ensure filenames have posix-paths in latex on Windows

IPython/nbconvert/templates/latex/latex_basic.tplx

@@ -49,28 +49,28 b' it introduces a new line'
 
 ((*- block data_png -*))
 \begin{center}
-\includegraphics[max size={0.7\textwidth}{0.9\textheight}]{((( output.png_filename )))}
+\includegraphics[max size={0.7\textwidth}{0.9\textheight}]{((( output.png_filename | posix_path )))}
 \par
 \end{center}
 ((*- endblock -*))
 
 ((*- block data_jpg -*))
 \begin{center}
-\includegraphics[max size={0.7\textwidth}{0.9\textheight}]{((( output.jpeg_filename )))}
+\includegraphics[max size={0.7\textwidth}{0.9\textheight}]{((( output.jpeg_filename | posix_path )))}
 \par
 \end{center}
 ((*- endblock -*))
 
 ((*- block data_svg -*))
 \begin{center}
-\includegraphics[width=0.7\textwidth]{((( output.svg_filename )))}
+\includegraphics[width=0.7\textwidth]{((( output.svg_filename | posix_path )))}
 \par
 \end{center}
 ((*- endblock -*))
 
 ((*- block data_pdf -*))
 \begin{center}
-\includegraphics[width=0.7\textwidth]{((( output.pdf_filename )))}
+\includegraphics[width=0.7\textwidth]{((( output.pdf_filename | posix_path )))}
 \par
 \end{center}
 ((*- endblock -*))

IPython/nbconvert/templates/latex/sphinx.tplx

@@ -46,7 +46,7 b' Note: For best display, use latex syntax highlighting. =))'
     \def\sphinxdocclass{(((parentdocumentclass)))}
 
     % Declare the document class
-    \documentclass[letterpaper,10pt,english]{((( resources.sphinx.texinputs )))/sphinx(((documentclass)))}
+    \documentclass[letterpaper,10pt,english]{((( resources.sphinx.texinputs | posix_path )))/sphinx(((documentclass)))}
 
     % Imports
     \usepackage[utf8]{inputenc}
@@ -55,9 +55,9 b' Note: For best display, use latex syntax highlighting. =))'
     \usepackage{babel}
     \usepackage{times}
     \usepackage{import}
-    \usepackage[((( resources.sphinx.chapterstyle )))]{((( resources.sphinx.texinputs )))/fncychap}
+    \usepackage[((( resources.sphinx.chapterstyle )))]{((( resources.sphinx.texinputs | posix_path )))/fncychap}
     \usepackage{longtable}
-    \usepackage{((( resources.sphinx.texinputs )))/sphinx}
+    \usepackage{((( resources.sphinx.texinputs | posix_path )))/sphinx}
     \usepackage{multirow}
 
     \usepackage{amsmath}
@@ -352,19 +352,19 b' Note: For best display, use latex syntax highlighting. =))'
 % Supported image formats
 %==============================================================================
 ((*- block data_png -*))
-((( conditionally_center_output(insert_graphics(output.png_filename)) )))
+((( conditionally_center_output(insert_graphics(output.png_filename | posix_path)) )))
 ((*- endblock -*))
 
 ((*- block data_jpg -*))
-((( conditionally_center_output(insert_graphics(output.jpg_filename)) )))
+((( conditionally_center_output(insert_graphics(output.jpg_filename | posix_path)) )))
 ((*- endblock -*))
 
 ((*- block data_svg -*))
-((( conditionally_center_output(insert_graphics(output.svg_filename)) )))
+((( conditionally_center_output(insert_graphics(output.svg_filename | posix_path)) )))
 ((*- endblock -*))
 
 ((*- block data_pdf -*))
-((( conditionally_center_output(insert_graphics(output.pdf_filename)) )))
+((( conditionally_center_output(insert_graphics(output.pdf_filename | posix_path)) )))
 ((*- endblock -*))
 
 ((*- block data_latex *))