thoughts on NO_COLOR

[Pádraig Brady]

I just noticed some de facto treatment of the NO_COLOR env var.
https://no-color.org/

I was considering having ls --color=auto honor this, but then thought
it is not actually needed in ls, since we give fine grained
control over the colors / styles used.

For example one might very well always want at least some distinguishing
of files and directories, with bold / bright etc.
which can be achieved now with LS_COLORS.

Or looking at it another way, ls is ubiquitous enough
that it's probably already color configured as the user desires,
and having ls honor the less fine grained NO_COLOR flag,
would result in less flexibility.

cheers,
Pádraig