prompt: We are currently solving the following issue within our repository. Here is the issue text:
  --- BEGIN ISSUE ---
  Restricting/redirecting output of commands to bot-commands for regular users
  **Edit:** I've decided to make this a general issue, since the `!free` command turns out to be a bit disruptive as well. In python-discussions, there have just been four consecutive calls to `!free` and it looks very disruptive (see below).
  
  My idea would be to create an easy way to redirect the output of certain commands, free and help, to bot commands for regular users, with the bot sending a temporary message to the user in channel redirecting them there. The bot could then delete that message (and, maybe, the invoking message as well) after a certain amount of time has passed.
  
  **Four times !free in python-discussion:**
  ![2019-01-18_17-38-32](https://user-images.githubusercontent.com/33516116/51400480-c8aeb980-1b48-11e9-838e-515904e62776.png)
  
  **Old message for context:**
  Now the `!help` command works outside of bot-commands again, we may want to think about restricting the use/output to bot-commands for regular users. The help-embeds are quite sizeable and, therefore, quite disruptive in on-topic channels.
  
  I want to propose to redirect the **output** of help (the help-embed) to bot-commands for non-staff members, prepended by a mention of the user invoking the command. In addition, we could display a small, non-disruptive embed in the original context channel redirecting the user to bot commands. I think this should also be the case for help-calls on specific commands, as the embeds for those can be quite sizeable as well (e.g., `!help site`).
  
  Personally, I'd like this restriction to only apply to regular users, so staff can pull up help on a command quickly in channel and use help in the staff channels.
  
  --- END ISSUE ---
  
  Below are some code segments, each from a relevant file. One or more of these files may contain bugs.
  --- BEGIN FILES ---
  Path: `bot/cogs/free.py`
  Content:
  ```
  1 import logging
  2 from datetime import datetime
  3 from operator import itemgetter
  4 
  5 from discord import Colour, Embed, Member, utils
  6 from discord.ext.commands import Bot, Cog, Context, command
  7 
  8 from bot.constants import Categories, Channels, Free, STAFF_ROLES
  9 from bot.decorators import redirect_output
  10 
  11 log = logging.getLogger(__name__)
  12 
  13 TIMEOUT = Free.activity_timeout
  14 RATE = Free.cooldown_rate
  15 PER = Free.cooldown_per
  16 
  17 
  18 class Free(Cog):
  19     """Tries to figure out which help channels are free."""
  20 
  21     PYTHON_HELP_ID = Categories.python_help
  22 
  23     @command(name="free", aliases=('f',))
  24     @redirect_output(destination_channel=Channels.bot, bypass_roles=STAFF_ROLES)
  25     async def free(self, ctx: Context, user: Member = None, seek: int = 2) -> None:
  26         """
  27         Lists free help channels by likeliness of availability.
  28 
  29         seek is used only when this command is invoked in a help channel.
  30         You cannot override seek without mentioning a user first.
  31 
  32         When seek is 2, we are avoiding considering the last active message
  33         in a channel to be the one that invoked this command.
  34 
  35         When seek is 3 or more, a user has been mentioned on the assumption
  36         that they asked if the channel is free or they asked their question
  37         in an active channel, and we want the message before that happened.
  38         """
  39         free_channels = []
  40         python_help = utils.get(ctx.guild.categories, id=self.PYTHON_HELP_ID)
  41 
  42         if user is not None and seek == 2:
  43             seek = 3
  44         elif not 0 < seek < 10:
  45             seek = 3
  46 
  47         # Iterate through all the help channels
  48         # to check latest activity
  49         for channel in python_help.channels:
  50             # Seek further back in the help channel
  51             # the command was invoked in
  52             if channel.id == ctx.channel.id:
  53                 messages = await channel.history(limit=seek).flatten()
  54                 msg = messages[seek - 1]
  55             # Otherwise get last message
  56             else:
  57                 msg = await channel.history(limit=1).next()  # noqa (False positive)
  58 
  59             inactive = (datetime.utcnow() - msg.created_at).seconds
  60             if inactive > TIMEOUT:
  61                 free_channels.append((inactive, channel))
  62 
  63         embed = Embed()
  64         embed.colour = Colour.blurple()
  65         embed.title = "**Looking for a free help channel?**"
  66 
  67         if user is not None:
  68             embed.description = f"**Hey {user.mention}!**\n\n"
  69         else:
  70             embed.description = ""
  71 
  72         # Display all potentially inactive channels
  73         # in descending order of inactivity
  74         if free_channels:
  75             embed.description += "**The following channel{0} look{1} free:**\n\n**".format(
  76                 's' if len(free_channels) > 1 else '',
  77                 '' if len(free_channels) > 1 else 's'
  78             )
  79 
  80             # Sort channels in descending order by seconds
  81             # Get position in list, inactivity, and channel object
  82             # For each channel, add to embed.description
  83             sorted_channels = sorted(free_channels, key=itemgetter(0), reverse=True)
  84             for i, (inactive, channel) in enumerate(sorted_channels, 1):
  85                 minutes, seconds = divmod(inactive, 60)
  86                 if minutes > 59:
  87                     hours, minutes = divmod(minutes, 60)
  88                     embed.description += f"{i}. {channel.mention} inactive for {hours}h{minutes}m{seconds}s\n\n"
  89                 else:
  90                     embed.description += f"{i}. {channel.mention} inactive for {minutes}m{seconds}s\n\n"
  91 
  92             embed.description += ("**\nThese channels aren't guaranteed to be free, "
  93                                   "so use your best judgement and check for yourself.")
  94         else:
  95             embed.description = ("**Doesn't look like any channels are available right now. "
  96                                  "You're welcome to check for yourself to be sure. "
  97                                  "If all channels are truly busy, please be patient "
  98                                  "as one will likely be available soon.**")
  99 
  100         await ctx.send(embed=embed)
  101 
  102 
  103 def setup(bot: Bot) -> None:
  104     """Free cog load."""
  105     bot.add_cog(Free())
  106     log.info("Cog loaded: Free")
  107
  ```
  --- END FILES ---
  
