I m confused about ```companion object fun lt R gt TagConsumer lt R gt kpis ``` vs ```companion object fun FlowContent kpis ``` I want to call this function a from the DSL b when building an html fragment like this ```fun render String return buildString appendHTML kpis ``` I can make the FlowContent variation at least compile with ``` fun render String return buildString appendHTML div kpis ``` but it blows up in weird ways

I m confused about ```companion object fun lt R gt TagConsum kotlinlang #kotlinx-html

# kotlinx-html

Reuben Firmin

11/14/2023, 2:17 PM

I'm confused about:

companion object {
        fun <R> TagConsumer<R>.kpis() {

companion object {
        fun FlowContent.kpis() {

I want to call this function: a) from the DSL b) when building an html fragment like this:

fun render(): String {
        return buildString {
            appendHTML().kpis()
        }
    }

I can make the FlowContent variation at least compile with:

fun render(): String {
        return buildString {
            appendHTML().div { 
                kpis()
            }
        }
    }

... but it blows up in weird ways

well, specifically it blows up with:

java.lang.IllegalArgumentException: Tag svg has invalid attribute name xmlns
	at kotlinx.html.stream.HTMLStreamBuilder.onTagStart(stream.kt:30)
	at kotlinx.html.consumers.DelayedConsumer.processDelayedTag(delayed-consumer.kt:59)
	at kotlinx.html.consumers.DelayedConsumer.onTagStart(delayed-consumer.kt:10)

...however, this function rendered just fine when it was included in a whole page dsl. it's only as a fragment that it dies

or, with xmlns commented out:

java.lang.IllegalStateException: You can't change tag attribute because it was already passed to the downstream
	at kotlinx.html.consumers.DelayedConsumer.onTagAttributeChange(delayed-consumer.kt:16)
	at kotlinx.html.impl.DelegatingMap.put(delegating-map.kt:27)
	at kotlinx.html.impl.DelegatingMap.put(delegating-map.kt:5)

where, again, it was fine as part of the whole page

11/28/2023, 11:47 AM

Hey, @Reuben Firmin. Could you log github issues with repro?

Reuben Firmin

11/28/2023, 11:48 AM