Class tag - awesome API documentation

# Class `tag`

awesome tag API

Furthermore to the classes described here, one can also use signals as described in signals.

Creating tags:

The default config initializes tags like this:

    awful.tag(
      { "1", "2", "3", "4", "5", "6", "7", "8", "9" },
      s,
      awful.layout.layouts[1]
    )

If you wish to have tags with different properties, then awful.tag.add is a better choice:

    awful.tag.add("First tag", {
        icon               = "/path/to/icon1.png",
        layout             = awful.layout.suit.tile,
        master_fill_policy = "master_width_factor",
        gap_single_client  = true,
        gap                = 15,
        screen             = s,
        selected           = true,
    })

    awful.tag.add("Second tag", {
        icon = "/path/to/icon2.png",
        layout = awful.layout.suit.max,
        screen = s,
    })

Note: the example above sets "First tag" to be selected explicitly, because otherwise you will find yourself without any selected tag.

Accessing tags:

To access the "current tags", use

    local tags = awful.screen.focused().selected_tags

See: `awful.screen.focused`

See: screen.selected_tags

To ignore the corner case where multiple tags are selected:

    local t = awful.screen.focused().selected_tag

See: screen.selected_tag

To get all tags for the focused screen:

    local tags = awful.screen.focused().tags

See: screen.tags

To get all tags:

    local tags = root.tags()

To get the current tag of the focused client:

    local t = client.focus and client.focus.first_tag or nil

See: client.focus See: client.first_tag

To get a tag from its name:

    local t = awful.tag.find_by_name(awful.screen.focused(), "name")

Common shortcuts:

Here is a few useful shortcuts not part of the default rc.lua. Add these functions above `-- {{{ Key bindings`:

Delete the current tag

    local function delete_tag()
        local t = awful.screen.focused().selected_tag
        if not t then return end
        t:delete()
    end

Create a new tag at the end of the list

    local function add_tag()
        awful.tag.add("NewTag", {
            screen = awful.screen.focused(),
            layout = awful.layout.suit.floating }):view_only()
    end

Rename the current tag

    local function rename_tag()
        awful.prompt.run {
            prompt       = "New tag name: ",
            textbox      = awful.screen.focused().mypromptbox.widget,
            exe_callback = function(new_name)
                if not new_name or #new_name == 0 then return end

                local t = awful.screen.focused().selected_tag
                if t then
                    t.name = new_name
                end
            end
        }
    end

Move the focused client to a new tag

    local function move_to_new_tag()
        local c = client.focus
        if not c then return end

        local t = awful.tag.add(c.class,{screen= c.screen })
        c:tags({t})
        t:view_only()
    end

Copy the current tag at the end of the list

    local function copy_tag()
        local t = awful.screen.focused().selected_tag
        if not t then return end

        local clients = t:clients()
        local t2 = awful.tag.add(t.name, awful.tag.getdata(t))
        t2:clients(clients)
        t2:view_only()
    end

And, in the `globalkeys` table:

    awful.key({ modkey,           }, "a", add_tag,
              {description = "add a tag", group = "tag"}),
    awful.key({ modkey, "Shift"   }, "a", delete_tag,
              {description = "delete the current tag", group = "tag"}),
    awful.key({ modkey, "Control"   }, "a", move_to_new_tag,
              {description = "add a tag with the focused client", group = "tag"}),
    awful.key({ modkey, "Mod1"   }, "a", copy_tag,
              {description = "create a copy of the current tag", group = "tag"}),
    awful.key({ modkey, "Shift"   }, "r", rename_tag,
              {description = "rename the current tag", group = "tag"}),

See the global keybindings for more information about the keybindings.

Some signal names are starting with a dot. These dots are artefacts from the documentation generation, you get the real signal name by removing the starting dot.

