>> > Having the option to sort by names within each block sounds nice to me.
>>
>> Oh, then sorting order of sections would need own option.  Currently
>> sections are sorted by section names (i.e. mostly by script names
>> alphabetically, e.g. "adlam", "aegean-number", "ahom", etc.),
>> but a new option could sort them by their boundary codepoints
>> (i.e. "basic-latin", "latin-supplement", "latin-extended"),
>> so now options are going out of control :)
>
> I think we can get away with only one sorting order for sections:
> alphabetically.  Most tools I use that show large regions of Unicode
> space do that, and I find it very convenient for quickly finding the
> block I need without having to remember its place in the codepoint
> order (which is quite random).

Then customization will be much simpler with just 2 variables
'read-char-by-name-sort' and 'read-char-by-name-group':