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Opacity setting for Alacritty does not work. Alacritty is always opaque. #3641

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@ironfish

Description

@ironfish

For bug reports, the following information can help speed up the process. Please describe the bug that you have found and what you would expect to happen instead.

System

OS: macOS Catalina Version 10.15.4
Version: alacritty 0.4.2 (f68de37)

Problem

====================================================================
Opacity regardless of the setting 0.0 to 0.1 does nothing. Alacritty is always opaque.

Logs

??? what does this mean? Do you want the log files uploaded or pasted in the issue?

alacritty -vv

====================================================================
] ➜ ./alacritty -vv
Created log file at "/var/folders/hx/rrqx_vb974l122tgflvqmqx80000gn/T/Alacritty-23840.log"
[2020-04-25 17:21:53.088098000] [INFO] Welcome to Alacritty
[2020-04-25 17:21:53.088307000] [INFO] Configuration loaded from "/Users/duncandevore/.config/alacritty/alacritty.yml"
[2020-04-25 17:21:53.127118000] [DEBUG] Estimated DPR: 2
[2020-04-25 17:21:53.127225000] [DEBUG] Estimated Cell Size: 14 x 30
[2020-04-25 17:21:53.127291000] [DEBUG] Estimated Dimensions: Some((1840, 1820))
[2020-04-25 17:21:53.181651000] [INFO] Device pixel ratio: 2
[2020-04-25 17:21:53.184050000] [INFO] Initializing glyph cache...
[2020-04-25 17:21:53.214303000] [INFO] ... finished initializing glyph cache in 0.030178688s
[2020-04-25 17:21:53.214362000] [INFO] Estimated DPR correctly, skipping resize
[2020-04-25 17:21:53.214385000] [INFO] Cell Size: 14 x 30
[2020-04-25 17:21:53.214402000] [INFO] Padding: 10 x 10
[2020-04-25 17:21:53.214423000] [INFO] Width: 1840, Height: 1820
[2020-04-25 17:21:53.214482000] [INFO] PTY Dimensions: Line(60) x Column(130)
[2020-04-25 17:21:53.217379000] [INFO] Initialisation complete

Keyboard and bindings: alacritty --print-events

===================================================================
] ➜ ./alacritty --print-events
Created log file at "/var/folders/hx/rrqx_vb974l122tgflvqmqx80000gn/T/Alacritty-35219.log"
[2020-04-25 17:25:27.049063000] [INFO] Welcome to Alacritty
[2020-04-25 17:25:27.049323000] [INFO] Configuration loaded from "/Users/duncandevore/.config/alacritty/alacritty.yml"
[2020-04-25 17:25:27.150646000] [INFO] Device pixel ratio: 2
[2020-04-25 17:25:27.153120000] [INFO] Initializing glyph cache...
[2020-04-25 17:25:27.181587000] [INFO] ... finished initializing glyph cache in 0.028404623s
[2020-04-25 17:25:27.181644000] [INFO] Estimated DPR correctly, skipping resize
[2020-04-25 17:25:27.181665000] [INFO] Cell Size: 14 x 30
[2020-04-25 17:25:27.181682000] [INFO] Padding: 10 x 10
[2020-04-25 17:25:27.181699000] [INFO] Width: 1840, Height: 1820
[2020-04-25 17:25:27.181750000] [INFO] PTY Dimensions: Line(60) x Column(130)
[2020-04-25 17:25:27.184396000] [INFO] Initialisation complete
[2020-04-25 17:25:27.206551000] [INFO] glutin event: NewEvents(Init)
[2020-04-25 17:25:27.363288000] [INFO] glutin event: MainEventsCleared
[2020-04-25 17:25:27.363331000] [INFO] glutin event: RedrawRequested(WindowId(Id(140271810669376)))
[2020-04-25 17:25:27.363352000] [INFO] glutin event: RedrawEventsCleared
[2020-04-25 17:25:27.381633000] [INFO] glutin event: NewEvents(WaitCancelled { start: Instant { t: 687186466284 }, requested_resume: None })
[2020-04-25 17:25:27.382270000] [INFO] glutin event: MainEventsCleared
[2020-04-25 17:25:27.382359000] [INFO] glutin event: RedrawEventsCleared
[2020-04-25 17:25:27.382422000] [INFO] glutin event: NewEvents(WaitCancelled { start: Instant { t: 687187288784 }, requested_resume: None })
[2020-04-25 17:25:27.444879000] [INFO] glutin event: WindowEvent { window_id: WindowId(Id(140271810669376)), event: Focused(true) }
[2020-04-25 17:25:27.444939000] [INFO] glutin event: MainEventsCleared
[2020-04-25 17:25:27.444977000] [INFO] glutin event: RedrawEventsCleared
[2020-04-25 17:25:27.446383000] [INFO] glutin event: NewEvents(WaitCancelled { start: Instant { t: 687251231708 }, requested_resume: None })
[2020-04-25 17:25:27.446465000] [INFO] glutin event: MainEventsCleared
[2020-04-25 17:25:27.446491000] [INFO] glutin event: RedrawEventsCleared
[2020-04-25 17:25:27.446514000] [INFO] glutin event: NewEvents(WaitCancelled { start: Instant { t: 687251380401 }, requested_resume: None })
[2020-04-25 17:25:27.446611000] [INFO] glutin event: MainEventsCleared
[2020-04-25 17:25:27.446639000] [INFO] glutin event: RedrawEventsCleared
[2020-04-25 17:25:27.446663000] [INFO] glutin event: NewEvents(WaitCancelled { start: Instant { t: 687251528891 }, requested_resume: None })
[2020-04-25 17:25:27.446699000] [INFO] glutin event: MainEventsCleared
[2020-04-25 17:25:27.446721000] [INFO] glutin event: RedrawEventsCleared
[2020-04-25 17:25:27.487916000] [INFO] glutin event: NewEvents(WaitCancelled { start: Instant { t: 687251609743 }, requested_resume: None })
[2020-04-25 17:25:27.487966000] [INFO] glutin event: UserEvent(Title("fish /Users/duncandevore"))
[2020-04-25 17:25:27.487987000] [INFO] glutin event: UserEvent(Wakeup)
[2020-04-25 17:25:27.488004000] [INFO] glutin event: MainEventsCleared
[2020-04-25 17:25:27.488018000] [INFO] glutin event: RedrawEventsCleared
........