### Info:

- Copyright: 2008-2009 Julien Danjou
- Author: Julien Danjou <julien@danjou.info>

## Functions

awful.tag.add (name, props) | Add a tag.
awful.tag.new (names, screen, layout) | Create a set of tags and attach it to a screen.
awful.tag.find_fallback (screen, invalids) | Find a suitable fallback tag.
awful.tag.history.update (obj) | Update the tag history.
awful.tag.history.restore (screen, idx) | Revert tag history.
awful.tag.incmwfact (add, t) | Increase master width factor.
awful.tag.incgap (add, t) | Increase the spacing between clients
awful.tag.togglemfpol (t) | Toggle size fill policy for the master client(s) between "expand" and "masterwidthfactor".
awful.tag.incnmaster (add[, t[, sensible=false]]) | Increase the number of master windows.
awful.tag.incncol (add[, t[, sensible=false]]) | Increase number of column windows.
awful.tag.viewnone ([screen]) | View no tag.
awful.tag.viewidx (i[, screen]) | View a tag by its taglist index.
awful.tag.viewnext (screen) | View next tag.
awful.tag.viewprev (screen) | View previous tag.
awful.tag.viewmore (tags[, screen[, maximum=#tags]]) | View only a set of tags.
awful.tag.viewtoggle (t) | Toggle selection of a tag
awful.tag.attached_connect_signal (screen[, signal[, Callback]]) | Add a signal to all attached tags and all tags that will be attached in the future.

## Object properties

name | Tag name.
selected | True if the tag is selected to be viewed.
activated | True if the tag is active and can be used.
index | The tag index.
screen | The tag screen.
master_width_factor | The tag master width factor.
layout | The tag client layout.
layouts | The (proposed) list of available layouts for this tag.
volatile | Define if the tag must be deleted when the last client is untagged.
gap | The gap (spacing, also called useless_gap) between clients.
gap_single_client | Enable gaps for a single client.
master_fill_policy | Set size fill policy for the master client(s).
master_count | Set the number of master windows.
icon | Set the tag icon.
column_count | Set the number of columns.

## Signals

request::select |
tagged | When a client gets tagged with this tag.
untagged | When a client gets untagged with this tag.
property::urgent | True when a tagged client is urgent
property::urgent_count | The number of urgent tagged clients
request::screen | Emitted when a screen is removed.
removal-pending | Emitted after request::screen if no new screen has been set.

## Theme variables

beautiful.master_width_factor | The default master width factor
beautiful.useless_gap | The default gap.
beautiful.gap_single_client | Enable gaps for a single client.
beautiful.master_fill_policy | The default fill policy.
beautiful.master_count | The default number of master windows.
beautiful.column_count | The default number of columns.

## Deprecated functions

awful.tag.move [deprecated] | Move a tag to an absolute position in the screen[]:tags() table.
awful.tag.swap [deprecated] | Swap 2 tags
awful.tag.delete [deprecated] | Delete a tag.
awful.tag.gettags [deprecated] | Get a list of all tags on a screen
awful.tag.setscreen [deprecated] | Set a tag's screen
awful.tag.getscreen [deprecated] | Get a tag's screen
awful.tag.selectedlist [deprecated] | Return a table with all visible tags
awful.tag.selected [deprecated] | Return only the first visible tag.
awful.tag.setmwfact [deprecated] | Set master width factor.
awful.tag.getmwfact [deprecated] | Get master width factor.
awful.tag.setlayout [deprecated] | Set layout.
awful.tag.setvolatile [deprecated] | Set if the tag must be deleted when the last client is untagged
awful.tag.getvolatile [deprecated] | Get if the tag must be deleted when the last client closes
awful.tag.setgap [deprecated] | Set the spacing between clients
awful.tag.getgap [deprecated] | Get the spacing between clients.
awful.tag.setmfpol [deprecated] | Set size fill policy for the master client(s)
awful.tag.getmfpol [deprecated] | Get size fill policy for the master client(s)
awful.tag.setnmaster [deprecated] |
awful.tag.getnmaster [deprecated] | Get the number of master windows.
awful.tag.seticon [deprecated] | Set the tag icon
awful.tag.geticon [deprecated] | Get the tag icon
awful.tag.setncol [deprecated] | Set number of column windows.
awful.tag.getncol [deprecated] | Get number of column windows.
awful.tag.getidx [deprecated] | Get a tag's index in the gettags() table.
awful.tag.viewonly [deprecated] | View only a tag.
awful.tag.getdata [deprecated] | Get tag data table.
awful.tag.getproperty [deprecated] | Get a tag property.
awful.tag.setproperty [deprecated] | Set a tag property.
awful.tag.withcurrent [deprecated] | Tag a client with the set of current tags.

