Reload CSS when highlighter option changes.

CSS wasn't getting refreshed when the use of pygments and ST highlighter
setting was changed.

st3/mdpopups/__init__.py

@@ -130,12 +130,17 @@ def _get_scheme_css(view, css):
     if not in cache or entry is expired in cache.
     """
     scheme = view.settings().get('color_scheme')
+    settings = sublime.load_settings("Preferences.sublime-settings")
     obj = None
     user_css = ''
     if scheme is not None:
         if scheme in _scheme_cache:
             obj, user_css, t = _scheme_cache[scheme]
-            if is_cache_expired(t):
+            # Check if cache expired or user changed pygments setting.
+            if (
+                is_cache_expired(t) or
+                obj.variables.get('use_pygments', True) != (not settings.get('mdpopups.use_sublime_highlighter', False))
+            ):
                 obj = None
                 user_css = ''
         if obj is None:

st3/mdpopups/st_scheme_template.py

@@ -88,7 +88,10 @@ def parse_global(self):
         self.variables = {
             "is_dark": is_dark,
             "is_light": not is_dark,
-            "color_scheme": self.scheme_file
+            "color_scheme": self.scheme_file,
+            "use_pygments": not sublime.load_settings("Preferences.sublime-settings").get(
+                'mdpopups.use_sublime_highlighter', False
+            )
         }
         self.html_border = rgba.get_rgb()
         self.fground = self.strip_color(color_settings.get("foreground", '#000000'))
@@ -322,11 +325,8 @@ def retrieve_selector(self, selector, key=None):
 
     def apply_template(self, css):
         """Apply template to css."""
-        var = copy.copy(self.variables)
-        var['use_pygments'] = not sublime.load_settings("Preferences.sublime-settings").get(
-            'mdpopups.use_sublime_highlighter', False
-        )
-        return self.env.from_string(css).render(var=var, colors=self.colors)
+
+        return self.env.from_string(css).render(var=copy.copy(self.variables), colors=self.colors)
 
     def get_css(self):
         """Get css."""