### alacritty.yml
====================================================================
# Configuration for Alacritty, the GPU enhanced terminal emulator.

# Any items in the `env` entry below will be added as
# environment variables. Some entries may override variables
# set by alacritty itself.
#env:
  # TERM variable
  #
  # This value is used to set the `$TERM` environment variable for
  # each instance of Alacritty. If it is not present, alacritty will
  # check the local terminfo database and use `alacritty` if it is
  # available, otherwise `xterm-256color` is used.
  #TERM: xterm-256color

window:
  # Window dimensions (changes require restart)
  #
  # Specified in number of columns/lines, not pixels.
  # If both are `0`, this setting is ignored.
  dimensions:
    columns: 130
    lines: 60

  # Window position (changes require restart)
  #
  # Specified in number of pixels.
  # If the position is not set, the window manager will handle the placement.
  #position:
  #  x: 0
  #  y: 0

  # Window padding (changes require restart)
  #
  # Blank space added around the window in pixels. This padding is scaled
  # by DPI and the specified value is always added at both opposing sides.
  padding:
    x: 5
    y: 5

  # Spread additional padding evenly around the terminal content.
  dynamic_padding: true

  # Window decorations
  #
  # Values for `decorations`:
  #     - full: Borders and title bar
  #     - none: Neither borders nor title bar
  #
  # Values for `decorations` (macOS only):
  #     - transparent: Title bar, transparent background and title bar buttons
  #     - buttonless: Title bar, transparent background, but no title bar buttons
  # decorations: transparent

  # Startup Mode (changes require restart)
  #
  # Values for `startup_mode`:
  #   - Windowed
  #   - Maximized
  #   - Fullscreen
  #
  # Values for `startup_mode` (macOS only):
  #   - SimpleFullscreen
  startup_mode: Windowed

  # Window title
  #title: Alacritty

  # Window class (Linux only):
  #class: Alacritty

scrolling:
  # Maximum number of lines in the scrollback buffer.
  # Specifying '0' will disable scrolling.
  history: 100000

  # Number of lines the viewport will move for every line scrolled when
  # scrollback is enabled (history > 0).
  multiplier: 3

  # Faux Scrolling
  #
  # The `faux_multiplier` setting controls the number of lines the terminal
  # should scroll when the alternate screen buffer is active. This is used
  # to allow mouse scrolling for applications like `man`.
  #
  # Specifying `0` will disable faux scrolling.
  multiplier: 3

# Font configuration (changes require restart)
font:

  # Normal (roman) font face
  normal:
    # family: "JetBrainsMono Nerd Font Mono"
    # family: "Hack iCursive S12"
    family: "Fantasque iCursive Opf"
    style: Regular

  # Bold font face
  bold:
    # family: "JetBrainsMono Nerd Font Mono"
    # family: "Hack iCursive S12"
    family: "Fantasque iCursive Opf"
    style: Bold

  # Italic font face
  italic:
    # family: "JetBrainsMono Nerd Font Mono"
    # family: "Hack iCursive S12"
    family: "Fantasque iCursive Opf"
    style: Book Italic

  # Point size
  size: 14.0

  # Offset is the extra space around each character. `offset.y` can be thought of
  # as modifying the line spacing, and `offset.x` as modifying the letter spacing.
  offset:
    x: 0
    y: 1

  # Glyph offset determines the locations of the glyphs within their cells with
  # the default being at the bottom. Increasing `x` moves the glyph to the right,
  # increasing `y` moves the glyph upwards.
  glyph_offset:
    x: 0
    y: 0

