The colon separator for lists of curves doesn’t work in some commands

[rusu24edward]

Ex: xmm, or xminmax
Audit the commands and add this feature to all the commands where it makes sense.

Put the try block on the inside of the curve loop.

[rusu24edward]

Special attention should be paid to cases where curves have been deleted, so the list becomes like A, B, E, G. Does the colon operator work then?

[rusu24edward]

With curves A, B, E:

• dupx A:E fails completely but A:B succeeds
• del A:E deletes A and B but not E
• markerfacecolor A:E colors A and B but not E
• markeredgecolor A:E colors A and B but not E
• random A:E randomizes A and B but not E
• rev A:E reverses A and B but not E
• sort A:E fails completely, but sort A:B succeeds
• subsample A:E and A:B fails, only works with a single curve
• xindex A:E fails but A:B works
• xminmax A:E and A:B fails, only works with a single curve
• yminmax A:E and A:B fails, only works with a single curve
• add A:E fails completely but add A:B works -- requires reworking the addition operation refactor addition, subtraction, multiply, divide operation #251
• subtract A:E fails completely, but subtract A:B works -- requires reworking the subtraction operation refactor addition, subtraction, multiply, divide operation #251
• mult A:E fails completely, but mult A:B works -- requires reworking the multiply operation refactor addition, subtraction, multiply, divide operation #251
• divide A:E fails completely, but divide A:B works -- requires reworking the division operation refactor addition, subtraction, multiply, divide operation #251
• log A:E fails completely, but log A:B works
• logx A:E fails completely, but logx A:B works
• log10 A:E fails completely, but log10 A:B works
• log10x A:E fails completely, but log10x A:B works
• makeintensive A:E fails completely, but makeintensive A:B works
• makeextesive A:E fails completely, but makeextensive A:B works
• max A:E fails completely, but max A:B works
• smooth A:E smooths A and B but not E. It splits out an error anytime it is used with a curve list.
• disp A:E prints out A and B but not E
• dispx A:E prints out A and B but not E
• getdomain A:E prints out A and B but not E
• getrange A:E prints out A and B but not E
• stats A:E prints out A and B but not E and no error msg
• movefront A:E completely fails, but movefront A:B works

[rusu24edward]

copy work because it adds curves as it goes through the loop of curves. For example, A B and E exist. When copy goes through the loop, it copies A creating C, copies B creating D, then it copies C, which was just created, creating F, etc. So this is a bigger issue with the curve list than I originally thought.

[rusu24edward]

Some commands that ought to work with curve lists:
label <curve-list> [<new-labels>]
getattributes
getlabel
getnumpoints
getymin
getymax

Captured in #253

[rusu24edward]

• Correct print_error clause and just put that under the generic except.