split multiline strings

[akihiro17]

I'd like the split function to work with multiline strings, similar to the lines function. In this commit, the split function reads the text until it encounters a NULL character.

And I use printf to pass the text instead of a here document to avoid the extra newline.

$ cat < <(printf %s "Hello, world") | od -c
0000000   H   e   l   l   o   ,       w   o   r   l   d
0000014
$ cat <<< "Hello, world" | od -c
0000000   H   e   l   l   o   ,       w   o   r   l   d  \n
0000015

script

import { words } from "std"

let str = "abd\txd e\nfgh:i"
loop word in words(str) {
  echo "==="
  echo word
  echo "==="
}

heredoc
unsafe $IFS="{delimiter}" read -rd '' -a {nameof result} <<<"\${nameof text}"$

===
abd	xd
===
===
e
fgh:i

===

printf

===
abd	xd
===
===
e
fgh:i
===

[arapower]

First, I confirmed that the differences in the behavior of the sample scripts are as follows:

// Amber script
import { words } from "std"

let str = "abd\txd e\nfgh:i"
loop word in words(str) {
  echo "==="
  echo word
  echo "==="
}

# Ph0enixKM:master
$ ./target/release/amber $script
===
abd     xd
===
===
e
===

# akihiro17:split-multiline-string
$ ./target/release/amber $script
===
abd     xd
===
===
e
fgh:i
===

I understand what you want to achieve.

Next, what's the motivation behind this change in the test code?
Rather than modifying the existing test code, why not add some test code for split and words functions?

[akihiro17]

I have added the test code for this change.

[arapower]

LGTM

[Ph0enixKM]

LGTM

[Sec32fun32]

Sec7