Consistent underline for Readers (#2270)

* Added underlineSpan builder function.  This can be easily updated if needed. The purpose is for Readers to transform underlines consistently.

* Docx Reader: Use underlineSpan and update test

* Org Reader: Use underlineSpan and add test

* Textile Reader: Use underlineSpan and add test case

* Txt2Tags Reader: Use underlineSpan and update test

* HTML Reader: Use underlineSpan and add test case

1 files changed, 2 insertions, 2 deletions

diff --git a/test/txt2tags.native b/test/txt2tags.native
index 982e727f5..f5134b8a1 100644
--- a/test/txt2tags.native
+++ b/test/txt2tags.native
@@ -29,8 +29,8 @@ Pandoc (Meta {unMeta = fromList [("author",MetaList [MetaInlines [Str "author"]]
 ,Para [Strikeout [Str "-------+--------"]]
 ,Para [Str "(",Space,Strikeout [Str "----------------"],Space,Str ")"]
 ,Header 1 ("inline",[],[]) [Str "Inline"]
-,Para [Str "i)",Space,Strong [Str "b"],Space,Emph [Str "i"],Space,Emph [Str "u"],Space,Strikeout [Str "s"],Space,Code ("",[],[]) "m",Space,Str "r",Space,RawInline (Format "html") "t",SoftBreak,Str "i)",Space,Strong [Str "bo"],Space,Emph [Str "it"],Space,Emph [Str "un"],Space,Strikeout [Str "st"],Space,Code ("",[],[]) "mo",Space,Str "ra",Space,RawInline (Format "html") "tg",SoftBreak,Str "i)",Space,Strong [Str "bold"],Space,Emph [Str "ital"],Space,Emph [Str "undr"],Space,Strikeout [Str "strk"],Space,Code ("",[],[]) "mono",Space,Str "raw",Space,RawInline (Format "html") "tggd",SoftBreak,Str "i)",Space,Strong [Str "bo",Space,Str "ld"],Space,Emph [Str "it",Space,Str "al"],Space,Emph [Str "un",Space,Str "dr"],Space,Strikeout [Str "st",Space,Str "rk"],Space,Code ("",[],[]) "mo no",Space,Str "r",Space,Str "aw",Space,RawInline (Format "html") "tg gd",SoftBreak,Str "i)",Space,Strong [Str "bo",Space,Str "*",Space,Str "ld"],Space,Emph [Str "it",Space,Str "/",Space,Str "al"],Space,Emph [Str "un",Space,Str "_",Space,Str "dr"],Space,Strikeout [Str "st",Space,Str "-",Space,Str "rk"],Space,Code ("",[],[]) "mo ` no",Space,Str "r",Space,Str "\"",Space,Str "aw",Space,RawInline (Format "html") "tg ' gd",SoftBreak,Str "i)",Space,Strong [Str "bo",Space,Str "**ld"],Space,Emph [Str "it",Space,Str "//al"],Space,Emph [Str "un",Space,Str "__dr"],Space,Strikeout [Str "st",Space,Str "--rk"],Space,Code ("",[],[]) "mo ``no",Space,Str "r",Space,Str "\"\"aw",Space,RawInline (Format "html") "tg ''gd",SoftBreak,Str "i)",Space,Strong [Str "bo",Space,Str "**",Space,Str "ld"],Space,Emph [Str "it",Space,Str "//",Space,Str "al"],Space,Emph [Str "un",Space,Str "__",Space,Str "dr"],Space,Strikeout [Str "st",Space,Str "--",Space,Str "rk"],Space,Code ("",[],[]) "mo `` no",Space,Str "r",Space,Str "\"\"",Space,Str "aw",Space,RawInline (Format "html") "tg '' gd",SoftBreak,Str "i)",Space,Strong [Str "**bold**"],Space,Emph [Str "//ital//"],Space,Emph [Str "__undr__"],Space,Strikeout [Str "--strk--"],Space,Code ("",[],[]) "``mono``",Space,Str "\"\"raw\"\"",Space,RawInline (Format "html") "''tggd''",SoftBreak,Str "i)",Space,Strong [Str "*bold*"],Space,Emph [Str "/ital/"],Space,Emph [Str "_undr_"],Space,Strikeout [Str "-strk-"],Space,Code ("",[],[]) "`mono`",Space,Str "\"raw\"",Space,RawInline (Format "html") "'tggd'"]
