Variable with spaces fails deploy because of incorrect --var transformation

[viddo]

STR

Define some variables containing spaces, e.g.

with:
  variables: FOO="bar baz",OTHER=…

Expected results

Variables applied like --var FOO="bar baz" --var OTHER=…

Actual results

Deploy fails with error like so (redacted irrelevant parts):

running: <preview-name> … --var FOO="bar --var baz" --var OTHER=…
 i  Using <ns> @ <domain> as context
 x  Invalid variable value 'baz"': must follow KEY=VALUE format

Observations

This appears to happen because the variables are incorrectly split:

variable_params= --var FOO=bar
variable_params= --var baz
variable_params= --var OTHER=…

I believe the culprit area is where the variables are split up into the separate --var KEY=VALUE args, here:

deploy-preview/entrypoint.sh

Lines 46 to 53 in 7f3be3b

	variable_params=""
	if [ ! -z "${variables}" ]; then
	for ARG in $(echo "${variables}" | tr ',' '\n'); do
	variable_params="${variable_params} --var ${ARG}"
	done
	params="${params} $variable_params"
	fi

Also tried with single quotes instead, same err.