## Fields

awful.tag.history.limit | The number of elements kept in the history.
awful.tag.layouts | An ordered list of layouts.

## Methods

tag:instances () | Get the number of instances.
tag:clients (clients_table) | Get or set the clients attached to this tag.
tag:disconnect_signal (name, func) | Disconnect from a signal.
tag:emit_signal (name, ...) | Emit a signal.
tag:connect_signal (name, func) | Connect to a signal.
tag:swap (tag2) | Swap 2 tags
tag:delete ([fallback_tag=awful.tag.find_fallback()[, force=false]]) | Delete a tag.
tag:find_by_name (s, name) | Find a tag by name.
tag:view_only () | View only a tag.

## Functions

Methods

awful.tag.add (name, props)

  Add a tag.

  This function allow to create tags from a set of properties:

      local t = awful.tag.add("my new tag", {
          screen = screen.primary,
          layout = awful.layout.suit.max,
      })

  - name The tag name, a string
  - props The tags inital properties, a table

  ### Returns:

  The created tag

  ### See also:

  tag.delete
awful.tag.new (names, screen, layout)
  Create a set of tags and attach it to a screen.
  - names The tag name, in a table
  - screen The tag screen, or 1 if not set.
  - layout The layout or layout table to set for this tags by default.

  ### Returns:

  A table with all created tags.
awful.tag.find_fallback (screen, invalids)
  Find a suitable fallback tag.
  - screen The screen to look for a tag on. [awful.screen.focused()]
  - invalids A table of tags we consider unacceptable. [selectedlist(scr)]
awful.tag.history.update (obj)
  Update the tag history.
  - obj Screen object.
awful.tag.history.restore (screen, idx)
  Revert tag history.
  - screen The screen.
  - idx Index in history. Defaults to "previous" which is a special index toggling between last two selected sets of tags. Number (eg 1) will go back to the given index in history.
awful.tag.incmwfact (add, t)
  Increase master width factor.
  - add Value to add to master width factor.
  - t The tag to modify, if null tag.selected() is used.

  ### See also:

  tag.master_width_factor
awful.tag.incgap (add, t)
  Increase the spacing between clients
  - add Value to add to the spacing between clients
  - t The tag to modify, if null tag.selected() is used.

  ### See also:

  tag.gap
awful.tag.togglemfpol (t)
  Toggle size fill policy for the master client(s) between "expand" and "masterwidthfactor".
  - t tag The tag to modify, if null tag.selected() is used.

  ### See also:

  tag.master_fill_policy
awful.tag.incnmaster (add[, t[, sensible=false]])
  Increase the number of master windows.
  - add Value to add to number of master windows.
  - t The tag to modify, if null tag.selected() is used. (optional)
  - sensible boolean Limit nmaster based on the number of visible tiled windows? (default false)

  ### See also:

  tag.master_count
awful.tag.incncol (add[, t[, sensible=false]])
  Increase number of column windows.
  - add Value to add to number of column windows.
  - t The tag to modify, if null tag.selected() is used. (optional)
  - sensible boolean Limit column_count based on the number of visible tiled windows? (default false)
awful.tag.viewnone ([screen])
  View no tag.
  - screen int or screen The screen. (optional)
awful.tag.viewidx (i[, screen])
  View a tag by its taglist index.