-,Para [Str "i)",Space,Strong [Str "*"],Space,Emph [Str "/"],Space,Emph [Str "_"],Space,Strikeout [Str "-"],Space,Code ("",[],[]) "`",Space,Str "\"",Space,RawInline (Format "html") "'",SoftBreak,Str "i)",Space,Strong [Str "**"],Space,Emph [Str "//"],Space,Emph [Str "__"],Space,Strikeout [Str "--"],Space,Code ("",[],[]) "``",Space,Str "\"\"",Space,RawInline (Format "html") "''",SoftBreak,Str "i)",Space,Strong [Str "***"],Space,Emph [Str "///"],Space,Emph [Str "___"],Space,Strikeout [Str "---"],Space,Code ("",[],[]) "```",Space,Str "\"\"\"",Space,RawInline (Format "html") "'''",SoftBreak,Str "i)",Space,Strong [Str "****"],Space,Emph [Str "////"],Space,Emph [Str "____"],Space,Strikeout [Str "----"],Space,Code ("",[],[]) "````",Space,Str "\"\"\"\"",Space,RawInline (Format "html") "''''",SoftBreak,Str "i)",Space,Strong [Str "*****"],Space,Emph [Str "/////"],Space,Emph [Str "_____"],Space,Strikeout [Str "-----"],Space,Code ("",[],[]) "`````",Space,Str "\"\"\"\"\"",Space,RawInline (Format "html") "'''''",SoftBreak,Str "i)",Space,Strong [Str "******"],Space,Emph [Str "//////"],Space,Emph [Str "______"],Space,Strikeout [Str "------"],Space,Code ("",[],[]) "``````",Space,Str "\"\"\"\"\"\"",Space,RawInline (Format "html") "''''''"]
+,Para [Str "i)",Space,Strong [Str "b"],Space,Emph [Str "i"],Space,Span ("",["underline"],[]) [Str "u"],Space,Strikeout [Str "s"],Space,Code ("",[],[]) "m",Space,Str "r",Space,RawInline (Format "html") "t",SoftBreak,Str "i)",Space,Strong [Str "bo"],Space,Emph [Str "it"],Space,Span ("",["underline"],[]) [Str "un"],Space,Strikeout [Str "st"],Space,Code ("",[],[]) "mo",Space,Str "ra",Space,RawInline (Format "html") "tg",SoftBreak,Str "i)",Space,Strong [Str "bold"],Space,Emph [Str "ital"],Space,Span ("",["underline"],[]) [Str "undr"],Space,Strikeout [Str "strk"],Space,Code ("",[],[]) "mono",Space,Str "raw",Space,RawInline (Format "html") "tggd",SoftBreak,Str "i)",Space,Strong [Str "bo",Space,Str "ld"],Space,Emph [Str "it",Space,Str "al"],Space,Span ("",["underline"],[]) [Str "un",Space,Str "dr"],Space,Strikeout [Str "st",Space,Str "rk"],Space,Code ("",[],[]) "mo no",Space,Str "r",Space,Str "aw",Space,RawInline (Format "html") "tg gd",SoftBreak,Str "i)",Space,Strong [Str "bo",Space,Str "*",Space,Str "ld"],Space,Emph [Str "it",Space,Str "/",Space,Str "al"],Space,Span ("",["underline"],[]) [Str "un",Space,Str "_",Space,Str "dr"],Space,Strikeout [Str "st",Space,Str "-",Space,Str "rk"],Space,Code ("",[],[]) "mo ` no",Space,Str "r",Space,Str "\"",Space,Str "aw",Space,RawInline (Format "html") "tg ' gd",SoftBreak,Str "i)",Space,Strong [Str "bo",Space,Str "**ld"],Space,Emph [Str "it",Space,Str "//al"],Space,Span ("",["underline"],[]) [Str "un",Space,Str "__dr"],Space,Strikeout [Str "st",Space,Str "--rk"],Space,Code ("",[],[]) "mo ``no",Space,Str "r",Space,Str "\"\"aw",Space,RawInline (Format "html") "tg ''gd",SoftBreak,Str "i)",Space,Strong [Str "bo",Space,Str "**",Space,Str "ld"],Space,Emph [Str "it",Space,Str "//",Space,Str "al"],Space,Span ("",["underline"],[]) [Str "un",Space,Str "__",Space,Str "dr"],Space,Strikeout [Str "st",Space,Str "--",Space,Str "rk"],Space,Code ("",[],[]) "mo `` no",Space,Str "r",Space,Str "\"\"",Space,Str "aw",Space,RawInline (Format "html") "tg '' gd",SoftBreak,Str "i)",Space,Strong [Str "**bold**"],Space,Emph [Str "//ital//"],Space,Span ("",["underline"],[]) [Str "__undr__"],Space,Strikeout [Str "--strk--"],Space,Code ("",[],[]) "``mono``",Space,Str "\"\"raw\"\"",Space,RawInline (Format "html") "''tggd''",SoftBreak,Str "i)",Space,Strong [Str "*bold*"],Space,Emph [Str "/ital/"],Space,Span ("",["underline"],[]) [Str "_undr_"],Space,Strikeout [Str "-strk-"],Space,Code ("",[],[]) "`mono`",Space,Str "\"raw\"",Space,RawInline (Format "html") "'tggd'"]
+,Para [Str "i)",Space,Strong [Str "*"],Space,Emph [Str "/"],Space,Span ("",["underline"],[]) [Str "_"],Space,Strikeout [Str "-"],Space,Code ("",[],[]) "`",Space,Str "\"",Space,RawInline (Format "html") "'",SoftBreak,Str "i)",Space,Strong [Str "**"],Space,Emph [Str "//"],Space,Span ("",["underline"],[]) [Str "__"],Space,Strikeout [Str "--"],Space,Code ("",[],[]) "``",Space,Str "\"\"",Space,RawInline (Format "html") "''",SoftBreak,Str "i)",Space,Strong [Str "***"],Space,Emph [Str "///"],Space,Span ("",["underline"],[]) [Str "___"],Space,Strikeout [Str "---"],Space,Code ("",[],[]) "```",Space,Str "\"\"\"",Space,RawInline (Format "html") "'''",SoftBreak,Str "i)",Space,Strong [Str "****"],Space,Emph [Str "////"],Space,Span ("",["underline"],[]) [Str "____"],Space,Strikeout [Str "----"],Space,Code ("",[],[]) "````",Space,Str "\"\"\"\"",Space,RawInline (Format "html") "''''",SoftBreak,Str "i)",Space,Strong [Str "*****"],Space,Emph [Str "/////"],Space,Span ("",["underline"],[]) [Str "_____"],Space,Strikeout [Str "-----"],Space,Code ("",[],[]) "`````",Space,Str "\"\"\"\"\"",Space,RawInline (Format "html") "'''''",SoftBreak,Str "i)",Space,Strong [Str "******"],Space,Emph [Str "//////"],Space,Span ("",["underline"],[]) [Str "______"],Space,Strikeout [Str "------"],Space,Code ("",[],[]) "``````",Space,Str "\"\"\"\"\"\"",Space,RawInline (Format "html") "''''''"]
 ,Para [Str "i)",Space,Str "****",Space,Str "////",Space,Str "____",Space,Str "----",Space,Str "````",Space,Str "\"\"\"\"",Space,Str "''''",SoftBreak,Str "i)",Space,Str "**",Space,Str "**",Space,Str "//",Space,Str "//",Space,Str "__",Space,Str "__",Space,Str "--",Space,Str "--",Space,Str "``",Space,Str "``",Space,Str "\"\"",Space,Str "\"\"",Space,Str "''",Space,Str "''"]
 ,Para [Str "i)",Space,Str "**",Space,Str "bold**",Space,Str "//",Space,Str "ital//",Space,Str "__",Space,Str "undr__",Space,Str "--",Space,Str "strk--",Space,Str "``",Space,Str "mono``",Space,Str "\"\"",Space,Str "raw\"\"",Space,Str "''",Space,Str "tggd''",SoftBreak,Str "i)",Space,Str "**bold",Space,Str "**",Space,Str "//ital",Space,Str "//",Space,Str "__undr",Space,Str "__",Space,Str "--strk",Space,Str "--",Space,Str "``mono",Space,Str "``",Space,Str "\"\"raw",Space,Str "\"\"",Space,Str "''tggd",Space,Str "''",SoftBreak,Str "i)",Space,Str "**",Space,Str "bold",Space,Str "**",Space,Str "//",Space,Str "ital",Space,Str "//",Space,Str "__",Space,Str "undr",Space,Str "__",Space,Str "--",Space,Str "strk",Space,Str "--",Space,Str "``",Space,Str "mono",Space,Str "``",Space,Str "\"\"",Space,Str "raw",Space,Str "\"\"",Space,Str "''",Space,Str "tggd",Space,Str "''"]
 ,Header 1 ("link",[],[]) [Str "Link"]