  # Thin stroke font rendering (macOS only)
  #
  # Thin strokes are suitable for retina displays, but for non-retina screens
  # it is recommended to set `use_thin_strokes` to `false`
  #
  # macOS >= 10.14.x:
  #
  # If the font quality on non-retina display looks bad then set
  # `use_thin_strokes` to `true` and enable font smoothing by running the
  # following command:
  #   `defaults write -g CGFontRenderingFontSmoothingDisabled -bool NO`
  #
  # This is a global setting and will require a log out or restart to take
  # effect.
  use_thin_strokes: true

# If `true`, bold text is drawn using the bright color variants.
draw_bold_text_with_bright_colors: true

schemes:
# Colors (Tomorrow Night Bright)
  tomorrownight: &tomorrownight
  # Default colors
    primary:
      background: '0x000000'
      foreground: '0xeaeaea'

      # Bright and dim foreground colors
      #
      # The dimmed foreground color is calculated automatically if it is not present.
      # If the bright foreground color is not set, or `draw_bold_text_with_bright_colors`
      # is `false`, the normal foreground color will be used.
      #dim_foreground: '0x9a9a9a'
      #bright_foreground: '0xffffff'

    # Cursor colors
    #
    # Colors which should be used to draw the terminal cursor. If these are unset,
    # the cursor color will be the inverse of the cell color.
    #cursor:
    #  text: '0x000000'
    #  cursor: '0xffffff'

    # Selection colors
    #
    # Colors which should be used to draw the selection area. If selection
    # background is unset, selection color will be the inverse of the cell colors.
    # If only text is unset the cell text color will remain the same.
    #selection:
    #  text: '0xeaeaea'
    #  background: '0x404040'


    # Normal colors
    normal:
      black:   '0x000000'
      red:     '0xd54e53'
      green:   '0xb9ca4a'
      yellow:  '0xe6c547'
      blue:    '0x7aa6da'
      magenta: '0xc397d8'
      cyan:    '0x70c0ba'
      white:   '0xeaeaea'

    # Bright colors
    bright:
      black:   '0x666666'
      red:     '0xff3334'
      green:   '0x9ec400'
      yellow:  '0xe7c547'
      blue:    '0x7aa6da'
      magenta: '0xb77ee0'
      cyan:    '0x54ced6'
      white:   '0xffffff'

    # Dim colors
    #
    # If the dim colors are not set, they will be calculated automatically based
    # on the `normal` colors.
    #dim:
    #  black:   '0x000000'
    #  red:     '0x8c3336'
    #  green:   '0x7a8530'
    #  yellow:  '0x97822e'
    #  blue:    '0x506d8f'
    #  magenta: '0x80638e'
    #  cyan:    '0x497e7a'
    #  white:   '0x9a9a9a'

    # Indexed Colors
    #
    # The indexed colors include all colors from 16 to 256.
    # When these are not set, they're filled with sensible defaults.
    #
    # Example:
    #   `- { index: 16, color: '0xff00ff' }`
    #
    indexed_colors: []

  # Colors (Tender [dark only])
  tender: &tender
    primary:
      background: '0x282828'
      foreground: '0xeeeeee'

    normal:
      black:   '0x282828'
      red:     '0xf43753'
      green:   '0xc9d05c'
      yellow:  '0xffc24b'
      blue:    '0xb3deef'
      magenta: '0xd3b987'
      cyan:    '0x73cef4'
      white:   '0xeeeeee'

    bright:
      black:   '0x4c4c4c'
      red:     '0xf43753'
      green:   '0xc9d05c'
      yellow:  '0xffc24b'
      blue:    '0xb3deef'
      magenta: '0xd3b987'
      cyan:    '0x73cef4'
      white:   '0xfeffff'

  # Colors (One Half Light)
  onehalflight: &onehalflight
    primary:
      background: '0xfafafa'
      foreground: '0x383a42'

    normal:
      black: '0x383a42'
      red: '0xe45649'
      green: '0x50a14f'
      yellow: '0xc18401'
      blue: '0x0184bc'
      magenta: '0xa626a4'
      cyan: '0x0997b3'
      white: '0xfafafa'

    bright:
      black: '0x383a42'
      red: '0xe45649'
      green: '0x50a14f'
      yellow: '0xc18401'
      blue: '0x0184bc'
      magenta: '0xa626a4'
      cyan: '0x0997b3'
      white: '0xfafafa'

  # Colors (One Half Dark)
  onehalfdark: &onehalfdark
    primary:
      background: '0x282c34'
      foreground: '0xdcdfe4'

    normal:
      black: '0x282c34'
      red: '0xe06c75'
      green: '0x98c379'
      yellow: '0xe5c07b'
      blue: '0x61afef'
      magenta: '0xc678dd'
      cyan: '0x56b6c2'
      white: '0xdcdfe4'

    bright:
      black: '0x282c34'
      red: '0xe06c75'
      green: '0x98c379'
      yellow: '0xe5c07b'
      blue: '0x61afef'
      magenta: '0xc678dd'
      cyan: '0x56b6c2'
      white: '0xdcdfe4'

  ayu_dark: &ayu_dark
    primary:
      background: '0x0A0E14'
      foreground: '0xB3B1AD'

