Re: Bugs in remove-list-of-text-properties and a patch [WAS: before-change-functions called twice at yank]

[Richard Stallman]

              if (! interval_has_some_properties_list (properties, i))
    !       if (modified)
    !         {
    !           if (BUFFERP (object))
    !             signal_after_change (XINT (start), XINT (end) - XINT (start),
    !                                  XINT (end) - XINT (start));

I'm not confident about that code.  It runs the after-change hook, but
in this case, where is the before-change hook run?