Added mirror representation for the latex notebook

#305

tests/notebooks/mirror/ipynb_to_Rmd/Line_breaks_in_LateX_305.Rmd

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+---
+jupyter:
+  kernelspec:
+    display_name: Python 3
+    language: python
+    name: python3
+---
+
+This cell uses no particular cell marker
+
+$$
+\begin{align}
+\dot{x} & = \sigma(y-x)\\
+\dot{y} & = \rho x - y - xz \\
+\dot{z} & = -\beta z + xy
+\end{align}
+$$
+
+
+This cell uses no particular cell marker, and a single slash in the $\LaTeX$ equation
+
+$$
+\begin{align}
+\dot{x} & = \sigma(y-x) \
+\dot{y} & = \rho x - y - xz \
+\dot{z} & = -\beta z + xy
+\end{align}
+$$
+
+
+This cell uses the triple quote cell markers introduced at https://github.com/mwouts/jupytext/issues/305
+
+$$
+\begin{align}
+\dot{x} & = \sigma(y-x)\\
+\dot{y} & = \rho x - y - xz \\
+\dot{z} & = -\beta z + xy
+\end{align}
+$$

tests/notebooks/mirror/ipynb_to_hydrogen/Line_breaks_in_LateX_305.py

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+# ---
+# jupyter:
+#   kernelspec:
+#     display_name: Python 3
+#     language: python
+#     name: python3
+# ---
+
+# %% [markdown]
+# This cell uses no particular cell marker
+#
+# $$
+# \begin{align}
+# \dot{x} & = \sigma(y-x)\\
+# \dot{y} & = \rho x - y - xz \\
+# \dot{z} & = -\beta z + xy
+# \end{align}
+# $$
+
+# %% [markdown]
+# This cell uses no particular cell marker, and a single slash in the $\LaTeX$ equation
+#
+# $$
+# \begin{align}
+# \dot{x} & = \sigma(y-x) \
+# \dot{y} & = \rho x - y - xz \
+# \dot{z} & = -\beta z + xy
+# \end{align}
+# $$
+
+# %% [markdown]
+'''
+This cell uses the triple quote cell markers introduced at https://github.com/mwouts/jupytext/issues/305
+
+$$
+\begin{align}
+\dot{x} & = \sigma(y-x)\\
+\dot{y} & = \rho x - y - xz \\
+\dot{z} & = -\beta z + xy
+\end{align}
+$$
+'''

tests/notebooks/mirror/ipynb_to_md/Line_breaks_in_LateX_305.md

@@ -0,0 +1,39 @@
+---
+jupyter:
+  kernelspec:
+    display_name: Python 3
+    language: python
+    name: python3
+---
+
+This cell uses no particular cell marker
+
+$$
+\begin{align}
+\dot{x} & = \sigma(y-x)\\
+\dot{y} & = \rho x - y - xz \\
+\dot{z} & = -\beta z + xy
+\end{align}
+$$
+
+
+This cell uses no particular cell marker, and a single slash in the $\LaTeX$ equation
+
+$$
+\begin{align}
+\dot{x} & = \sigma(y-x) \
+\dot{y} & = \rho x - y - xz \
+\dot{z} & = -\beta z + xy
+\end{align}
+$$
+
+
+This cell uses the triple quote cell markers introduced at https://github.com/mwouts/jupytext/issues/305
+
+$$
+\begin{align}
+\dot{x} & = \sigma(y-x)\\
+\dot{y} & = \rho x - y - xz \\
+\dot{z} & = -\beta z + xy
+\end{align}
+$$

tests/notebooks/mirror/ipynb_to_percent/Line_breaks_in_LateX_305.py

@@ -0,0 +1,42 @@
+# ---
+# jupyter:
+#   kernelspec:
+#     display_name: Python 3
+#     language: python
+#     name: python3
+# ---
+
+# %% [markdown]
+# This cell uses no particular cell marker
+#
+# $$
+# \begin{align}
+# \dot{x} & = \sigma(y-x)\\
+# \dot{y} & = \rho x - y - xz \\
+# \dot{z} & = -\beta z + xy
+# \end{align}
+# $$
+
+# %% [markdown]
+# This cell uses no particular cell marker, and a single slash in the $\LaTeX$ equation
+#
+# $$
+# \begin{align}
+# \dot{x} & = \sigma(y-x) \
+# \dot{y} & = \rho x - y - xz \
+# \dot{z} & = -\beta z + xy
+# \end{align}
+# $$
+
+# %% [markdown]
+'''
+This cell uses the triple quote cell markers introduced at https://github.com/mwouts/jupytext/issues/305
+
+$$
+\begin{align}
+\dot{x} & = \sigma(y-x)\\
+\dot{y} & = \rho x - y - xz \\
+\dot{z} & = -\beta z + xy
+\end{align}
+$$
+'''

