From d7282a8f006d49eccc97b97cceea298f504c60cf Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Tue, 31 Oct 2017 01:58:48 +0530
Subject: [PATCH] Column coloring: Add a contains rules type. Fixes #1728464
 [Enhancement - allow character match in
 rules](https://bugs.launchpad.net/calibre/+bug/1728464)

---
 src/calibre/gui2/preferences/coloring.py | 2 ++
 src/calibre/library/coloring.py          | 4 ++++
 2 files changed, 6 insertions(+)

diff --git a/src/calibre/gui2/preferences/coloring.py b/src/calibre/gui2/preferences/coloring.py
index 6ac9d9e743..3c9aefe452 100644
--- a/src/calibre/gui2/preferences/coloring.py
+++ b/src/calibre/gui2/preferences/coloring.py
@@ -79,6 +79,8 @@ class ConditionEditor(QWidget):  # {{{
             'single'   : (
                 (_('is'), 'is'),
                 (_('is not'), 'is not'),
+                (_('contains'), 'contains'),
+                (_('does not contain'), 'does not contain'),
                 (_('matches pattern'), 'matches pattern'),
                 (_('does not match pattern'), 'does not match pattern'),
                 (_('is set'), 'is set'),
diff --git a/src/calibre/library/coloring.py b/src/calibre/library/coloring.py
index b4ffad297e..7d1df7823b 100644
--- a/src/calibre/library/coloring.py
+++ b/src/calibre/library/coloring.py
@@ -199,6 +199,10 @@ class Rule(object):  # {{{
             return "contains(field('%s'), \"%s\", '1', '')"%(col, val)
         if action == 'does not match pattern':
             return "contains(field('%s'), \"%s\", '', '1')"%(col, val)
+        if action == 'contains':
+            return "contains(field('%s'), \"%s\", '1', '')"%(col, re.escape(val))
+        if action == 'does not contain':
+            return "contains(field('%s'), \"%s\", '', '1')"%(col, re.escape(val))
 
 # }}}