  Please first localize the bug based on the issue statement, and then generate a patch according to the `git diff` format fenced by three backticks.
  
  Here is an example:
  
  ```diff
  diff --git a/examples/server_async.py b/examples/server_async.py
  --- a/examples/server_async.py
  +++ b/examples/server_async.py
  @@ -313,4 +313,4 @@
   
   
   if __name__ == "__main__":
  -    asyncio.run(run_async_server("."), debug=True)
  +    asyncio.run(run_async_server(), debug=True)
  diff --git a/examples/server_sync.py b/examples/server_sync.py
  --- a/examples/server_sync.py
  +++ b/examples/server_sync.py
  @@ -313,5 +313,5 @@
   
   
   if __name__ == "__main__":
  -    server = run_sync_server(".")
  +    server = run_sync_server()
       server.shutdown()
  
  ```
  
golden_diff: diff --git a/bot/cogs/free.py b/bot/cogs/free.py
  --- a/bot/cogs/free.py
  +++ b/bot/cogs/free.py
  @@ -72,30 +72,27 @@
           # Display all potentially inactive channels
           # in descending order of inactivity
           if free_channels:
  -            embed.description += "**The following channel{0} look{1} free:**\n\n**".format(
  -                's' if len(free_channels) > 1 else '',
  -                '' if len(free_channels) > 1 else 's'
  -            )
  -
               # Sort channels in descending order by seconds
               # Get position in list, inactivity, and channel object
               # For each channel, add to embed.description
               sorted_channels = sorted(free_channels, key=itemgetter(0), reverse=True)
  -            for i, (inactive, channel) in enumerate(sorted_channels, 1):
  +
  +            for (inactive, channel) in sorted_channels[:3]:
                   minutes, seconds = divmod(inactive, 60)
                   if minutes > 59:
                       hours, minutes = divmod(minutes, 60)
  -                    embed.description += f"{i}. {channel.mention} inactive for {hours}h{minutes}m{seconds}s\n\n"
  +                    embed.description += f"{channel.mention} **{hours}h {minutes}m {seconds}s** inactive\n"
                   else:
  -                    embed.description += f"{i}. {channel.mention} inactive for {minutes}m{seconds}s\n\n"
  +                    embed.description += f"{channel.mention} **{minutes}m {seconds}s** inactive\n"
   
