On Wed, 31 May 2006 09:50:35 -0400, Adrian Robert
<address@hidden> said:
One use of the termhooks.h EVENT_INIT() macro in macterm.c also takes
care to init the event's 'arg' to "Qnil", explaining with this
comment:
/* It is necessary to set this (additional) argument slot
of an
event to nil because keyboard.c protects incompletely
processed event from being garbage collected by placing them
in the kbd_buffer_gcpro vector. */
However, according to the ChangeLog this vector was removed on
2004-01-21 in response to changes on 2003-06-15, including the very
introduction of the EVENT_INIT() macro.
I removed this comment that is referring to a nonexistent variable
from macterm.c.
My question is, is the additional call to set 'arg' to "Qnil", found
in w32, mac, and x terms, still needed? I notice that macterm does
not have it for other calls to EVENT_INIT. Other terms only use
EVENT_INIT once.
Although bzero'ed Lisp_Object corresponds to integer 0 and thus it
does not leads to a real problem, I think we should not rely on this.
So I added some code to set `arg' to Qnil in macterm.c.