> > 1. `x-get-selection': Doc string refers you to
> > `selection-converter-alist', without which you cannot understand
> > parameter DATA-TYPE.
> >
> > 2. `selection-converter-alist': There is NO doc string.  Please
> > add one and please make sure it describes (or links to the doc
> > for) the various `xselect-convert-to-*' functions that one sees
> > in the value of `selection-converter-alist'.
> 
> This has a huge doc string now, so this seems to be fixed.

By "this" you apparently mean `x-get-selection'.  So yes, part
1 of this bug has been fixed.  But part 2 has not been fixed.
`selection-converter-alist' certainly does not have "a huge doc
string now".  Reopening.

Attached is the current select.el from
http://bzr.savannah.gnu.org/lh/emacs/trunk/annotate/head:/lisp/select.el

There IS NO DOC STRING for `selection-converter-alist'.

And in my build from 2014-02-07, this is what C-h v says:

,----
| selection-converter-alist's value is shown below.
| 
| Documentation:
| Not documented as a variable.
| 
| Value: ((TEXT . xselect-convert-to-string)
|  (COMPOUND_TEXT . xselect-convert-to-string)
|  (STRING . xselect-convert-to-string)
|  (UTF8_STRING . xselect-convert-to-string)
|  (TARGETS . xselect-convert-to-targets)
|  (LENGTH . xselect-convert-to-length)
|  (DELETE . xselect-convert-to-delete)
|  (FILE_NAME . xselect-convert-to-filename)
|  (CHARACTER_POSITION . xselect-convert-to-charpos)
|  (LINE_NUMBER . xselect-convert-to-lineno)
|  (COLUMN_NUMBER . xselect-convert-to-colno)
|  (OWNER_OS . xselect-convert-to-os)
|  (HOST_NAME . xselect-convert-to-host)
|  (USER . xselect-convert-to-user)
|  (CLASS . xselect-convert-to-class)
|  (NAME . xselect-convert-to-name)
|  (ATOM . xselect-convert-to-atom)
|  (INTEGER . xselect-convert-to-integer)
|  (SAVE_TARGETS . xselect-convert-to-save-targets)
|  (_EMACS_INTERNAL . xselect-convert-to-identity))
`----