    # Normal colors
    normal:
      black:   '0x01060E'
      red:     '0xEA6C73'
      green:   '0x91B362'
      yellow:  '0xF9AF4F'
      blue:    '0x53BDFA'
      magenta: '0xFAE994'
      cyan:    '0x90E1C6'
      white:   '0xC7C7C7'

    # Bright colors
    bright:
      black:   '0x686868'
      red:     '0xF07178'
      green:   '0xC2D94C'
      yellow:  '0xFFB454'
      blue:    '0x59C2FF'
      magenta: '0xFFEE99'
      cyan:    '0x95E6CB'
      white:   '0xFFFFFF'


  ayu_mirage: &ayu_mirage
    primary:
      background: '0x212733'
      foreground: '0xd9d7ce'

    # Normal colors
    normal:
      black:   '0x191e2a'
      red:     '0xed8274'
      green:   '0xa6cc70'
      yellow:  '0xfad07b'
      blue:    '0x6dcbfa'
      magenta: '0xcfbafa'
      cyan:    '0x90e1c6'
      white:   '0xc7c7c7'

    # Bright colors
    bright:
      black:   '0x686868'
      red:     '0xf28779'
      green:   '0xbae67e'
      yellow:  '0xffd580'
      blue:    '0x73d0ff'
      magenta: '0xd4bfff'
      cyan:    '0x95e6cb'
      white:   '0xffffff'

  # Colors (One Dark)
  one_dark: &one_dark
  # Default colors
    primary:
      background: '#282c34'
      foreground: '#abb2bf'

    # Normal colors
    normal:
      # NOTE: Use '#131613' for the `black` color if you'd like to see
      # black text on the background.
      black:   '#282c34'
      red:     '#e06c75'
      green:   '#98c379'
      yellow:  '#d19a66'
      blue:    '#61afef'
      magenta: '#c678dd'
      cyan:    '#56b6c2'
      white:   '#abb2bf'

    # Bright colors
    bright:
      black:   '#5c6370'
      red:     '#e06c75'
      green:   '#98c379'
      yellow:  '#d19a66'
      blue:    '#61afef'
      magenta: '#c678dd'
      cyan:    '#56b6c2'
      white:   '#ffffff'

  # Colors (One Light)
  one_light: &one_light
    # Default colors
    primary:
      foreground: '#282c34'
      background: '#ffffff'

    # Normal colors
    normal:
      # NOTE: Use '#131613' for the `black` color if you'd like to see
      # black text on the background.
      black:   '#282c34'
      red:     '#e06c75'
      green:   '#98c379'
      yellow:  '#d19a66'
      blue:    '#61afef'
      magenta: '#c678dd'
      cyan:    '#56b6c2'
      white:   '#abb2bf'

    # Bright colors
    bright:
      black:   '#5c6370'
      red:     '#e06c75'
      green:   '#98c379'
      yellow:  '#d19a66'
      blue:    '#61afef'
      magenta: '#c678dd'
      cyan:    '#56b6c2'
      white:   '#ffffff'

  nord: &nord
    primary:
      background: '0x2E3440'
      foreground: '0xD8DEE9'
    cursor:
      text: '0x2E3440'
      cursor: '0xD8DEE9'
    normal:
      black: '0x3B4252'
      red: '0xBF616A'
      green: '0xA3BE8C'
      yellow: '0xEBCB8B'
      blue: '0x81A1C1'
      magenta: '0xB48EAD'
      cyan: '0x88C0D0'
      white: '0xE5E9F0'
    bright:
      black: '0x4C566A'
      red: '0xBF616A'
      green: '0xA3BE8C'
      yellow: '0xEBCB8B'
      blue: '0x81A1C1'
      magenta: '0xB48EAD'
      cyan: '0x8FBCBB'
      white: '0xECEFF4'

  purify: &purify
    # Selection colors
    selection:
      text:       '0xFAFAFA'
      background: '0x252834'

    # Normal colors
    primary:
      background: '0x313440'
      foreground: '0xFAFAFA'
    normal:
      black:   '0x282C34'
      red:     '0xFF6059'
      green:   '0x5FFF87'
      yellow:  '0xFFFF87'
      blue:    '0x5FAFFF'
      magenta: '0xAF87FF'
      cyan:    '0x5FAFFF'
      white:   '0xFAFAFA'

    # Bright colors
    bright:
      black:   '0x282C34'
      red:     '0xFF6059'
      green:   '0x5FFF87'
      yellow:  '0xFFFF87'
      blue:    '0x5FAFFF'
      magenta: '0xAF87FF'
      cyan:    '0x5FAFFF'
      white:   '0xFAFAFA'