  -            embed.description += ("**\nThese channels aren't guaranteed to be free, "
  -                                  "so use your best judgement and check for yourself.")
  +            embed.set_footer(text="Please confirm these channels are free before posting")
           else:
  -            embed.description = ("**Doesn't look like any channels are available right now. "
  -                                 "You're welcome to check for yourself to be sure. "
  -                                 "If all channels are truly busy, please be patient "
  -                                 "as one will likely be available soon.**")
  +            embed.description = (
  +                "Doesn't look like any channels are available right now. "
  +                "You're welcome to check for yourself to be sure. "
  +                "If all channels are truly busy, please be patient "
  +                "as one will likely be available soon."
  +            )
   
           await ctx.send(embed=embed)
  
verification_info: {"golden_diff": "diff --git a/bot/cogs/free.py b/bot/cogs/free.py\n--- a/bot/cogs/free.py\n+++ b/bot/cogs/free.py\n@@ -72,30 +72,27 @@\n         # Display all potentially inactive channels\n         # in descending order of inactivity\n         if free_channels:\n-            embed.description += \"**The following channel{0} look{1} free:**\\n\\n**\".format(\n-                's' if len(free_channels) > 1 else '',\n-                '' if len(free_channels) > 1 else 's'\n-            )\n-\n             # Sort channels in descending order by seconds\n             # Get position in list, inactivity, and channel object\n             # For each channel, add to embed.description\n             sorted_channels = sorted(free_channels, key=itemgetter(0), reverse=True)\n-            for i, (inactive, channel) in enumerate(sorted_channels, 1):\n+\n+            for (inactive, channel) in sorted_channels[:3]:\n                 minutes, seconds = divmod(inactive, 60)\n                 if minutes > 59:\n                     hours, minutes = divmod(minutes, 60)\n-                    embed.description += f\"{i}. {channel.mention} inactive for {hours}h{minutes}m{seconds}s\\n\\n\"\n+                    embed.description += f\"{channel.mention} **{hours}h {minutes}m {seconds}s** inactive\\n\"\n                 else:\n-                    embed.description += f\"{i}. {channel.mention} inactive for {minutes}m{seconds}s\\n\\n\"\n+                    embed.description += f\"{channel.mention} **{minutes}m {seconds}s** inactive\\n\"\n \n-            embed.description += (\"**\\nThese channels aren't guaranteed to be free, \"\n-                                  \"so use your best judgement and check for yourself.\")\n+            embed.set_footer(text=\"Please confirm these channels are free before posting\")\n         else:\n-            embed.description = (\"**Doesn't look like any channels are available right now. \"\n-                                 \"You're welcome to check for yourself to be sure. \"\n-                                 \"If all channels are truly busy, please be patient \"\n-                                 \"as one will likely be available soon.**\")\n+            embed.description = (\n+                \"Doesn't look like any channels are available right now. \"\n+                \"You're welcome to check for yourself to be sure. \"\n+                \"If all channels are truly busy, please be patient \"\n+                \"as one will likely be available soon.\"\n+            )\n \n         await ctx.send(embed=embed)\n", "issue": "Restricting/redirecting output of commands to bot-commands for regular users\n**Edit:** I've decided to make this a general issue, since the `!free` command turns out to be a bit disruptive as well. In python-discussions, there have just been four consecutive calls to `!free` and it looks very disruptive (see below).\r\n\r\nMy idea would be to create an easy way to redirect the output of certain commands, free and help, to bot commands for regular users, with the bot sending a temporary message to the user in channel redirecting them there. The bot could then delete that message (and, maybe, the invoking message as well) after a certain amount of time has passed.\r\n\r\n**Four times !free in python-discussion:**\r\n![2019-01-18_17-38-32](https://user-images.githubusercontent.com/33516116/51400480-c8aeb980-1b48-11e9-838e-515904e62776.png)\r\n\r\n**Old message for context:**\r\nNow the `!help` command works outside of bot-commands again, we may want to think about restricting the use/output to bot-commands for regular users. The help-embeds are quite sizeable and, therefore, quite disruptive in on-topic channels.