`latex_macros` extension changes.

Don't pass through macro definitions themselves when `latex_macros`
is set.  The macros have already been applied.

If `latex_macros` is enabled, then `rawLaTeXBlock` in
Text.Pandoc.Readers.LaTeX will succeed in parsing a macro definition,
and will update pandoc's internal macro map accordingly, but the
empty string will be returned.

Together with earlier changes, this closes #4179.

1 files changed, 33 insertions, 1 deletions

diff --git a/test/command/macros.md b/test/command/macros.md
index 46179e3c7..4bd2eb00a 100644
--- a/test/command/macros.md
+++ b/test/command/macros.md
@@ -3,7 +3,6 @@
 \newcommand{\my}{\phi}
 $\my+\my$
 ^D
-\newcommand{\my}{\phi}
 $\phi+\phi$
 ```
 
@@ -66,3 +65,36 @@ x &= y\\\end{aligned}\]
 
 \emph{hi--ok}
 ```
+
+```
+% pandoc -f markdown+latex_macros -t markdown
+\newcommand{\my}{\phi}
+\begin{equation}
+\my+\my
+\end{equation}
+^D
+\begin{equation}
+\phi+\phi
+\end{equation}
+```
+
+```
+% pandoc -f markdown-latex_macros -t markdown
+\newcommand{\my}{\phi}
+\begin{equation}
+\my+\my
+\end{equation}
+^D
+\newcommand{\my}{\phi}
+\begin{equation}
+\my+\my
+\end{equation}
+```
+
+```
+% pandoc -f markdown+latex_macros -t markdown
+\newcommand{\my}{\emph{a}}
+\my
+^D
+\emph{a}
+```