  This is equivalent to `screen.tags[i]:view_only()`

  - i The relative index to see.
  - screen The screen. (optional)

  ### See also:

  screen.tags
awful.tag.viewnext (screen)
  View next tag. This is the same as tag.viewidx(1).
  - screen The screen.
awful.tag.viewprev (screen)
  View previous tag. This is the same a tag.viewidx(-1).
  - screen The screen.
awful.tag.viewmore (tags[, screen[, maximum=#tags]])
  View only a set of tags.

  If `maximum` is set, there will be a limit on the number of new tag being selected. The tags already selected do not count. To do nothing if one or more of the tags are already selected, set `maximum` to zero.

  - tags A table with tags to view only.
  - screen The screen of the tags. (optional)
  - maximum number The maximum number of tags to select. (default #tags)
awful.tag.viewtoggle (t)
  Toggle selection of a tag
  - t tag Tag to be toggled

  ### See also:

  tag.selected
awful.tag.attached_connect_signal (screen[, signal[, Callback]])
  Add a signal to all attached tags and all tags that will be attached in the future. When a tag is detached from the screen, its signal is removed.
  - screen screen The screen concerned, or all if nil.
  - signal string The signal name. (optional)
  - Callback function (optional)

## Object properties

name

  Tag name.

  Signal:

  - property::name

  ### Type:

  - string
selected

  True if the tag is selected to be viewed.

  Signal:

  - property::selected

  ### Type:

  - boolean
activated

  True if the tag is active and can be used.

  Signal:

  - property::activated

  ### Type:

  - boolean
index

  The tag index.

  The index is the position as shown in the awful.widget.taglist.

  Signal:

  - property::index

  ### Type:

  - integer
screen

  The tag screen.

  Signal:

  - property::screen

  ### Type:

  - screen

  ### See also:

  screen
master_width_factor

  The tag master width factor.

  The master width factor is one of the 5 main properties used to configure the layout. Each layout interpret (or ignore) this property differenly.

  See the layout suit documentation for information about how the master width factor is used.

  Signal:

  - property::mwfact (deprecated)
  - *property::masterwidthfactor*

  ### Type:

  - number Between 0 and 1

  ### See also:

  - tag.master_count
  - tag.column_count
  - tag.master_fill_policy
  - tag.gap
layout

  The tag client layout.

  This property hold the layout. A layout can be either stateless or stateful. Stateless layouts are used by default by Awesome. They tile clients without any other overhead. They take an ordered list of clients and place them on the screen. Stateful layouts create an object instance for each tags and can store variables and metadata. Because of this, they are able to change over time and be serialized (saved).

  Both types of layouts have valid usage scenarios.

  Stateless layouts:

  These layouts are stored in `awful.layout.suit`. They expose a table with 2 fields:

  - name (string): The layout name. This should be unique.
  - arrange (function): The function called when the clients need to be placed. The only parameter is a table or arguments returned by awful.layout.parameters

  Stateful layouts:

  The stateful layouts API is the same as stateless, but they are a function returining a layout instead of a layout itself. They also should have an `is_dynamic = true` property. If they don't, awful.tag will create a new instance everytime the layout is set. If they do, the instance will be cached and re-used.

  Signal:

  - property::layout

  ### Type:

  - layout tag.layout or function A layout table or a constructor function

  ### See also:

  awful.tag.layouts
layouts
  The (proposed) list of available layouts for this tag.

  This property allows to define a subset (or superset) of layouts available in the "rotation table". In the default configuration file, `Mod4+Space` and `Mod4+Shift+Space` are used to switch between tags. The awful.widget.layoutlist also uses this as its default layout filter.

  By default, it will be the same as awful.layout.layouts unless there the a layout not present is used. If that's the case they will be added at the front of the list.

  ### Type:

  - table

  ### See also:

  - awful.layout.layouts
  - tag.layout
volatile

  Define if the tag must be deleted when the last client is untagged.

  This is useful to create "throw-away" tags for operation like 50/50 side-by-side views.

      local t = awful.tag.add("Temporary", {
           screen   = client.focus.screen,
           volatile = true,
           clients  = {
               client.focus,
               awful.client.focus.history.get(client.focus.screen, 1)
           }
      }

  Signal:

  - property::volatile

  ### Type:

  - boolean
gap

  The gap (spacing, also called useless_gap) between clients.

