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221 lines
9.2 KiB
Markdown
221 lines
9.2 KiB
Markdown
Mouse bindings are configurable, and there are a number of default assignments
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described below.
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The assignments are based around a triggering mouse event which may be combined
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with a set of modifier keys to produce an action.
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By default applications running in the terminal don't respond to the mouse.
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However, applications can emit escape sequences to request mouse event tracking.
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When mouse event tracking is enabled, mouse events are NOT matched against
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the mouse assignments and are instead passed through to the application.
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You can bypass the mouse reporting capture by holding down the `SHIFT` key;
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that will prevent the event from being passed to the application and allow matching
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it against your assignments as though the `SHIFT` key were not pressed.
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The [bypass_mouse_reporting_modifiers](lua/config/bypass_mouse_reporting_modifiers.md)
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option allows you to specify an alternative set of modifiers to use for
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bypassing mouse reporting capture.
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## Default Mouse Assignments
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*Note: you can run `wezterm show-keys` to show the effective key and mouse assignments*.
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In the table below, `Triple Left Down` means that the left mouse button is
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being triple clicked and that the event matches the downstroke of the third
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quick consecutive press. `Triple Left Up` matches the subsequent release event
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of that triple click, so for a triple click both
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`SelectTextAtMouseCursor="Line"` and `CompleteSelection` will be triggered in
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that order.
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NOTE: In the action column, `act` is an alias to `wezterm.action` (to avoid repetition).
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| Event | Modifiers | Action |
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| --------- | --- | ------ |
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| Triple Left Down | `NONE` | `act.SelectTextAtMouseCursor("Line")` |
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| Double Left Down | `NONE` | `act.SelectTextAtMouseCursor("Word")` |
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| Single Left Down | `NONE` | `act.SelectTextAtMouseCursor("Cell")` |
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| Single Left Down | `SHIFT` | `act.ExtendSelectionToMouseCursor("Cell")` |
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| Single Left Down | `ALT` | `act.SelectTextAtMouseCursor("Block")` (*since: 20220624-141144-bd1b7c5d*) |
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| Single Left Up | `SHIFT` | `act.CompleteSelectionOrOpenLinkAtMouseCursor("PrimarySelection")` |
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| Single Left Up | `NONE` | `act.CompleteSelectionOrOpenLinkAtMouseCursor("PrimarySelection")` |
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| Single Left Up | `ALT` | `act.CompleteSelection("PrimarySelection")` (*since: 20220624-141144-bd1b7c5d*) |
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| Double Left Up | `NONE` | `act.CompleteSelection("PrimarySelection")` |
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| Triple Left Up | `NONE` | `act.CompleteSelection("PrimarySelection")` |
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| Single Left Drag | `NONE` | `act.ExtendSelectionToMouseCursor("Cell")` |
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| Single Left Drag | `ALT` | `act.ExtendSelectionToMouseCursor("Block")` (*since: 20220624-141144-bd1b7c5d*) |
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| Single Left Down | `ALT+SHIFT` | `act.ExtendSelectionToMouseCursor("Block")` (*since: 20220624-141144-bd1b7c5d*) |
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| Single Left Up | `ALT+SHIFT` | `act.CompleteSelection("PrimarySelection")` (*since: 20220624-141144-bd1b7c5d*) |
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| Double Left Drag | `NONE` | `act.ExtendSelectionToMouseCursor("Word")` |
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| Triple Left Drag | `NONE` | `act.ExtendSelectionToMouseCursor("Line")` |
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| Single Middle Down | `NONE` | `act.PasteFrom("PrimarySelection")` |
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| Single Left Drag | `SUPER` | `act.StartWindowDrag` (*since 20210314-114017-04b7cedd*) |
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| Single Left Drag | `CTRL+SHIFT` | `act.StartWindowDrag` (*since 20210314-114017-04b7cedd*) |
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If you don't want the default assignments to be registered, you can
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disable all of them with this configuration; if you chose to do this,
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you must explicitly register every binding.
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```lua
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return {
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disable_default_mouse_bindings = true,
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}
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```
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## Configuring Mouse Assignments
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*since: 20200607-144723-74889cd4*
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You can define mouse actions using the `mouse_bindings` configuration section:
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```lua
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local wezterm = require 'wezterm'
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local act = wezterm.action
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return {
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mouse_bindings = {
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-- Right click sends "woot" to the terminal
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{
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event = { Down = { streak = 1, button = 'Right' } },
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mods = 'NONE',
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action = act.SendString 'woot',
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},
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-- Change the default click behavior so that it only selects
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-- text and doesn't open hyperlinks
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{
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event = { Up = { streak = 1, button = 'Left' } },
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mods = 'NONE',
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action = act.CompleteSelection 'PrimarySelection',
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},
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-- and make CTRL-Click open hyperlinks
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{
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event = { Up = { streak = 1, button = 'Left' } },
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mods = 'CTRL',
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action = act.OpenLinkAtMouseCursor,
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},
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-- NOTE that binding only the 'Up' event can give unexpected behaviors.
