diff --git a/resources/template-functions.json b/resources/template-functions.json
new file mode 100644
index 0000000000..cb329d771c
--- /dev/null
+++ b/resources/template-functions.json
@@ -0,0 +1,28 @@
+{
+    "contains": "def evaluate(self, formatter, kwargs, mi, locals,\n             val, test, value_if_present, value_if_not):\n    if re.search(test, val):\n        return value_if_present\n    else:\n        return value_if_not\n", 
+    "divide": "def evaluate(self, formatter, kwargs, mi, locals, x, y):\n    x = float(x if x else 0)\n    y = float(y if y else 0)\n    return unicode(x / y)\n", 
+    "uppercase": "def evaluate(self, formatter, kwargs, mi, locals, val):\n    return val.upper()\n", 
+    "strcat": "def evaluate(self, formatter, kwargs, mi, locals, *args):\n    i = 0\n    res = ''\n    for i in range(0, len(args)):\n        res += args[i]\n    return res\n", 
+    "substr": "def evaluate(self, formatter, kwargs, mi, locals, str_, start_, end_):\n    return str_[int(start_): len(str_) if int(end_) == 0 else int(end_)]\n", 
+    "ifempty": "def evaluate(self, formatter, kwargs, mi, locals, val, value_if_empty):\n    if val:\n        return val\n    else:\n        return value_if_empty\n", 
+    "field": "def evaluate(self, formatter, kwargs, mi, locals, name):\n    return formatter.get_value(name, [], kwargs)\n", 
+    "capitalize": "def evaluate(self, formatter, kwargs, mi, locals, val):\n    return capitalize(val)\n", 
+    "list_item": "def evaluate(self, formatter, kwargs, mi, locals, val, index, sep):\n    if not val:\n        return ''\n    index = int(index)\n    val = val.split(sep)\n    try:\n        return val[index]\n    except:\n        return ''\n", 
+    "shorten": "def evaluate(self, formatter, kwargs, mi, locals,\n             val, leading, center_string, trailing):\n    l = max(0, int(leading))\n    t = max(0, int(trailing))\n    if len(val) > l + len(center_string) + t:\n        return val[0:l] + center_string + ('' if t == 0 else val[-t:])\n    else:\n        return val\n", 
+    "re": "def evaluate(self, formatter, kwargs, mi, locals, val, pattern, replacement):\n    return re.sub(pattern, replacement, val)\n", 
+    "add": "def evaluate(self, formatter, kwargs, mi, locals, x, y):\n    x = float(x if x else 0)\n    y = float(y if y else 0)\n    return unicode(x + y)\n", 
+    "lookup": "def evaluate(self, formatter, kwargs, mi, locals, val, *args):\n    if len(args) == 2: # here for backwards compatibility\n        if val:\n            return formatter.vformat('{'+args[0].strip()+'}', [], kwargs)\n        else:\n            return formatter.vformat('{'+args[1].strip()+'}', [], kwargs)\n    if (len(args) % 2) != 1:\n        raise ValueError(_('lookup requires either 2 or an odd number of arguments'))\n    i = 0\n    while i < len(args):\n        if i + 1 >= len(args):\n            return formatter.vformat('{' + args[i].strip() + '}', [], kwargs)\n        if re.search(args[i], val):\n            return formatter.vformat('{'+args[i+1].strip() + '}', [], kwargs)\n        i += 2\n", 
+    "template": "def evaluate(self, formatter, kwargs, mi, locals, template):\n    template = template.replace('[[', '{').replace(']]', '}')\n    return formatter.safe_format(template, kwargs, 'TEMPLATE', mi)\n", 
+    "print": "def evaluate(self, formatter, kwargs, mi, locals, *args):\n    print args\n    return None\n", 
+    "titlecase": "def evaluate(self, formatter, kwargs, mi, locals, val):\n    return titlecase(val)\n", 
+    "test": "def evaluate(self, formatter, kwargs, mi, locals, val, value_if_set, value_not_set):\n    if val:\n        return value_if_set\n    else:\n        return value_not_set\n", 
+    "eval": "def evaluate(self, formatter, kwargs, mi, locals, template):\n    from formatter import eval_formatter\n    template = template.replace('[[', '{').replace(']]', '}')\n    return eval_formatter.safe_format(template, locals, 'EVAL', None)\n", 
+    "multiply": "def evaluate(self, formatter, kwargs, mi, locals, x, y):\n    x = float(x if x else 0)\n    y = float(y if y else 0)\n    return unicode(x * y)\n", 
+    "subtract": "def evaluate(self, formatter, kwargs, mi, locals, x, y):\n    x = float(x if x else 0)\n    y = float(y if y else 0)\n    return unicode(x - y)\n", 
+    "count": "def evaluate(self, formatter, kwargs, mi, locals, val, sep):\n    return unicode(len(val.split(sep)))\n", 
+    "lowercase": "def evaluate(self, formatter, kwargs, mi, locals, val):\n    return val.lower()\n", 
+    "assign": "def evaluate(self, formatter, kwargs, mi, locals, target, value):\n    locals[target] = value\n    return value\n", 
+    "switch": "def evaluate(self, formatter, kwargs, mi, locals, val, *args):\n    if (len(args) % 2) != 1:\n        raise ValueError(_('switch requires an odd number of arguments'))\n    i = 0\n    while i < len(args):\n        if i + 1 >= len(args):\n            return args[i]\n        if re.search(args[i], val):\n            return args[i+1]\n        i += 2\n", 
+    "strcmp": "def evaluate(self, formatter, kwargs, mi, locals, x, y, lt, eq, gt):\n    v = strcmp(x, y)\n    if v < 0:\n        return lt\n    if v == 0:\n        return eq\n    return gt\n", 
+    "cmp": "def evaluate(self, formatter, kwargs, mi, locals, x, y, lt, eq, gt):\n    x = float(x if x else 0)\n    y = float(y if y else 0)\n    if x < y:\n        return lt\n    if x == y:\n        return eq\n    return gt\n"
+}
\ No newline at end of file
diff --git a/setup/resources.py b/setup/resources.py
index 03d9e28ea6..eedaf0bf6d 100644
--- a/setup/resources.py
+++ b/setup/resources.py
@@ -86,9 +86,20 @@ class Resources(Command):
 