  This property allow to waste space on the screen in the name of style, unicorns and readability.

  Signal:

  - *property::useless_gap*

  ### Type:

  - number The value has to be greater than zero.

  ### See also:

  tag.gap_single_client
gap_single_client

  Enable gaps for a single client.

  Signal:

  - property::gap_single_client

  ### Type:

  - boolean Enable gaps for a single client
master_fill_policy

  Set size fill policy for the master client(s).

  * Possible values*:

  - expand: Take all the space
  - *masterwidthfactor*: Only take the ratio defined by the master_width_factor

  Signal:

  - *property::masterfillpolicy*

  ### Type:

  - string "expand" or "masterwidthfactor"
master_count

  Set the number of master windows.

  Signal:

  - property::nmaster (deprecated)
  - *property::master_count*

  ### Type:

  - integer nmaster Only positive values are accepted
icon

  Set the tag icon.

  Signal:

  - property::icon

  ### Type:

  - icon path or surface The icon
column_count

  Set the number of columns.

  Signal:

  - property::ncol (deprecated)
  - *property::column_count*

  ### Type:

  - ncol integer Has to be greater than 1

## Signals

request::select
tagged
  When a client gets tagged with this tag.

  ### Arguments:

  - c client.object The tagged client.
untagged
  When a client gets untagged with this tag.

  ### Arguments:

  - c client.object The untagged client.
property::urgent
  True when a tagged client is urgent

  ### See also:

  client.urgent
property::urgent_count
  The number of urgent tagged clients

  ### See also:

  client.urgent
request::screen
  Emitted when a screen is removed. This can be used to salvage existing tags by moving them to a new screen (or creating a virtual screen). By default, there is no handler for this request. The tags will be deleted. To prevent this, an handler for this request must simply set a new screen for the tag.
removal-pending
  Emitted after request::screen if no new screen has been set. The tag will be deleted, this is a last chance to move its clients before they are sent to a fallback tag. Connect to request::screen if you wish to salvage the tag.

## Theme variables

beautiful.master_width_factor
  The default master width factor

  ### Type:

  - number (default: 0.5)

  ### See also:

  - tag.master_width_factor
  - tag.gap
beautiful.useless_gap
  The default gap.

  ### Type:

  - number (default: 0)

  ### See also:

  - tag.gap
  - tag.gap_single_client
beautiful.gap_single_client
  Enable gaps for a single client.

  ### Type:

  - boolean (default: true)

  ### See also:

  - tag.gap
  - tag.gap_single_client
beautiful.master_fill_policy

  The default fill policy.

  * Possible values*:

  - expand: Take all the space
  - *masterwidthfactor*: Only take the ratio defined by the master_width_factor

  ### Type:

  - string (default: "expand")

  ### See also:

  tag.master_fill_policy
beautiful.master_count
  The default number of master windows.

  ### Type:

  - integer (default: 1)

  ### See also:

  tag.master_count
beautiful.column_count
  The default number of columns.

  ### Type:

  - integer (default: 1)

  ### See also:

  tag.column_count

## Deprecated functions

awful.tag.move [deprecated]
  Move a tag to an absolute position in the screen[]:tags() table.

  ### param:

  - new_index Integer absolute position in the table to insert.
  - target_tag The tag that should be moved. If null, the currently selected tag is used.

  ### See also:

  tag.index
awful.tag.swap [deprecated]
  Swap 2 tags

  ### param:

  - tag1 The first tag
  - tag2 The second tag

  ### See also:

  tag.swap
awful.tag.delete [deprecated]
  Delete a tag.

