[Toybox] [PATCH] Use NULL rather than 0 in vargs. (Rob Landley)

[Rob Landley]

It's _really_ hard to figure out which parts of this are quoted and
which parts are replies...

On 12/10/2017 07:29 PM, scsijon wrote:
> 
> 
> On 12/11/2017 08:20 AM, toybox-request at lists.landley.net wrote:
> One of the reasons I hadn't done stty yet is I'm not sure how much of
> the serial settings are relevant in 2017. Every serial port in the world
> was 8-n-1 already in the 80's, so the even/odd/parity stuff is a
> historical relic.
> 
> No, it's still used in a lot of thermal, flood and security sensors and
> 'gear' like lift switching mechanisms in old pre 2000 buildings and a
> lot of it is still 7 x 2. They often work on the principle of 'if it
> ain't broken don't touch it', it's often a simple analog>digital>analog
> system. Changing a building over is VERY expensive!

Ah, I guess that second paragraph is the new bit?

Good to know, thanks.

(Although I've seen elevators refurbished, usually because the old one
broke. Usually just the control circuitry, not the plumbing, but it's
the control circuitry that handles this. Still, old gear still in use.
Got it.)

Rob

P.S. I may have a slightly skewed opinion of this stuff because as a
teenager I was in an elevator (at either the Frankin and Marshall or
Farleigh Dickinson campus of CTY) that tried to go up a floor higher
than the building it was in had, and banged against its top end stop a
half-dozen times before opening the doors and letting us out. Happily,
we didn't plummet to our deaths. Years later there was the hydraulic
elevator at (the year 2?) Penguicon hotel that worked fine under normal
load but by noon each day of the convention it had overheated to the
point the hydraulic fluid leaked through the seals and then it gradually
lost the ability to go to the higher floors (and got slower and slower
going up) until it could only go between the ground and second floors
and then got an "out of order" sign on it until it had cooled down
again. But I didn't ride in that one because it was out of order every
time I tried, we all just took the stairs, the building was only like 4
stories...)