Data structure: use real arrays (#62)

[Artoria2e5]

62

[Artoria2e5]

Bai, try to run a basic self-build check..

[Artoria2e5]

rebased. still recommending pull --rebase=preserve origin data.

[Artoria2e5]

Well, OK, f that, I forgot to check the args in arch/_common.

[Artoria2e5]

Since the flags are exported into ENV in the traditional sloppy way anyway, there is no point in array-izing it for now.

[jyhi]

How is this PR now?

[Artoria2e5]

Changes required for merging should be still obvious.

[Artoria2e5]

Oh. The flags internal part (nolto, usexxx etc) needs some data sanitization too.

[Artoria2e5]

lmao this isn't going anywhere. Anyways, just came up with these snippets:

is_array() { [[ $(declare -p $1) == 'declare -'[aA]* ]]; }
to_array() {
  declare -n ref=$1
  mapfile -d ' ' -t $1< <(printf %s "$ref")
}
check_type_array() {
  if ! is_array "$1"; then
    ab_warn "$1 should be an array now! splitting."
    to_array "$1"
  fi
}

[MingcongBai]

This has stalled for way too long and requires quite a bit of work still. Let's resurrect this when we feel up for it.