Extra newlines after sub-lists

[laurelschmidt]

It looks like 2 newlines are added after a list, if the list has only one level (this is expected behavior), but three newlines are added after a list if the last element of the list is a sub-bullet/indented. I would expect to have only two newlines following a list, regardless of whether the last element of the list is indented.

Code to reproduce:

package main

import (
	"fmt"

	"github.com/gomarkdown/markdown"
	"github.com/gomarkdown/markdown/md"
	"github.com/gomarkdown/markdown/parser"
)

func testGomarkdown(input []byte) []byte {
	extensions := parser.NoIntraEmphasis | parser.Tables | parser.FencedCode | parser.Strikethrough | parser.SpaceHeadings | parser.HeadingIDs | parser.DefinitionLists | parser.AutoHeadingIDs | parser.NoEmptyLineBeforeBlock
	p := parser.NewWithExtensions(extensions)
	tree := p.Parse(input)

	renderer := md.NewRenderer()
	return markdown.Render(tree, renderer)
}

func main() {
	testStr := "# Main Header\n\n## New Subsection\n\n* Another list\n    * With multiple levels\n\n## First Subsection\n\n* Content of first subsection.\n* More\n    * Yet more\n\n"
	output := testGomarkdown([]byte(testStr))
	if string(output) != testStr {
		fmt.Printf("Test string was modified during parsing and rendering. Expected:\n\n%q\n\nGot:\n\n%q", testStr, string(output))
	} else {
		fmt.Println("Test string is return unmodified.")
	}
}

Output:

Test string was modified during parsing and rendering. Expected:

"# Main Header\n\n## New Subsection\n\n* Another list\n * With multiple levels\n\n## First Subsection\n\n* Content of first subsection.\n* More\n * Yet more\n\n"

Got:

"# Main Header\n\n## New Subsection\n\n* Another list\n * With multiple levels\n\n\n## First Subsection\n\n* Content of first subsection.\n* More\n * Yet more\n\n\n"

[laurelschmidt]

Working on a fix. Simplified example: "* A list\n * With multiple levels\n\n", when parsed and rendered, becomes "* A list\n * With multiple levels\n\n\n":

AST for that example: