Implement cat

[GrayJack]

This is a tracking issue for the cat utility.

Required options and flags in the POSIX standard:

• u (long: ¹)

Required extension options and flags:

• b (long: number-nonblank)
• e (long: ²)
• E (long: show-ends)
• n (long: number)
• s (long: squeeze_blank)
• T (long: show-tabs)
• t (long: ²)
• v (long: show-nonprinting)

Notes:
¹ : Long name not defined on other implementation of this utility. Implementer must choose a long name.
² : Short name (one letter) not defined on other implementation of this utility. Implementer must choose. a short name

References

POSIX standard text
FreeBSD Manual
NetBSD Manual
OpenBSD Manual
DragonFlyBSD Manual

Unresolved questions:

All extension options/flags required are only there because most implementations also do. But there is just another two extensions left for all major versions of the utility, -A, -B and -f. Should those last three be implemented as well?

History

-n, -b, -E and -s implemented by #106

[EduRenesto]

I'll do this one!

[argentite]

I want to work on this. Is supporting -b -n and -s enough?

[GrayJack]

@EduRenesto Are you still working on this?

[GrayJack]

I want to work on this. Is supporting -b -n and -s enough?

I require a minimum set of of flags that are common in major versions of coreutils (Linux, FreeBSD, NetBSD, OpenBSD, DragonflyBSD, Illumos/Solaris)* to consider the tool to be considered Done, but if needed, it can be made in several pull requests.

* If 3~4 of the 6 implements a feature, it is a requirement to be the considered Done

[GrayJack]

@argentite
Seems like @EduRenesto doesn't want to continue, would like to continue where he stopped? Maybe implementing what he did not