### Edge (Light variant)
  edge_light:	  &edge_light
    primary:
      background: "0xfafafa"
      foreground: "0x4b505b"

    normal:
      black: "0x4b505b"
      red: "0xd05858"
      green: "0x608e32"
      yellow: "0xbe7e05"
      blue: "0x5079be"
      magenta: "0xb05ccc"
      cyan: "0x3a8b84"
      white: "0xfafafa"

    bright:
      black: "0x4b505b"
      red: "0xd05858"
      green: "0x608e32"
      yellow: "0xbe7e05"
      blue: "0x5079be"
      magenta: "0xb05ccc"
      cyan: "0x3a8b84"
      white: "0xfafafa"

  ### Edge (Dark Default variant)
  edge_dark_def:  &edge_dark_default
    primary:
      background: "0x2c2e34"
      foreground: "0xc5cdd9"

    normal:
      black: "0x3e4249"
      red: "0xec7279"
      green: "0xa0c980"
      yellow: "0xdeb974"
      blue: "0x6cb6eb"
      magenta: "0xd38aea"
      cyan: "0x5dbbc1"
      white: "0xc5cdd9"

    bright:
      black: "0x3e4249"
      red: "0xec7279"
      green: "0xa0c980"
      yellow: "0xdeb974"
      blue: "0x6cb6eb"
      magenta: "0xd38aea"
      cyan: "0x5dbbc1"
      white: "0xc5cdd9"

  ### Edge (Dark Aura variant)
  edge_dark_aura:  &edge_dark_aura
    primary:
      background: "0x2b2d37"
      foreground: "0xc5cdd9"

    normal:
      black: "0x363a49"
      red: "0xec7279"
      green: "0xa0c980"
      yellow: "0xdeb974"
      blue: "0x6cb6eb"
      magenta: "0xd38aea"
      cyan: "0x5dbbc1"
      white: "0xc5cdd9"

    bright:
      black: "0x363a49"
      red: "0xec7279"
      green: "0xa0c980"
      yellow: "0xdeb974"
      blue: "0x6cb6eb"
      magenta: "0xd38aea"
      cyan: "0x5dbbc1"
      white: "0xc5cdd9"

  ### Edge (Dark Neon variant)
  edge_dark_neon:  &edge_dark_neon
    primary:
      background: "0x2b2d3a"
      foreground: "0xc5cdd9"

    normal:
      black: "0x363a4e"
      red: "0xec7279"
      green: "0xa0c980"
      yellow: "0xdeb974"
      blue: "0x6cb6eb"
      magenta: "0xd38aea"
      cyan: "0x5dbbc1"
      white: "0xc5cdd9"

    bright:
      black: "0x363a4e"
      red: "0xec7279"
      green: "0xa0c980"
      yellow: "0xdeb974"
      blue: "0x6cb6eb"
      magenta: "0xd38aea"
      cyan: "0x5dbbc1"
      white: "0xc5cdd9"

### Choose one of the & tags from the schemes listed above
colors: *edge_dark_neon

# Visual Bell
#
# Any time the BEL code is received, Alacritty "rings" the visual bell. Once
# rung, the terminal background will be set to white and transition back to the
# default background color. You can control the rate of this transition by
# setting the `duration` property (represented in milliseconds). You can also
# configure the transition function by setting the `animation` property.
#
# Values for `animation`:
#   - Ease
#   - EaseOut
#   - EaseOutSine
#   - EaseOutQuad
#   - EaseOutCubic
#   - EaseOutQuart
#   - EaseOutQuint
#   - EaseOutExpo
#   - EaseOutCirc
#   - Linear
#
# Specifying a `duration` of `0` will disable the visual bell.
visual_bell:
  animation: EaseOutExpo
  duration: 0
  color: '0xffffff'

# Background opacity
#
# Window opacity as a floating point number from `0.0` to `1.0`.
# The value `0.0` is completely transparent and `1.0` is opaque.
  background_opacity: 0.9

# Mouse bindings
#
# Available fields:
#   - mouse
#   - action
#   - mods (optional)
#
# Values for `mouse`:
#   - Middle
#   - Left
#   - Right
#   - Numeric identifier such as `5`
#
# All available `mods` and `action` values are documented in the key binding
# section.
mouse_bindings:
  - { mouse: Middle, action: PasteSelection }

mouse:
  # Click settings
  #
  # The `double_click` and `triple_click` settings control the time
  # alacritty should wait for accepting multiple clicks as one double
  # or triple click.
  double_click: { threshold: 300 }
  triple_click: { threshold: 300 }

  # If this is `true`, the cursor is temporarily hidden when typing.
  hide_when_typing: false

  url:
    # URL launcher
    #
    # This program is executed when clicking on a text which is recognized as a URL.
    # The URL is always added to the command as the last parameter.
    #
    # When set to `None`, URL launching will be disabled completely.
    #
    # Default:
    #   - (macOS) open
    #   - (Linux) xdg-open
    #   - (Windows) explorer
    #launcher:
    #  program: xdg-open
    #  args: []

    # URL modifiers
    #
    # These are the modifiers that need to be held down for opening URLs when clicking
    # on them. The available modifiers are documented in the key binding section.
    modifiers: None

selection:
  semantic_escape_chars: ",│`|:\"' ()[]{}<>"