\r\n\r\nI want to propose to redirect the **output** of help (the help-embed) to bot-commands for non-staff members, prepended by a mention of the user invoking the command. In addition, we could display a small, non-disruptive embed in the original context channel redirecting the user to bot commands. I think this should also be the case for help-calls on specific commands, as the embeds for those can be quite sizeable as well (e.g., `!help site`).\r\n\r\nPersonally, I'd like this restriction to only apply to regular users, so staff can pull up help on a command quickly in channel and use help in the staff channels.\n", "before_files": [{"content": "import logging\nfrom datetime import datetime\nfrom operator import itemgetter\n\nfrom discord import Colour, Embed, Member, utils\nfrom discord.ext.commands import Bot, Cog, Context, command\n\nfrom bot.constants import Categories, Channels, Free, STAFF_ROLES\nfrom bot.decorators import redirect_output\n\nlog = logging.getLogger(__name__)\n\nTIMEOUT = Free.activity_timeout\nRATE = Free.cooldown_rate\nPER = Free.cooldown_per\n\n\nclass Free(Cog):\n    \"\"\"Tries to figure out which help channels are free.\"\"\"\n\n    PYTHON_HELP_ID = Categories.python_help\n\n    @command(name=\"free\", aliases=('f',))\n    @redirect_output(destination_channel=Channels.bot, bypass_roles=STAFF_ROLES)\n    async def free(self, ctx: Context, user: Member = None, seek: int = 2) -> None:\n        \"\"\"\n        Lists free help channels by likeliness of availability.\n\n        seek is used only when this command is invoked in a help channel.\n        You cannot override seek without mentioning a user first.\n\n        When seek is 2, we are avoiding considering the last active message\n        in a channel to be the one that invoked this command.\n\n        When seek is 3 or more, a user has been mentioned on the assumption\n        that they asked if the channel is free or they asked their question\n        in an active channel, and we want the message before that happened.\n        \"\"\"\n        free_channels = []\n        python_help = utils.get(ctx.guild.categories, id=self.PYTHON_HELP_ID)\n\n        if user is not None and seek == 2:\n            seek = 3\n        elif not 0 < seek < 10:\n            seek = 3\n\n        # Iterate through all the help channels\n        # to check latest activity\n        for channel in python_help.channels:\n            # Seek further back in the help channel\n            # the command was invoked in\n            if channel.id == ctx.channel.id:\n                messages = await channel.history(limit=seek).flatten()\n                msg = messages[seek - 1]\n            # Otherwise get last message\n            else:\n                msg = await channel.history(limit=1).next()  # noqa (False positive)\n\n            inactive = (datetime.utcnow() - msg.created_at).seconds\n            if inactive > TIMEOUT:\n                free_channels.append((inactive, channel))\n\n        embed = Embed()\n        embed.colour = Colour.blurple()\n        embed.title = \"**Looking for a free help channel?**\"\n\n        if user is not None:\n            embed.description = f\"**Hey {user.mention}!**\\n\\n\"\n        else:\n            embed.description = \"\"\n\n        # Display all potentially inactive channels\n        # in descending order of inactivity\n        if free_channels:\n            embed.description += \"**The following channel{0} look{1} free:**\\n\\n**\".format(\n                's' if len(free_channels) > 1 else '',\n                '' if len(free_channels) > 1 else 's'\n            )\n\n            # Sort channels in descending order by seconds\n            # Get position in list, inactivity, and channel object\n            # For each channel, add to embed.description\n            sorted_channels = sorted(free_channels, key=itemgetter(0), reverse=True)\n            for i, (inactive, channel) in enumerate(sorted_channels, 1):\n                minutes, seconds = divmod(inactive, 60)\n                if minutes > 59:\n                    hours, minutes = divmod(minutes, 60)\n                    embed.description += f\"{i}. {channel.mention} inactive for {hours}h{minutes}m{seconds}s\\n\\n\"\n                else:\n                    embed.description += f\"{i}. {channel.mention} inactive for {minutes}m{seconds}s\\n\\n\"\n\n            embed.description += (\"**\\nThese channels aren't guaranteed to be free, \"\n                                  \"so use your best judgement and check for yourself.