From e0ab09611a8ab42c69da81ed3fd3c3df8c0c70de Mon Sep 17 00:00:00 2001
From: John MacFarlane <jgm@berkeley.edu>
Date: Wed, 26 Jul 2017 12:50:36 +0200
Subject: [PATCH] HTML writer: render raw inline environments when --mathjax
used.
We previously did this only with raw blocks, on the assumption
that math environments would always be raw blocks. This has changed
since we now parse them as inline environments.
Closes #3816.
---
src/Text/Pandoc/Writers/HTML.hs | 11 ++++++++---
test/command/3816.md | 29 +++++++++++++++++++++++++++++
2 files changed, 37 insertions(+), 3 deletions(-)
create mode 100644 test/command/3816.md
diff --git a/src/Text/Pandoc/Writers/HTML.hs b/src/Text/Pandoc/Writers/HTML.hs
index d09158c42..61f2c959a 100644
--- a/src/Text/Pandoc/Writers/HTML.hs
+++ b/src/Text/Pandoc/Writers/HTML.hs
@@ -1007,9 +1007,14 @@ inlineToHtml opts inline = do
ishtml <- isRawHtml f
if ishtml
then return $ preEscapedString str
- else do
- report $ InlineNotRendered inline
- return mempty
+ else if (f == Format "latex" || f == Format "tex") &&
+ "\\begin" `isPrefixOf` str &&
+ allowsMathEnvironments (writerHTMLMathMethod opts) &&
+ isMathEnvironment str
+ then inlineToHtml opts $ Math DisplayMath str
+ else do
+ report $ InlineNotRendered inline
+ return mempty
(Link attr txt (s,_)) | "mailto:" `isPrefixOf` s -> do
linkText <- inlineListToHtml opts txt
obfuscateLink opts attr linkText s
diff --git a/test/command/3816.md b/test/command/3816.md
new file mode 100644
index 000000000..dba37bfec
--- /dev/null
+++ b/test/command/3816.md
@@ -0,0 +1,29 @@
+```
+% pandoc --mathjax -t html5
+This is an equation:
+\begin{equation}
+y+2 = 3
+\end{equation}
+
+This is a system of equations:
+\begin{align*}
+x^2+y^2 & = 2 \\
+\sin(y) & = 0.5
+\end{align*}
+
+This is Euler's formula:
+\begin{eqnarray*}
+e^{i\pi} + 1 & = & 0.
+\end{eqnarray*}
+^D
+<p>This is an equation: <span class="math display">\[\begin{equation}
+y+2 = 3
+\end{equation}\]</span></p>
+<p>This is a system of equations: <span class="math display">\[\begin{align*}
+x^2+y^2 & = 2 \\
+\sin(y) & = 0.5
+\end{align*}\]</span></p>
+<p>This is Euler’s formula: <span class="math display">\[\begin{eqnarray*}
+e^{i\pi} + 1 & = & 0.
+\end{eqnarray*}\]</span></p>
+```