         self.info('\tCreating template-functions.json')
         dest = self.j(self.RESOURCES, 'template-functions.json')
-        function_dict = {'test': 'def test(*args): return test'}
+        function_dict = {}
+        import inspect
+        from calibre.utils.formatter_functions import all_builtin_functions
+        for obj in all_builtin_functions:
+            eval_func = inspect.getmembers(obj,
+                    lambda x: inspect.ismethod(x) and x.__name__ == 'evaluate')
+            try:
+                lines = [l[4:] for l in inspect.getsourcelines(eval_func[0][1])[0]]
+            except:
+                continue
+            lines = ''.join(lines)
+            function_dict[obj.name] = lines
         import json
-        json.dump(function_dict, open(dest, 'wb'))
+        json.dump(function_dict, open(dest, 'wb'), indent=4)
 
     def clean(self):
         for x in ('scripts', 'recipes', 'ebook-convert-complete'):
diff --git a/src/calibre/gui2/tag_view.py b/src/calibre/gui2/tag_view.py
index 90d7ce698a..f6eac49426 100644
--- a/src/calibre/gui2/tag_view.py
+++ b/src/calibre/gui2/tag_view.py
@@ -730,7 +730,7 @@ class TagsModel(QAbstractItemModel): # {{{
             else:
                 collapse_model = 'partition'
                 collapse_template = tweaks['categories_collapsed_popularity_template']
-        collapse_letter = None
+        collapse_letter = collapse_letter_sk = None
 
         for i, r in enumerate(self.row_map):
             if self.hidden_categories and self.categories[i] in self.hidden_categories:
@@ -782,8 +782,17 @@ class TagsModel(QAbstractItemModel): # {{{
                         ts = tag.sort
                         if not ts:
                             ts = ' '
-                        if upper(ts[0]) != collapse_letter:
+                        try:
+                            sk = sort_key(ts)[0]
+                        except:
+                            sk = ts[0]
+
+                        if sk != collapse_letter_sk:
                             collapse_letter = upper(ts[0])
+                            try:
+                                collapse_letter_sk = sort_key(collapse_letter)[0]
+                            except:
+                                collapse_letter_sk = collapse_letter
                             sub_cat = TagTreeItem(parent=category,
                                      data = collapse_letter,
                                      category_icon = category_node.icon,
diff --git a/src/calibre/utils/formatter_functions.py b/src/calibre/utils/formatter_functions.py
index a66d787095..8f928cfe87 100644
--- a/src/calibre/utils/formatter_functions.py
+++ b/src/calibre/utils/formatter_functions.py
@@ -77,7 +77,7 @@ class FormatterFunction(object):
                                         exc_traceback)[-2:]).replace('\n', '')
             return _('Exception ' + info)
 
-
+all_builtin_functions = []
 class BuiltinFormatterFunction(FormatterFunction):
     def __init__(self):
         formatter_functions.register_builtin(self)
@@ -88,6 +88,7 @@ class BuiltinFormatterFunction(FormatterFunction):
         except:
             lines = []
         self.program_text = ''.join(lines)
+        all_builtin_functions.append(self)
 
 class BuiltinStrcmp(BuiltinFormatterFunction):
     name = 'strcmp'