Optimize newline handling for php.ini files

[glensc]

This reverts b46074c
from https://github.com/laminas/laminas-continuous-integration-action/pull/13/files

[boesing]

Please change the commit message to a message which reflects this change.

[weierophinney]

OMG - thank you! I couldn't figure out why echo $INI was omitting newlines, and was unaware that bash treated echoing a variable differently based on whether it was a bare variable or an interpolated one. (zsh treats both cases exactly the same.)

[glensc]

@weierophinney install checkbashisms tool, install shellcheck tool. they typically report all such issues that have weird side effects in shell language.

shell quoting is the first issue that comes up when writing shell scripts.

as i can't believe zsh diverges from standard sh with the echo behavior, i made at test:

➔ zsh
glen@rocinante zf1s % a=$(printf "a\nb")
glen@rocinante zf1s % echo $a
a
b
glen@rocinante zf1s % echo "$a"
a
b

glen@rocinante zf1s % bash
$ a=$(printf "a\nb")
$ echo $a
a b
$

learned something myself too!

[glensc]

@weierophinney I'm pretty sure you can use zsh in your actions if you want. but then the rest of the world will get confused if sh is not bash.