Did you mean 2.2.0, not 1.2.0?

I think this is several days of work...

Eh? This is pango. 1.2.0 is the next API-addition milestone.
There is no 2.2.0 milestone.

Oh, right.

Anyhow, I'm skeptical about making GTK 2.2 timeframe with this, though 
I would like to do so. ;-)

I doubt it's even one day of work... I'd guess a few hours; 
it's a lot simpler to do inside PangoLayout. And considering how
gross the stuff people have done to work around it is, it's pretty 
high priority for me to do.

(If you want to handle things like ellipsing wrapped paragraphs
then it could get a little tricky to figure out how things _should_
work, but that's really not necessary for what you typically need.)

[ On later investigation, my "few hours" estimate turned
  into "a week or so" ]

Another thing to think about here is the interaction of
ellipsation with selection or cursor position for a 
selectable label - it may be that some portion of the
label is "more important" to show than another portion.

See bug 109473.

Wed Jul 14 17:47:38 2004  Owen Taylor  <otaylor@redhat.com>
                                                                                 
        * pango/pango-layout.[ch] pango/ellipsize.c pango/Makefile.am:
        Add PangoEllipsizeMode, pango_layout_set_ellipsize(), implement.
        (#59071)
                                                                                 
        * pango/pango-layout-private.h pango/pango-layout.c:
        Move PangoLayout structure into a separate header file.
                                                                                 
        * pango/pango-glyph-item.[ch]: Add pango_glyph_item_free().
                                                                                 
        * pango/pango-glyph-item-private.h pango/pango-glyph-item.c:
        Internally export the PangoGlyphItemIter functionality.
                                                                                 
        * examples/renderdemo.[ch]: Add --ellipsize option.

In the end, took about a day of work. I just punted on the whole
selection / cursor position issue.

Filed a couple of followup issues:

 bug 147607: Cursive joining and ellipsization
 bug 147608:  Customizing ellipsization behavior