Change #1138144 had a related patch set uploaded (by Samwilson; author: Samwilson):

[mediawiki/extensions/TemplateWizard@master] Support suggestedvalues ComboBox fields

https://gerrit.wikimedia.org/r/1138144

Why do we allow empty string in the set of suggested values? e.g. the following

"type": {
	"type": "string",
	"suggestedvalues": [
		"foo",
		"bar",
		""
	]
}

results in an empty option (a nonbreaking space is added as the option label):

I guess it just makes sense to accept whatever people put in the templatedata, and they can remove that if they want.

Change #1138144 merged by jenkins-bot:

[mediawiki/extensions/TemplateWizard@master] Support suggestedvalues ComboBox fields

https://gerrit.wikimedia.org/r/1138144

In T335986#10828764, @Samwilson wrote:

Why do we allow empty string in the set of suggested values? e.g. the following

"type": {
	"type": "string",
	"suggestedvalues": [
		"foo",
		"bar",
		""
	]
}

results in an empty option (a nonbreaking space is added as the option label):

I guess it just makes sense to accept whatever people put in the templatedata, and they can remove that if they want.

I used once an empty string as parameter, distinguished from no parameter at all, so maybe it may be useful.