  ### param:

  - target_tag Optional tag object to delete. [selected()]
  - fallback_tag Tag to assign stickied tags to. [~selected()]

  ### See also:

  tag.delete
awful.tag.gettags [deprecated]
  Get a list of all tags on a screen

  ### param:

  - s screen Screen

  ### See also:

  screen.tags
awful.tag.setscreen [deprecated]
  Set a tag's screen

  ### param:

  - s Screen
  - t tag object

  ### See also:

  screen
awful.tag.getscreen [deprecated]
  Get a tag's screen

  ### param:

  - t tag object (optional)

  ### See also:

  screen
awful.tag.selectedlist [deprecated]
  Return a table with all visible tags

  ### param:

  - s Screen.

  ### See also:

  screen.selected_tags
awful.tag.selected [deprecated]
  Return only the first visible tag.

  ### param:

  - s Screen.

  ### See also:

  screen.selected_tag
awful.tag.setmwfact [deprecated]
  Set master width factor.

  ### param:

  - mwfact Master width factor.
  - t The tag to modify, if null tag.selected() is used.

  ### See also:

  - tag.master_fill_policy
  - tag.master_width_factor
awful.tag.getmwfact [deprecated]
  Get master width factor.

  ### param:

  - t The tag. (optional)

  ### See also:

  - tag.master_width_factor
  - tag.master_fill_policy
awful.tag.setlayout [deprecated]
  Set layout.

  ### param:

  - layout a layout table or a constructor function
  - t The tag to modify

  ### See also:

  tag.layout
awful.tag.setvolatile [deprecated]
  Set if the tag must be deleted when the last client is untagged

  ### param:

  - volatile boolean If the tag must be deleted when the last client is untagged
  - t The tag to modify, if null tag.selected() is used.

  ### See also:

  tag.volatile
awful.tag.getvolatile [deprecated]
  Get if the tag must be deleted when the last client closes

  ### param:

  - t The tag to modify, if null tag.selected() is used.

  ### See also:

  tag.volatile
awful.tag.setgap [deprecated]
  Set the spacing between clients

  ### param:

  - useless_gap The spacing between clients
  - t The tag to modify, if null tag.selected() is used.

  ### See also:

  tag.gap
awful.tag.getgap [deprecated]
  Get the spacing between clients.

  ### param:

  - t tag The tag. (default tag.selected())
  - numclients int Number of (tiled) clients. Passing this will return 0 for a single client. You can override this function to change this behavior. (optional)

  ### See also:

  tag.gap
awful.tag.setmfpol [deprecated]
  Set size fill policy for the master client(s)

  ### param:

  - policy string Can be set to "expand" (fill all the available workarea) or "masterwidthfactor" (fill only an area inside the master width factor)
  - t tag The tag to modify (default tag.selected())

  ### See also:

  tag.master_fill_policy
awful.tag.getmfpol [deprecated]
  Get size fill policy for the master client(s)

  ### param:

  - t tag The tag (default tag.selected())

  ### See also:

  tag.master_fill_policy
awful.tag.setnmaster [deprecated]

  ### param:

  - nmaster The number of master windows.
  - t The tag. (optional)

  ### See also:

  tag.master_count
awful.tag.getnmaster [deprecated]
  Get the number of master windows.

  ### param:

  - t The tag. (optional)

  ### See also:

  tag.master_count
awful.tag.seticon [deprecated]
  Set the tag icon

  ### param:

  - icon the icon to set, either path or image object
  - _tag the tag

  ### See also:

  tag.icon
awful.tag.geticon [deprecated]
  Get the tag icon

  ### param:

  - _tag the tag

  ### See also:

  tag.icon
awful.tag.setncol [deprecated]
  Set number of column windows.

  ### param:

  - ncol The number of column.
  - t The tag to modify, if null tag.selected() is used.

  ### See also:

  tag.column_count
awful.tag.getncol [deprecated]
  Get number of column windows.

  ### param:

  - t The tag. (optional)

  ### See also:

  tag.column_count
awful.tag.getidx [deprecated]
  Get a tag's index in the gettags() table.

  ### param:

  - query_tag The tag object to find. [selected()]

  ### See also:

  tag.index
awful.tag.viewonly [deprecated]
  View only a tag.