  # When set to `true`, selected text will be copied to the primary clipboard.
  save_to_clipboard: false

# Allow terminal applications to change Alacritty's window title.
dynamic_title: true

cursor:
  # Cursor style
  #
  # Values for `style`:
  #   - ▇ Block
  #   - _ Underline
  #   - | Beam
  style: Block

  # If this is `true`, the cursor will be rendered as a hollow box when the
  # window is not focused.
  unfocused_hollow: true

# Live config reload (changes require restart)
live_config_reload: true

# Shell
#
# You can set `shell.program` to the path of your favorite shell, e.g. `/bin/fish`.
# Entries in `shell.args` are passed unmodified as arguments to the shell.
#
# Default:
#   - (macOS) /bin/bash --login
#   - (Linux) user login shell
#   - (Windows) powershell
#shell:
#  program: /bin/bash
#  args:
#    - --login

# Startup directory
#
# Directory the shell is started in. If this is unset, or `None`, the working
# directory of the parent process will be used.
working_directory: None

# Windows 10 ConPTY backend (Windows only)
#
# This will enable better color support and may resolve other issues,
# however this API and its implementation is still young and so is
# disabled by default, as stability may not be as good as the winpty
# backend.
#
# Alacritty will fall back to the WinPTY automatically if the ConPTY
# backend cannot be initialized.
enable_experimental_conpty_backend: false

# Send ESC (\x1b) before characters when alt is pressed.
alt_send_esc: true

debug:
  # Display the time it takes to redraw each frame.
  render_timer: false

  # Keep the log file after quitting Alacritty.
  persistent_logging: false

  # Log level
  #
  # Values for `log_level`:
  #   - None
  #   - Error
  #   - Warn
  #   - Info
  #   - Debug
  #   - Trace
  log_level: Warn

  # Print all received window events.
  print_events: false

  # Record all characters and escape sequences as test data.
  ref_test: false

# Key bindings
#
# Key bindings are specified as a list of objects. Each binding will specify a
# key and modifiers required to trigger it, terminal modes where the binding is
# applicable, and what should be done when the key binding fires. It can either
# send a byte sequence to the running application (`chars`), execute a
# predefined action (`action`) or fork and execute a specified command plus
# arguments (`command`).
#
# Bindings are always filled by default, but will be replaced when a new binding
# with the same triggers is defined. To unset a default binding, it can be
# mapped to the `None` action.
#
# Example:
#   `- { key: V, mods: Control|Shift, action: Paste }`
#
# Available fields:
#   - key
#   - mods (optional)
#   - chars | action | command (exactly one required)
#   - mode (optional)
#
# Values for `key`:
#   - `A` -> `Z`
#   - `F1` -> `F12`
#   - `Key1` -> `Key0`
#
#   A full list with available key codes can be found here:
#   https://docs.rs/glutin/*/glutin/enum.VirtualKeyCode.html#variants
#
#   Instead of using the name of the keys, the `key` field also supports using
#   the scancode of the desired key. Scancodes have to be specified as a
#   decimal number.
#   This command will allow you to display the hex scancodes for certain keys:
#     `showkey --scancodes`
#
# Values for `mods`:
#   - Command
#   - Control
#   - Option
#   - Super
#   - Shift
#   - Alt
#
#   Multiple `mods` can be combined using `|` like this: `mods: Control|Shift`.
#   Whitespace and capitalization is relevant and must match the example.
#
# Values for `chars`:
#   The `chars` field writes the specified string to the terminal. This makes
#   it possible to pass escape sequences.
#   To find escape codes for bindings like `PageUp` ("\x1b[5~"), you can run
#   the command `showkey -a` outside of tmux.
#   Note that applications use terminfo to map escape sequences back to
#   keys. It is therefore required to update the terminfo when
#   changing an escape sequence.
#
# Values for `action`:
#   - Paste
#   - PasteSelection
#   - Copy
#   - IncreaseFontSize
#   - DecreaseFontSize
#   - ResetFontSize
#   - ScrollPageUp
#   - ScrollPageDown
#   - ScrollLineUp
#   - ScrollLineDown
#   - ScrollToTop
#   - ScrollToBottom
#   - ClearHistory
#   - Hide
#   - Quit
#   - ClearLogNotice
#   - SpawnNewInstance
#   - ToggleFullscreen
#   - None
#
# Values for `action` (macOS only):
#   - ToggleSimpleFullscreen: Enters fullscreen without occupying another space
#
# Values for `command`:
#   The `command` field must be a map containing a `program` string and
#   an `args` array of command line parameter strings.
#
#   Example:
#       `command: { program: "alacritty", args: ["-e", "vttest"] }`
#
# Values for `mode`:
#   - ~AppCursor
#   - AppCursor
#   - ~AppKeypad
#   - AppKeypad
key_bindings:
  # (Windows/Linux only)
  #- { key: V,        mods: Control|Shift, action: Paste            }
  #- { key: C,        mods: Control|Shift, action: Copy             }
  #- { key: Insert,   mods: Shift,         action: PasteSelection   }
  #- { key: Key0,     mods: Control,       action: ResetFontSize    }
  #- { key: Equals,   mods: Control,       action: IncreaseFontSize }
  #- { key: Add,      mods: Control,       action: IncreaseFontSize }
  #- { key: Subtract, mods: Control,       action: DecreaseFontSize }
  #- { key: Minus,    mods: Control,       action: DecreaseFontSize }
  #- { key: Return,   mods: Alt,           action: ToggleFullscreen }

