The most common control circuit has the button triggering a relay which then powers its own trigger until the circuit is interrupted elsewhere; this isn't compatible with the same button cancelling the call.

On the pop-out controls I mentioned in a sibling comment, the relay is the button, and you can pull it out to cancel.

The 90s called, they'd like a word.

His link includes procedures, which suggest he was testing the hardness of some surface coating or similar:

> For the pencil hardness test, reference ASTM D3363, pencils of increasing hardness values are moved over the surface in a precisely defined way until one lead damages the surface. Surface Hardness is defined by the hardest pencil grade which just fails to damage the surface.

> Observe the pencil track. Sufficient pressure must have been applied either to cut or damage the coating or to crush the lead pencil point.

> If neither coating damage or pencil point crushing is observed, repeat the test until a definite observation is made.

> If scratching or damage of the surface occurs, proceed with the next softer pencil grade and repeat the testing process until a pencil lead grade is found which crushes and does not damage the coating.

> If crushing of the hardest lead should occur, the coating is therefore extremely hard and is beyond the measuring range of this test

Their discomfort at being reminded of the real world consequences of their actions doesn't make what you said stupid.

“as part of a sprawling operation that seeks to defraud online merchants and advertising networks.”

Oh no! Not the advertising networks!

But how will my PM get his fancy overlay of our website with the heatmap of user clicks and dwells to grossly misinterpret?

git add -p or git add ‹file› -p

Nope. That doesn't offer per-line .. or does it ?

e in interactive mode lets you directly edit the patch line by line, so it depends how you count popping open an editor

lol jealous hater

Huh?

And?

Currently patents are predominantly used to prevent interoperability and impose costs.

It comes with the territory; IMO if you don't occasionally have a few comments go negative, you're probably not saying anything of value.