\")\n        else:\n            embed.description = (\"**Doesn't look like any channels are available right now. \"\n                                 \"You're welcome to check for yourself to be sure. \"\n                                 \"If all channels are truly busy, please be patient \"\n                                 \"as one will likely be available soon.**\")\n\n        await ctx.send(embed=embed)\n\n\ndef setup(bot: Bot) -> None:\n    \"\"\"Free cog load.\"\"\"\n    bot.add_cog(Free())\n    log.info(\"Cog loaded: Free\")\n", "path": "bot/cogs/free.py"}], "after_files": [{"content": "import logging\nfrom datetime import datetime\nfrom operator import itemgetter\n\nfrom discord import Colour, Embed, Member, utils\nfrom discord.ext.commands import Bot, Cog, Context, command\n\nfrom bot.constants import Categories, Channels, Free, STAFF_ROLES\nfrom bot.decorators import redirect_output\n\nlog = logging.getLogger(__name__)\n\nTIMEOUT = Free.activity_timeout\nRATE = Free.cooldown_rate\nPER = Free.cooldown_per\n\n\nclass Free(Cog):\n    \"\"\"Tries to figure out which help channels are free.\"\"\"\n\n    PYTHON_HELP_ID = Categories.python_help\n\n    @command(name=\"free\", aliases=('f',))\n    @redirect_output(destination_channel=Channels.bot, bypass_roles=STAFF_ROLES)\n    async def free(self, ctx: Context, user: Member = None, seek: int = 2) -> None:\n        \"\"\"\n        Lists free help channels by likeliness of availability.\n\n        seek is used only when this command is invoked in a help channel.\n        You cannot override seek without mentioning a user first.\n\n        When seek is 2, we are avoiding considering the last active message\n        in a channel to be the one that invoked this command.\n\n        When seek is 3 or more, a user has been mentioned on the assumption\n        that they asked if the channel is free or they asked their question\n        in an active channel, and we want the message before that happened.\n        \"\"\"\n        free_channels = []\n        python_help = utils.get(ctx.guild.categories, id=self.PYTHON_HELP_ID)\n\n        if user is not None and seek == 2:\n            seek = 3\n        elif not 0 < seek < 10:\n            seek = 3\n\n        # Iterate through all the help channels\n        # to check latest activity\n        for channel in python_help.channels:\n            # Seek further back in the help channel\n            # the command was invoked in\n            if channel.id == ctx.channel.id:\n                messages = await channel.history(limit=seek).flatten()\n                msg = messages[seek - 1]\n            # Otherwise get last message\n            else:\n                msg = await channel.history(limit=1).next()  # noqa (False positive)\n\n            inactive = (datetime.utcnow() - msg.created_at).seconds\n            if inactive > TIMEOUT:\n                free_channels.append((inactive, channel))\n\n        embed = Embed()\n        embed.colour = Colour.blurple()\n        embed.title = \"**Looking for a free help channel?**\"\n\n        if user is not None:\n            embed.description = f\"**Hey {user.mention}!**\\n\\n\"\n        else:\n            embed.description = \"\"\n\n        # Display all potentially inactive channels\n        # in descending order of inactivity\n        if free_channels:\n            # Sort channels in descending order by seconds\n            # Get position in list, inactivity, and channel object\n            # For each channel, add to embed.description\n            sorted_channels = sorted(free_channels, key=itemgetter(0), reverse=True)\n\n            for (inactive, channel) in sorted_channels[:3]:\n                minutes, seconds = divmod(inactive, 60)\n                if minutes > 59:\n                    hours, minutes = divmod(minutes, 60)\n                    embed.description += f\"{channel.mention} **{hours}h {minutes}m {seconds}s** inactive\\n\"\n                else:\n                    embed.description += f\"{channel.mention} **{minutes}m {seconds}s** inactive\\n\"\n\n            embed.set_footer(text=\"Please confirm these channels are free before posting\")\n        else:\n            embed.description = (\n                \"Doesn't look like any channels are available right now. \"\n                \"You're welcome to check for yourself to be sure. \"\n                \"If all channels are truly busy, please be patient \"\n                \"as one will likely be available soon.\"\n            )\n\n        await ctx.send(embed=embed)\n\n\ndef setup(bot: Bot) -> None:\n    \"\"\"Free cog load.\"\"\"\n    bot.add_cog(Free())\n    log.info(\"Cog loaded: Free\")\n", "path": "bot/cogs/free.py"}]}