  # (macOS only)
  #- { key: N,      mods: Command,         action: SpawnNewInstance }
  - { key: Key0,   mods: Command,         action: ResetFontSize    }
  - { key: Equals, mods: Command,         action: IncreaseFontSize }
  - { key: Add,    mods: Command,         action: IncreaseFontSize }
  - { key: Minus,  mods: Command,         action: DecreaseFontSize }
  #- { key: K,      mods: Command,         action: ClearHistory     }
  #- { key: K,      mods: Command,         chars: "\x0c"            }
  - { key: V,      mods: Command,         action: Paste            }
  - { key: C,      mods: Command,         action: Copy             }
  - { key: H,      mods: Command,         action: Hide             }
  - { key: Q,      mods: Command,         action: Quit             }
  - { key: W,      mods: Command,         action: Quit             }
  - { key: F,      mods: Command|Control, action: ToggleFullscreen }

  - { key: Paste,                   action: Paste                            }
  - { key: Copy,                    action: Copy                             }
  - { key: L,        mods: Control, action: ClearLogNotice                   }
  - { key: L,        mods: Control, chars: "\x0c"                            }
  - { key: Home,     mods: Alt,     chars: "\x1b[1;3H"                       }
  - { key: Home,                    chars: "\x1bOH",        mode: AppCursor  }
  - { key: Home,                    chars: "\x1b[H",        mode: ~AppCursor }
  - { key: End,      mods: Alt,     chars: "\x1b[1;3F"                       }
  - { key: End,                     chars: "\x1bOF",        mode: AppCursor  }
  - { key: End,                     chars: "\x1b[F",        mode: ~AppCursor }
  - { key: PageUp,   mods: Shift,   action: ScrollPageUp,   mode: ~Alt       }
  - { key: PageUp,   mods: Shift,   chars: "\x1b[5;2~",     mode: Alt        }
  - { key: PageUp,   mods: Control, chars: "\x1b[5;5~"                       }
  - { key: PageUp,   mods: Alt,     chars: "\x1b[5;3~"                       }
  - { key: PageUp,                  chars: "\x1b[5~"                         }
  - { key: PageDown, mods: Shift,   action: ScrollPageDown, mode: ~Alt       }
  - { key: PageDown, mods: Shift,   chars: "\x1b[6;2~",     mode: Alt        }
  - { key: PageDown, mods: Control, chars: "\x1b[6;5~"                       }
  - { key: PageDown, mods: Alt,     chars: "\x1b[6;3~"                       }
  - { key: PageDown,                chars: "\x1b[6~"                         }
  - { key: Tab,      mods: Shift,   chars: "\x1b[Z"                          }
  - { key: Back,                    chars: "\x7f"                            }
  - { key: Back,     mods: Alt,     chars: "\x1b\x7f"                        }
  - { key: Insert,                  chars: "\x1b[2~"                         }
  - { key: Delete,                  chars: "\x1b[3~"                         }
  - { key: Left,     mods: Shift,   chars: "\x1b[1;2D"                       }
  - { key: Left,     mods: Control, chars: "\x1b[1;5D"                       }
  - { key: Left,     mods: Alt,     chars: "\x1b[1;3D"                       }
  - { key: Left,                    chars: "\x1b[D",        mode: ~AppCursor }
  - { key: Left,                    chars: "\x1bOD",        mode: AppCursor  }
  - { key: Right,    mods: Shift,   chars: "\x1b[1;2C"                       }
  - { key: Right,    mods: Control, chars: "\x1b[1;5C"                       }
  - { key: Right,    mods: Alt,     chars: "\x1b[1;3C"                       }
  - { key: Right,                   chars: "\x1b[C",        mode: ~AppCursor }
  - { key: Right,                   chars: "\x1bOC",        mode: AppCursor  }
  - { key: Up,       mods: Shift,   chars: "\x1b[1;2A"                       }
  - { key: Up,       mods: Control, chars: "\x1b[1;5A"                       }
  - { key: Up,       mods: Alt,     chars: "\x1b[1;3A"                       }
  - { key: Up,                      chars: "\x1b[A",        mode: ~AppCursor }
  - { key: Up,                      chars: "\x1bOA",        mode: AppCursor  }
  - { key: Down,     mods: Shift,   chars: "\x1b[1;2B"                       }
  - { key: Down,     mods: Control, chars: "\x1b[1;5B"                       }
  - { key: Down,     mods: Alt,     chars: "\x1b[1;3B"                       }
  - { key: Down,                    chars: "\x1b[B",        mode: ~AppCursor }
  - { key: Down,                    chars: "\x1bOB",        mode: AppCursor  }
  - { key: F1,                      chars: "\x1bOP"                          }
