Added LaTeX multiline equation #305

tests/notebooks/ipynb_py/Line_breaks_in_LateX_305.ipynb

@@ -0,0 +1,73 @@
+{
+ "cells": [
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "This cell uses no particular cell marker\n",
+    "\n",
+    "$$\n",
+    "\\begin{align}\n",
+    "\\dot{x} & = \\sigma(y-x)\\\\\n",
+    "\\dot{y} & = \\rho x - y - xz \\\\\n",
+    "\\dot{z} & = -\\beta z + xy\n",
+    "\\end{align}\n",
+    "$$"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "This cell uses no particular cell marker, and a single slash in the $\\LaTeX$ equation\n",
+    "\n",
+    "$$\n",
+    "\\begin{align}\n",
+    "\\dot{x} & = \\sigma(y-x) \\\n",
+    "\\dot{y} & = \\rho x - y - xz \\\n",
+    "\\dot{z} & = -\\beta z + xy\n",
+    "\\end{align}\n",
+    "$$"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {
+    "cell_marker": "'''"
+   },
+   "source": [
+    "This cell uses the triple quote cell markers introduced at https://github.com/mwouts/jupytext/issues/305\n",
+    "\n",
+    "$$\n",
+    "\\begin{align}\n",
+    "\\dot{x} & = \\sigma(y-x)\\\\\n",
+    "\\dot{y} & = \\rho x - y - xz \\\\\n",
+    "\\dot{z} & = -\\beta z + xy\n",
+    "\\end{align}\n",
+    "$$"
+   ]
+  }
+ ],
+ "metadata": {
+  "celltoolbar": "Edit Metadata",
+  "kernelspec": {
+   "display_name": "Python 3",
+   "language": "python",
+   "name": "python3"
+  },
+  "language_info": {
+   "codemirror_mode": {
+    "name": "ipython",
+    "version": 3
+   },
+   "file_extension": ".py",
+   "mimetype": "text/x-python",
+   "name": "python",
+   "nbconvert_exporter": "python",
+   "pygments_lexer": "ipython3",
+   "version": "3.7.4"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 2
+}

tests/test_mirror.py

@@ -118,7 +118,7 @@ def test_ipynb_to_Rmd(nb_file, no_jupytext_version_number):
 
 @requires_pandoc
 @pytest.mark.parametrize('nb_file',
-                         list_notebooks('ipynb', skip='(functional|Notebook with|flavors|invalid)'))
+                         list_notebooks('ipynb', skip='(functional|Notebook with|flavors|invalid|305)'))
 def test_ipynb_to_pandoc(nb_file, no_jupytext_version_number):
     assert_conversion_same_as_mirror(nb_file, 'md:pandoc', 'ipynb_to_pandoc')