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| author | Jim Blandy <jimb@redhat.com> | 1993-05-14 14:43:00 +0000 |
|---|---|---|
| committer | Jim Blandy <jimb@redhat.com> | 1993-05-14 14:43:00 +0000 |
| commit | b71a12ded856414d264acf9a27a36ba173b9a2b2 (patch) | |
| tree | 7647e48fc3ad8e61a72918cd2479f7303cf1d776 /src/print.c | |
| parent | efa6962c19ae6fb83ee591b7118fb7762921087d (diff) | |
| download | emacs-b71a12ded856414d264acf9a27a36ba173b9a2b2.tar.gz | |
* lisp.h (Lisp_Overlay): New tag.
(OVERLAYP): New predicate.
(CHECK_OVERLAY): New type-checker.
(Qoverlayp): New extern declaration.
* buffer.c (Foverlayp): New function.
(Qoverlayp): New atom.
(overlays_at, recenter_overlay_lists): Abort if we encounter an
invalid overlay.
(syms_of_buffer): defsubr Soverlayp; initialize Qoverlayp.
(Fdelete_overlay): Set the overlay's markers to point nowhere.
Use CHECK_OVERLAY instead of signalling a special error.
(Fmove_overlay, Foverlay_put): Use CHECK_OVERLAY instead of
signalling a special error.
(Foverlay_get): Use CHECK_OVERLAY.
* fns.c (internal_equal): Define this for overlays.
* buffer.h (OVERLAY_VALID): Define in terms of OVERLAYP.
* print.c (print): Give overlays their own print syntax.
* alloc.c (mark_object): Treat overlays like conses.
Diffstat (limited to 'src/print.c')
| -rw-r--r-- | src/print.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/src/print.c b/src/print.c index ba41e46454e..23901175de1 100644 --- a/src/print.c +++ b/src/print.c @@ -952,6 +952,23 @@ print (obj, printcharfun, escapeflag) } PRINTCHAR ('>'); break; + + case Lisp_Overlay: + strout ("#<overlay ", -1, printcharfun); + if (!(XMARKER (OVERLAY_START (obj))->buffer)) + strout ("in no buffer", -1, printcharfun); + else + { + sprintf (buf, "from %d to %d in ", + marker_position (OVERLAY_START (obj)), + marker_position (OVERLAY_END (obj))); + strout (buf, -1, printcharfun); + print_string (XMARKER (OVERLAY_START (obj))->buffer->name, + printcharfun); + } + PRINTCHAR ('>'); + break; + #endif /* standalone */ case Lisp_Subr: |