SinglePlusPassThrough with spaces conflicts with LineBreak.

[odknt]

I think the below test should be failed.

libasciidoc/pkg/parser/passthrough_test.go

Lines 170 to 188 in 00c0132

	It("singleplus passthrough with spaces", func() {
	actualContent := `+ *hello*, world +`
	expectedResult := types.Paragraph{
	Attributes: types.ElementAttributes{},
	Lines: []types.InlineElements{
	{
	types.Passthrough{
	Kind: types.SinglePlusPassthrough,
	Elements: types.InlineElements{
	types.StringElement{
	Content: " *hello*, world ",
	},
	},
	},
	},
	},
	}
	verify(GinkgoT(), expectedResult, actualContent, parser.Entrypoint("DocumentBlock"))
	})

If allow contain spaces between plus and contents, parser cannot tell the difference between SinglePlusPassThrough and LineBreak.

asciidoctor parsed + *hello*, world + as follows:

<p>+ <strong>hello</strong>, world<br></p>

[xcoulon]

thanks for opening this issue @odknt I'll take a look at it

[xcoulon]

@odknt sorry for the late fix, I was deep into another issue. Please let me know if the fix is OK for you, and feel free to open new issues if you find other bugs ;)

[odknt]

@xcoulon thanks for fixing. 😄