Request: flag for 1-indexing

[AndydeCleyre]

choose helpfully offers compatibility with Python's style of 0-indexing, inclusive start, and exclusive end, with -x (which the docs make sound like it uses an exclusive range, while it uses an inclusive start):

$ s=(1 2 3 4 5 6)
$ print $s | choose 2:4
3 4 5
$ print $s | choose -x 2:4
3 4

But when I'm in a shell, using ZSH tools, cut, etc., I expect 1-indexing, inclusive start, inclusive end:

$ s=(1 2 3 4 5 6)
$ print $s[2,4]
2 3 4
$ print $s | cut -d' ' -f2-4
2 3 4

Since the context I'd use choose in is the same I'd use ZSH and cut in, it would lessen the mental load and chance of user error if I could get it to match the indexing and slicing of ZSH (default config) and cut.

Here's the same data as a table, where s is an array of the numbers 1 through 6:

Context	Command	Result	Index	Start	End
python	s[2:4]	(3, 4)	0	Inclusive	Exclusive
zsh	print $s[2,4]	2 3 4	1	Inclusive	Inclusive
cut	print $s | cut -d' ' -f2-4	2 3 4	1	Inclusive	Inclusive
choose	print $s | choose 2:4	3 4 5	0	Inclusive	Inclusive
choose	print $s | choose -x 2:4	3 4	0	Inclusive	Exclusive

[theryangeary]

This is reasonable. I will add it.

[theryangeary]

Added in develop.