Re: Deffering redisplay in COMINT

[Stefan Monnier]

> The pre hook only activates if the mode is enabled and truncate-lines
> is set.  When active, it disables auto-hscroll-mode.  It then appends 
> the output text to a temporary buffer and then returns a window's
> width worth of characters of each line in the temp buffer to 
> be written to the output buffer.  The output appears to fill each 
> line without the display slowdown due to long displayed lines.
> And because hscroll is turned off, the text merely flows up the
> screen quickly.

Have you tried the (presumably) simpler approach of only inserting the
text one line at a time, i.e. accumulate the output in some undisplayed
"buffer area" (can be a buffer, a string, or a list of strings, this
last choice being probably the most efficient) until you see a \n and
then insert that text (upto and including the \n, so the cursor stays in
column 0 and doesn't risk triggering auto-hscroll-mode) while keeping
the rest in the "buffer area"?


        Stefan