On Monday 08 June 2015 07:14 PM, Stefan Monnier wrote:

>>     4. (delete-dups (font-family-list)) STILL has duplicate entries.
> That sounds very odd.
> 
>> > See the attached screenshot.

> That doesn't show the result of delete-dups itself, so it's hard to
> judge what this really means.

See the attached .el files.

1. font-family-list.el               <-- M-: (font-family-list)
2. delete-dups-font-family-list.el   <-- M-: (delete-dups
(font-family-list))

FYI,

  (length (font-family-list))                = 349
  (length (delete-dups (font-family-list)))  = 297