fix clipping of files after pre

The aim is to replace every \n in a <pre> with a <br /> because st
doesn't support pre.

However, ST doesn't support <br/> for some reason, only <br> or <br />.
We use to add some <br>s, but BeautifulSoup automatically adds a <br/>
when it sees a <br> (close the tag), which causes the clipping of the
rest of the file by ST. But if we replace every \n with a <br />,
BeautifulSoup automatically replaces it with <br/> (= ST bug)

So, we do exactly that, except that at the very end, when markdown2html
returns, we replace every <br/> with a <br />

markdown2html.py

@@ -71,14 +71,15 @@ def markdown2html(markdown, basepath, re_render, resources):
 
         # FIXME: this method sucks, but can we do better?
         fixed_pre = str(code_element) \
-            .replace('\n', '<br>')\
-            .replace(' ', '<i class="space">.</i>')
+            .replace(' ', '<i class="space">.</i>') \
+            .replace('\n', '<br />')
 
         code_element.replace_with(bs4.BeautifulSoup(fixed_pre, "html.parser"))
 
     # FIXME: highlight the code using Sublime's syntax
 
-    return "<style>\n{}\n</style>\n\n{}".format(resources['stylesheet'], soup)
+    # FIXME: report that ST doesn't support <br/> but does work with <br />... WTF?
+    return "<style>\n{}\n</style>\n\n{}".format(resources['stylesheet'], soup).replace('<br/>', '<br />')
 
 def get_base64_image(path, re_render):