RE: [External] : Re: [PATCH] color-hsv-to-rgb

[Drew Adams <drew.adams@oracle.com>]

> It is hard for anyone but you to know what
> is your POV on this issue.

I don't have a POV on what else in `hexrgb.el'
might be missing from `color.el' and might want
to be added now by Emacs Dev.  And that's what
I said, at the outset of my reply to Stefan's
question:

  "Sorry, but I don't know"

All of hexrgb.el was considered when `color.el'
was being created, including `hexrgb-hsv-to-rgb'.
Whatever was wanted was used, and that didn't
include `hexrgb-hsv-to-rgb'.

I mentioned that function in this thread only
because of the thread Subject.  Would you have
preferred that I not mention it?  I figured
its code might help in some way, as well as
the fact that I (too) think such a function is
useful.  The latter was the main reason I wrote
to the thread: to say +1 to Jim's +1 to Dov's
request.  That's the main msg: it's useful.

There's no need for me to guess what else you
might be interested in.  If you're interested,
just take a look at the available functions.
It's not like there are zillions of them, and
they're all handily listed in one place, with
clear names.

As I said, I haven't looked at this code since
2018, and likewise `color.el'.  If someone is
interested in investigating the differences
they are as capable as I am for that.

And again, I have no POV about "main things 
besides `color-hsv-to-rgb'".
___

A quick look now at `color.el' shows it's
mostly about color conversion, not color
modification, HSL being the sole exception,
and only for S and L. `hexrgb.el' has eight
functions for incrementing/decrementing:

  +/- R, G, B individually and together
  +/- H, S, V individually
  +/- hex digits together

Why `color.el' has separate functions (8 of
them!) for the two directions to increment
only S and L is a mystery.  With `hexrgb.el',
just use a negative increment to decrement.

`hexrgb.el' also has functions to modify a
color by complementing only one component: red/green/blue/hue/saturation/value.  E.g.,
complementing hue doesn't change saturation
or value.

  (hexrgb-hue-complement "LightBlue")
    ; => "#E6E5BBBAADAC"

HTH.