lpl@cunixb.cc.columbia.edu (Leonard P Lidov) (03/01/91)
Can any PC scheme user shed light on the following problem: It seems that roughly half the time, when I enter edwin from the main buffer, load a file and then send either part or all of it off to be evaluated (with a Meta-ctrl-x or a Meta-o), I am unable to return to my edwin buffer. I type (EDWIN) and the machine pauses for a few seconds, and resets EDWIN altogether--I've even lost some changes to buffers this way. This only happens the FIRST time that I go back and forth--that is to say, that if I manage to get back and forth ONCE successfully, the problem does not reccur again during that session. Thus far, I have not been able to discern any pattern whatsoever which might explain what causes this. I even made my neighbor watch me play with it until I had the problem, so that someone else could have a chance to see what I might be doing differently from one time to the next. (My neighbor doesn't know Scheme, but is a fairly experienced programmer.) The section on edwin in my PC Scheme, Student Edition, reference manual, states explicitly that: "EDWIN may be reentered later [after moving into the main SCHEME buffer] to resume editing at the same place." The manual does note that passing a large datastructure to the main buffer may be a problem if there isn't much disk space--but this certainly is notmy problem. The problem also seems to pay no heed to whether debug-mode is set on or off, and is equally indifferent to which screen mode I'm using (full or split-screen display). Since I'm confident that my difficulty is relatively obscure, replies by mail ought to suffice (though I'm curious as to whether anyone else has had this problem). Thanks, Len Lidov "All history is the history of CS" Marx