On 2016-07-14 23:10, Michael Heerdegen wrote:
> I also wonder how the interactive spec should be - how the prefix arg
> should be used.  We have now three parameters that `sort-lines-collate'
> would control: REVERSE, LOCALE and IGNORE-CASE.  Maybe all prefix args
> just turn on REVERSE (for compatibility with `sort-lines'), with the
> exception of C-u C-u that prompts for values of all of them...?

Sounds good.