From c31de00dcdb285d021af76ce761cdffea5a04427 Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Tue, 16 Sep 2014 11:50:04 +0530
Subject: [PATCH] Conversion: Do not allow default (user-agent) style rules to
 ever override style rules defined in the input document, regardless of CSS
 selector specificity. Fixes #1369753 [conversion ignores "*" css
 selector](https://bugs.launchpad.net/calibre/+bug/1369753)

---
 src/calibre/ebooks/oeb/stylizer.py | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/src/calibre/ebooks/oeb/stylizer.py b/src/calibre/ebooks/oeb/stylizer.py
index eb4b6ac915..ec3f4e87ba 100644
--- a/src/calibre/ebooks/oeb/stylizer.py
+++ b/src/calibre/ebooks/oeb/stylizer.py
@@ -257,7 +257,7 @@ class Stylizer(object):
         index = 0
         self.stylesheets = set()
         self.page_rule = {}
-        for stylesheet in stylesheets:
+        for sheet_index, stylesheet in enumerate(stylesheets):
             href = stylesheet.href
             self.stylesheets.add(href)
             for rule in stylesheet.cssRules:
@@ -267,10 +267,10 @@ class Stylizer(object):
                     if not media.intersection({'all', 'screen', 'amzn-kf8'}):
                         continue
                     for subrule in rule.cssRules:
-                        rules.extend(self.flatten_rule(subrule, href, index))
+                        rules.extend(self.flatten_rule(subrule, href, index, is_user_agent_sheet=sheet_index==0))
                         index += 1
                 else:
-                    rules.extend(self.flatten_rule(rule, href, index))
+                    rules.extend(self.flatten_rule(rule, href, index, is_user_agent_sheet=sheet_index==0))
                     index = index + 1
         rules.sort()
         self.rules = rules
@@ -351,12 +351,13 @@ class Stylizer(object):
         data = item.data.cssText
         return ('utf-8', data)
 
-    def flatten_rule(self, rule, href, index):
+    def flatten_rule(self, rule, href, index, is_user_agent_sheet=False):
         results = []
+        sheet_index = 0 if is_user_agent_sheet else 1
         if isinstance(rule, CSSStyleRule):
             style = self.flatten_style(rule.style)
             for selector in rule.selectorList:
-                specificity = selector.specificity + (index,)
+                specificity = (sheet_index,) + selector.specificity + (index,)
                 text = selector.selectorText
                 selector = list(selector.seq)
                 results.append((specificity, selector, style, text, href))