected)
            if (!all.contains(keyword))
                all.add(keyword);

        for (String keyword : data.available)
            if (!all.contains(keyword))
                all.add(keyword);

        SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);

        String global = prefs.getString("global_keywords", null);
        if (global != null)
            for (String kw : global.split(" "))
                if (!all.contains(kw))
                    all.add(kw);

        final Collator collator = Collator.getInstance(Locale.getDefault());
        collator.setStrength(Collator.SECONDARY); // Case insensitive, process accents etc

        Collections.sort(all, new Comparator<String>() {
            @Override
            public int compare(String k1, String k2) {
                k1 = prefs.getString("kwtitle." + k1, getDefaultKeywordAlias(context, k1));
                k2 = prefs.getString("kwtitle." + k2, getDefaultKeywordAlias(context, k2));
                return collator.compare(k1, k2);
            }
        });

        for (String keyword : all) {
            TupleKeyword k = new TupleKeyword();
            k.name = keyword;
            k.selected = selected.contains(keyword);
            k.partial = (k.selected && !some.contains(keyword));

            String c1 = "kwcolor." + keyword;
            String c2 = "keyword." + keyword; // legacy
            if (prefs.contains(c1))
                k.color = prefs.getInt(c1, Color.GRAY);
            else if (prefs.contains(c2))
                k.color = prefs.getInt(c2, Color.GRAY);

            result.add(k);
        }

        return result;
    }