query_ed_mode
NAME
query_ed_mode() - find out the status of the current ed session
SYNOPSIS
int query_ed_mode()
DESCRIPTION
Finds the status of the ed session for the current object, if one
exists. It returns:
0 - the current object is at a normal ed prompt (':')
-1 - the current object isn't in ed
-2 - the current object is at the more prompt in the middle of help
>0 - the object is at a prompt for a line. The number is the line
number.