Config: Add @searchhelp, to search in the help string of config vars and groups.

plugins/Config/plugin.py

@@ -206,6 +206,25 @@ class Config(callbacks.Plugin):
             irc.reply(_('There were no matching configuration variables.'))
     search = wrap(search, ['lowered']) # XXX compose with withoutSpaces?
 
+    @internationalizeDocstring
+    def searchhelp(self, irc, msg, args, phrase):
+        """<phrase>
+
+        Searches for <phrase> in the help of current configuration variables.
+        """
+        L = []
+        for (name, x) in conf.supybot.getValues(getChildren=True):
+            if phrase in x.help().lower():
+                last_name_part = registry.split(name)[-1]
+                if not irc.isChannel(last_name_part) \
+                        and not last_name_part.startswith(':'): # network
+                    L.append(name)
+        if L:
+            irc.reply(format('%L', L))
+        else:
+            irc.reply(_('There were no matching configuration variables.'))
+    searchhelp = wrap(searchhelp, ['lowered'])
+
     @internationalizeDocstring
     def searchvalues(self, irc, msg, args, word):
         """<word>

plugins/Config/test.py

@@ -88,6 +88,14 @@ class ConfigTestCase(ChannelPluginTestCase):
         self.assertNotError('config channel reply.whenAddressedBy.chars @')
         self.assertNotRegexp('config search chars', self.channel)
 
+    def testSearchHelp(self):
+        self.assertRegexp(
+            'config searchhelp "what prefix characters"',
+            'supybot.reply.whenAddressedBy.chars')
+        self.assertNotError('config channel reply.whenAddressedBy.chars @')
+        self.assertNotRegexp(
+            'config searchhelp "what prefix characters"', self.channel)
+
     def testSearchValues(self):
         self.assertResponse(
             'config searchvalues @@@',