For plain list items with a single child that is a paragraph, do not wrap in paragraph html tags.

This is mimicking the behavior from org-mode's HTML exporter.

src/context/element.rs

@@ -1,5 +1,6 @@
 use serde::Serialize;
 
+use super::plain_list_simple_item::RenderPlainListSimpleItem;
 use super::render_context::RenderContext;
 use crate::error::CustomError;
 use crate::intermediate::IElement;
@@ -35,6 +36,7 @@ use super::verse_block::RenderVerseBlock;
 pub(crate) enum RenderElement {
     Paragraph(RenderParagraph),
     PlainList(RenderPlainList),
+    PlainListSimpleItem(RenderPlainListSimpleItem),
     CenterBlock(RenderCenterBlock),
     QuoteBlock(RenderQuoteBlock),
     SpecialBlock(RenderSpecialBlock),
@@ -69,6 +71,9 @@ render!(RenderElement, IElement, original, render_context, {
             render_context.clone(),
             inner,
         )?)),
+        IElement::PlainListSimpleItem(inner) => Ok(RenderElement::PlainListSimpleItem(
+            RenderPlainListSimpleItem::new(render_context.clone(), inner)?,
+        )),
         IElement::CenterBlock(inner) => Ok(RenderElement::CenterBlock(RenderCenterBlock::new(
             render_context.clone(),
             inner,

src/context/mod.rs

@@ -41,6 +41,7 @@ mod paragraph;
 mod plain_link;
 mod plain_list;
 mod plain_list_item;
+mod plain_list_simple_item;
 mod plain_text;
 mod planning;
 mod property_drawer;

src/context/plain_list_simple_item.rs

@@ -0,0 +1,38 @@
+use serde::Serialize;
+
+use super::render_context::RenderContext;
+use crate::error::CustomError;
+use crate::intermediate::IPlainListSimpleItem;
+
+use super::macros::render;
+use super::RenderObject;
+
+/// Special case for list items with only 1 child which is a paragraph. In those cases, the paragraph tags are omitted. This is equivalent to a Paragraph but in a different struct to have a different type tag.
+#[derive(Debug, Serialize)]
+#[serde(tag = "type")]
+#[serde(rename = "plain_list_simple_item")]
+pub(crate) struct RenderPlainListSimpleItem {
+    children: Vec<RenderObject>,
+    post_blank: organic::types::PostBlank,
+}
+
+render!(
+    RenderPlainListSimpleItem,
+    IPlainListSimpleItem,
+    original,
+    render_context,
+    {
+        let children = {
+            let mut ret = Vec::new();
+            for obj in original.children.iter() {
+                ret.push(RenderObject::new(render_context.clone(), obj)?);
+            }
+            ret
+        };
+
+        Ok(RenderPlainListSimpleItem {
+            children,
+            post_blank: original.post_blank,
+        })
+    }
+);