Re: Extent boundaries inconsistent w.r.t. extent properties
Nix <nix(a)esperi.demon.co.uk> wrote:
On Sat, 13 Apr 2002, Michael Toomim yowled:
> I don't quite understand what you mean here. Do you want the
> begin-glyph of an extent to be visible even if the extent has the
> 'invisible' property set to t? Are you saying that you'd like glyphs
> to always be visible?
That is useful, yes: it lets us easily emulate the `display' property,
which replaces the range of text covered by an overlay temporarily with
an image.
What you probably want is the glyph visibility to be dependent upon
the "openness" of the extent endpoints. If the extent's
"start-open"
property is non-nil, then the glyph is displayed even if the extent is
invisible; if "start-open" is nil (the extent is closed), then the glyph
is not displayed. Similarly for the endpoint.
Comments?
--
Darryl Okahata
darrylo(a)soco.agilent.com
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