Refactored ls.rs to fix cargo fmt

[hbina]

cargo fmt have trouble formatting large clap::Arg.
This commit simply splits some stuff up so that the implementation details
can be formatted.

Signed-off-by: Hanif Bin Ariffin hanif.ariffin.4326@gmail.com

[sylvestre]

cargo fmt have trouble formatting large clap::Arg.

Do you please explain this a bit more?
Are you sure it isn't this issue rust-lang/rustfmt#3863 ?

Anyway, I don't think we should split the files just to make rustfmt happy?

@tertsdiepraam wdyt?

[tertsdiepraam]

I've seen in another PR that rustfmt fails if the help message is too long, so maybe we should just break those up. Example:

// From
.help("this message is a very very very long help message that doesn't fit")
// To
.help(
    "this message is a very very very \
    long help message that doesn't fit"
)

Most arguments in ls seem to have this already, but maybe they should be broken off earlier?

[tertsdiepraam]

I do actually think this should be broken up though, but I would wait for #2414 to get merged and work from there.

[hbina]

Okay, I will try to refactor the constants first. Maybe by making options a file of its own. I am also thinking of grouping the flags and their help/after_help description together.