blaze-html
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Published
20 hours ago •
jaspervdj
jaspervdj
The "Pretty" renderer generates incorrect output
Consider the following code:
{-# LANGUAGE OverloadedStrings #-}
module Test where
import Text.Blaze.Html5 as H
import Text.Blaze.Html5.Attributes as A
import Text.Blaze.Html.Renderer.Pretty
example =
putStr $ renderHtml $ docTypeHtml $ do
H.head $ do
meta ! charset "utf-8"
H.title "Test"
body $ pre $ do
"Text"
H.a $ "Text inside tag"
"More text"
The resulting output:
<!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8">
<title>
Test
</title>
</head>
<body>
<pre>
Text
<a>
Text inside tag
</a>
More text
</pre>
</body>
</html>
When the pre tag is used whitespace is significant, so I consider the output above to be incorrect. If the String renderer is used, then the output is better:
<!DOCTYPE HTML>
<html><head><meta charset="utf-8"><title>Test</title></head><body><pre>Text<a>Text inside tag</a>More text</pre></body></html>
The xhtml library handles this problem by inserting whitespace inside the tags (</a\n >). Perhaps you could do the same. (Or at least document that the pretty output is broken.)