  ### param:

  - t The tag object.

  ### See also:

  tag.view_only
awful.tag.getdata [deprecated]
  Get tag data table.

  Do not use.

  ### param:

  - _tag tag The tag.
awful.tag.getproperty [deprecated]
  Get a tag property.

  Use `_tag.prop` directly.

  ### param:

  - _tag tag The tag.
  - prop string The property name.
awful.tag.setproperty [deprecated]
  Set a tag property. This properties are internal to awful. Some are used to draw taglist, or to handle layout, etc.

  Use `_tag.prop = value`

  ### param:

  - _tag The tag.
  - prop The property name.
  - value The value.
awful.tag.withcurrent [deprecated]
  Tag a client with the set of current tags.

  ### param:

  - c The client to tag.

## Fields

awful.tag.history.limit
  The number of elements kept in the history.
  - limit integer (default 20)
awful.tag.layouts

  An ordered list of layouts. `awful.tag.layout` Is usually defined in rc.lua. It store the list of layouts used when selecting the previous and next layouts. This is the default:

       -- Table of layouts to cover with awful.layout.inc, order matters.
       awful.layout.layouts = {
           awful.layout.suit.floating,
           awful.layout.suit.tile,
           awful.layout.suit.tile.left,
           awful.layout.suit.tile.bottom,
           awful.layout.suit.tile.top,
           awful.layout.suit.fair,
           awful.layout.suit.fair.horizontal,
           awful.layout.suit.spiral,
           awful.layout.suit.spiral.dwindle,
           awful.layout.suit.max,
           awful.layout.suit.max.fullscreen,
           awful.layout.suit.magnifier,
           awful.layout.suit.corner.nw,
           -- awful.layout.suit.corner.ne,
           -- awful.layout.suit.corner.sw,
           -- awful.layout.suit.corner.se,
       }

## Methods

tag:instances ()
  Get the number of instances.

  ### Returns:

  The number of tag objects alive.
tag:clients (clients_table)
  Get or set the clients attached to this tag.
  - clients_table None or a table of clients to set as being tagged with this tag.

  ### Returns:

  A table with the clients attached to this tags.
tag:disconnect_signal (name, func)
  Disconnect from a signal.
  - name string The name of the signal.
  - func function The callback that should be disconnected.
tag:emit_signal (name, ...)
  Emit a signal.
  - name string The name of the signal.
  - ... Extra arguments for the callback functions. Each connected function receives the object as first argument and then any extra arguments that are given to emit_signal().
tag:connect_signal (name, func)
  Connect to a signal.
  - name string The name of the signal.
  - func function The callback to call when the signal is emitted.
tag:swap (tag2)
  Swap 2 tags
  - tag2 The second tag

  ### See also:

  client.swap
tag:delete ([fallback_tag=awful.tag.find_fallback()[, force=false]])

  Delete a tag.

  To delete the current tag:

      mouse.screen.selected_tag:delete()

  - fallback_tag tag Tag to assign stickied tags to. (default awful.tag.find_fallback())
  - force boolean Move even non-sticky clients to the fallback tag. (default false)

  ### Returns:

  Returns true if the tag is successfully deleted. If there are no clients exclusively on this tag then delete it. Any stickied clients are assigned to the optional 'fallback_tag'. If after deleting the tag there is no selected tag, try and restore from history or select the first tag on the screen.

  ### See also:

  - awful.tag.add
  - awful.tag.find_fallback
tag:find_by_name (s, name)
  Find a tag by name.
  - s screen The screen of the tag
  - name string The name of the tag

  ### Returns:

  The tag found, or `nil`

  ### Usage:

      -- For the current screen
      local t = awful.tag.find_by_name(awful.screen.focused(), "name")

      -- For a screen index
      local t = awful.tag.find_by_name(screen[1], "name")

      -- For all screens
      local t = awful.tag.find_by_name(nil, "name")

tag:view_only ()
  View only a tag.

  ### See also:

  tag.selected

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