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-- Read more below on the gotcha of binding an 'Up' event only.
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},
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}
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```
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Each entry in the mouse binding table can have the following fields:
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* `event` - the mouse event on which to trigger. Described in detail below.
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* `mods` - the keyboard modifier keys that must be active in order to match the event.
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`mods` have the same definition and meaning as for key assignments and are described
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in more detail in [Configuring Key Assignments](keys.md#configuring-key-assignments).
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* `action` - the action to take when this mouse binding is matched
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* `mouse_reporting` - an optional boolean that defaults to `false`. This mouse binding
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entry will only be considered if the current pane's mouse reporting state matches.
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In general, you should avoid defining assignments that have
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`mouse_reporting=true` as it will prevent the application running in the
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pane from receiving that mouse event. You can, of course, define these and
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still send your mouse event to the pane by holding down the configured
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[mouse reporting bypass modifier
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key](lua/config/bypass_mouse_reporting_modifiers.md). (*Since: 20220807-113146-c2fee766*)
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* `alt_screen` - an optional field that defaults to `'Any'`, but that can also
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be set to either `true` or `false`. This mouse binding entry will only be
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considered if the current pane's alt screen state matches this field. Most
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of the default mouse assignments are defined as `alt_screen='Any'`, a notable
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exception being that mouse wheel scrolling only applies when
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`alt_screen=false`, as the mouse wheel is typically mapped to arrow keys by
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the terminal in alt screen mode. (*Since: 20220807-113146-c2fee766*).
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The `action` and `mods` portions are described in more detail in the key assignment
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information below.
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The `event` portion has three components:
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* Whether it is a `Down`, `Up` or `Drag` event
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* The number of consecutive clicks within the click threshold (the *click streak*)
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* The mouse button; `Left`, `Right`, or `Middle`.
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A double click is a `down-up-down` sequence where either the second button down
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is held for long enough or is released and no subsequent down event occurs
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within the click threshold. When recognized, it emits a `Down` event with
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`streak=2`. If the mouse is moved while the button is held, a `Drag` event
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with `streak=2` is generated. When the mouse button is released an `Up` event
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with `streak=2` is generated.
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The mouse event recognizer supports an arbitrary click streak, so if
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you wanted quadruple-click bindings you can specify `streak=4`.
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| Event | Lua Representation |
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| ----------------- | ------------------- |
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| Triple Left Down | `event={Down={streak=3, button="Left"}}` |
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| Double Left Up | `event={Up={streak=2, button="Left"}}` |
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| Single Left Drag | `event={Drag={streak=1, button="Left"}}` |
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*since: 20220807-113146-c2fee766*
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You can handle vertical wheel scroll events using the example shown below. The
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`streak` and amount associated with either `WheelUp` or `WheelDown` are set to
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`1` for the sake of simplicity of matching the event; you may use
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[`window:current_event`](lua/window/current_event.md), if to access the actual
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delta scroll value while handling the event.
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```lua
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local wezterm = require 'wezterm'
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local act = wezterm.action
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return {
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mouse_bindings = {
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-- Scrolling up while holding CTRL increases the font size
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{
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event = { Down = { streak = 1, button = { WheelUp = 1 } } },
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mods = 'CTRL',
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action = act.IncreaseFontSize,
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},
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-- Scrolling down while holding CTRL decreases the font size
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{
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event = { Down = { streak = 1, button = { WheelDown = 1 } } },
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mods = 'CTRL',
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action = act.DecreaseFontSize,
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},
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},
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}
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```
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# Gotcha on binding an 'Up' event only
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If you only have a mouse bind on the 'Up' event and not on the 'Down' event,
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the 'Down' event will still be sent to the running program.
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If that program is tracking mouse inputs (like tmux or vim with mouse support),
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you may experience _unintuitive behavior_ as the program receives the 'Down'
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event, but not the 'Up' event (which is bound to something in your config).
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To avoid this, it is recommended to disable the 'Down' event (to ensure it won't
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be sent to the running program), for example:
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```lua
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local wezterm = require 'wezterm'
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local act = wezterm.action
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return {
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mouse_bindings = {
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-- Bind 'Up' event of CTRL-Click to open hyperlinks
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{
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event = { Up = { streak = 1, button = 'Left' } },
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mods = 'CTRL',
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action = act.OpenLinkAtMouseCursor,
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},
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-- Disable the 'Down' event of CTRL-Click to avoid weird program behaviors
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{
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event = { Down = { streak = 1, button = 'Left' } },
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mods = 'CTRL',
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action = act.Nop,
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},
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},
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}
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```
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# Available Actions
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See the [`KeyAssignment` reference](lua/keyassignment/index.md) for information
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on available actions.
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