tests/notebooks/mirror/ipynb_to_script/Line_breaks_in_LateX_305.py

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+# ---
+# jupyter:
+#   kernelspec:
+#     display_name: Python 3
+#     language: python
+#     name: python3
+# ---
+
+# This cell uses no particular cell marker
+#
+# $$
+# \begin{align}
+# \dot{x} & = \sigma(y-x)\\
+# \dot{y} & = \rho x - y - xz \\
+# \dot{z} & = -\beta z + xy
+# \end{align}
+# $$
+
+# This cell uses no particular cell marker, and a single slash in the $\LaTeX$ equation
+#
+# $$
+# \begin{align}
+# \dot{x} & = \sigma(y-x) \
+# \dot{y} & = \rho x - y - xz \
+# \dot{z} & = -\beta z + xy
+# \end{align}
+# $$
+
+# + [markdown]
+'''
+This cell uses the triple quote cell markers introduced at https://github.com/mwouts/jupytext/issues/305
+
+$$
+\begin{align}
+\dot{x} & = \sigma(y-x)\\
+\dot{y} & = \rho x - y - xz \\
+\dot{z} & = -\beta z + xy
+\end{align}
+$$
+'''

tests/notebooks/mirror/ipynb_to_script_vim_folding_markers/Line_breaks_in_LateX_305.py

@@ -0,0 +1,43 @@
+# ---
+# jupyter:
+#   jupytext:
+#     cell_markers: '{{{,}}}'
+#   kernelspec:
+#     display_name: Python 3
+#     language: python
+#     name: python3
+# ---
+
+# This cell uses no particular cell marker
+#
+# $$
+# \begin{align}
+# \dot{x} & = \sigma(y-x)\\
+# \dot{y} & = \rho x - y - xz \\
+# \dot{z} & = -\beta z + xy
+# \end{align}
+# $$
+
+# This cell uses no particular cell marker, and a single slash in the $\LaTeX$ equation
+#
+# $$
+# \begin{align}
+# \dot{x} & = \sigma(y-x) \
+# \dot{y} & = \rho x - y - xz \
+# \dot{z} & = -\beta z + xy
+# \end{align}
+# $$
+
+# {{{ [markdown]
+'''
+This cell uses the triple quote cell markers introduced at https://github.com/mwouts/jupytext/issues/305
+
+$$
+\begin{align}
+\dot{x} & = \sigma(y-x)\\
+\dot{y} & = \rho x - y - xz \\
+\dot{z} & = -\beta z + xy
+\end{align}
+$$
+'''
+# }}}

tests/notebooks/mirror/ipynb_to_script_vscode_folding_markers/Line_breaks_in_LateX_305.py

@@ -0,0 +1,43 @@
+# ---
+# jupyter:
+#   jupytext:
+#     cell_markers: region,endregion
+#   kernelspec:
+#     display_name: Python 3
+#     language: python
+#     name: python3
+# ---
+
+# This cell uses no particular cell marker
+#
+# $$
+# \begin{align}
+# \dot{x} & = \sigma(y-x)\\
+# \dot{y} & = \rho x - y - xz \\
+# \dot{z} & = -\beta z + xy
+# \end{align}
+# $$
+
+# This cell uses no particular cell marker, and a single slash in the $\LaTeX$ equation
+#
+# $$
+# \begin{align}
+# \dot{x} & = \sigma(y-x) \
+# \dot{y} & = \rho x - y - xz \
+# \dot{z} & = -\beta z + xy
+# \end{align}
+# $$
+
+# region [markdown]
+'''
+This cell uses the triple quote cell markers introduced at https://github.com/mwouts/jupytext/issues/305
+
+$$
+\begin{align}
+\dot{x} & = \sigma(y-x)\\
+\dot{y} & = \rho x - y - xz \\
+\dot{z} & = -\beta z + xy
+\end{align}
+$$
+'''
+# endregion

tests/notebooks/mirror/ipynb_to_sphinx/Line_breaks_in_LateX_305.py

@@ -0,0 +1,42 @@
+# ---
+# jupyter:
+#   kernelspec:
+#     display_name: Python 3
+#     language: python
+#     name: python3
+# ---
+
+"""
+This cell uses no particular cell marker
+
+$$
+\begin{align}
+\dot{x} & = \sigma(y-x)\\
+\dot{y} & = \rho x - y - xz \\
+\dot{z} & = -\beta z + xy
+\end{align}
+$$
+"""
+
+###############################################################################
+# This cell uses no particular cell marker, and a single slash in the $\LaTeX$ equation
+#
+# $$
+# \begin{align}
+# \dot{x} & = \sigma(y-x) \
+# \dot{y} & = \rho x - y - xz \
+# \dot{z} & = -\beta z + xy
+# \end{align}
+# $$
+
+'''
+This cell uses the triple quote cell markers introduced at https://github.com/mwouts/jupytext/issues/305
+
+$$
+\begin{align}
+\dot{x} & = \sigma(y-x)\\
+\dot{y} & = \rho x - y - xz \\
+\dot{z} & = -\beta z + xy
+\end{align}
+$$
+'''