  - { key: F2,                      chars: "\x1bOQ"                          }
  - { key: F3,                      chars: "\x1bOR"                          }
  - { key: F4,                      chars: "\x1bOS"                          }
  - { key: F5,                      chars: "\x1b[15~"                        }
  - { key: F6,                      chars: "\x1b[17~"                        }
  - { key: F7,                      chars: "\x1b[18~"                        }
  - { key: F8,                      chars: "\x1b[19~"                        }
  - { key: F9,                      chars: "\x1b[20~"                        }
  - { key: F10,                     chars: "\x1b[21~"                        }
  - { key: F11,                     chars: "\x1b[23~"                        }
  - { key: F12,                     chars: "\x1b[24~"                        }
  - { key: F1,       mods: Shift,   chars: "\x1b[1;2P"                       }
  - { key: F2,       mods: Shift,   chars: "\x1b[1;2Q"                       }
  - { key: F3,       mods: Shift,   chars: "\x1b[1;2R"                       }
  - { key: F4,       mods: Shift,   chars: "\x1b[1;2S"                       }
  - { key: F5,       mods: Shift,   chars: "\x1b[15;2~"                      }
  - { key: F6,       mods: Shift,   chars: "\x1b[17;2~"                      }
  - { key: F7,       mods: Shift,   chars: "\x1b[18;2~"                      }
  - { key: F8,       mods: Shift,   chars: "\x1b[19;2~"                      }
  - { key: F9,       mods: Shift,   chars: "\x1b[20;2~"                      }
  - { key: F10,      mods: Shift,   chars: "\x1b[21;2~"                      }
  - { key: F11,      mods: Shift,   chars: "\x1b[23;2~"                      }
  - { key: F12,      mods: Shift,   chars: "\x1b[24;2~"                      }
  - { key: F1,       mods: Control, chars: "\x1b[1;5P"                       }
  - { key: F2,       mods: Control, chars: "\x1b[1;5Q"                       }
  - { key: F3,       mods: Control, chars: "\x1b[1;5R"                       }
  - { key: F4,       mods: Control, chars: "\x1b[1;5S"                       }
  - { key: F5,       mods: Control, chars: "\x1b[15;5~"                      }
  - { key: F6,       mods: Control, chars: "\x1b[17;5~"                      }
  - { key: F7,       mods: Control, chars: "\x1b[18;5~"                      }
  - { key: F8,       mods: Control, chars: "\x1b[19;5~"                      }
  - { key: F9,       mods: Control, chars: "\x1b[20;5~"                      }
  - { key: F10,      mods: Control, chars: "\x1b[21;5~"                      }
  - { key: F11,      mods: Control, chars: "\x1b[23;5~"                      }
  - { key: F12,      mods: Control, chars: "\x1b[24;5~"                      }
  - { key: F1,       mods: Alt,     chars: "\x1b[1;6P"                       }
  - { key: F2,       mods: Alt,     chars: "\x1b[1;6Q"                       }
  - { key: F3,       mods: Alt,     chars: "\x1b[1;6R"                       }
  - { key: F4,       mods: Alt,     chars: "\x1b[1;6S"                       }
  - { key: F5,       mods: Alt,     chars: "\x1b[15;6~"                      }
  - { key: F6,       mods: Alt,     chars: "\x1b[17;6~"                      }
  - { key: F7,       mods: Alt,     chars: "\x1b[18;6~"                      }
  - { key: F8,       mods: Alt,     chars: "\x1b[19;6~"                      }
  - { key: F9,       mods: Alt,     chars: "\x1b[20;6~"                      }
  - { key: F10,      mods: Alt,     chars: "\x1b[21;6~"                      }
  - { key: F11,      mods: Alt,     chars: "\x1b[23;6~"                      }
  - { key: F12,      mods: Alt,     chars: "\x1b[24;6~"                      }
  - { key: F1,       mods: Super,   chars: "\x1b[1;3P"                       }
  - { key: F2,       mods: Super,   chars: "\x1b[1;3Q"                       }
  - { key: F3,       mods: Super,   chars: "\x1b[1;3R"                       }
  - { key: F4,       mods: Super,   chars: "\x1b[1;3S"                       }
  - { key: F5,       mods: Super,   chars: "\x1b[15;3~"                      }
  - { key: F6,       mods: Super,   chars: "\x1b[17;3~"                      }
  - { key: F7,       mods: Super,   chars: "\x1b[18;3~"                      }
  - { key: F8,       mods: Super,   chars: "\x1b[19;3~"                      }
  - { key: F9,       mods: Super,   chars: "\x1b[20;3~"                      }
  - { key: F10,      mods: Super,   chars: "\x1b[21;3~"                      }
  - { key: F11,      mods: Super,   chars: "\x1b[23;3~"                      }
  - { key: F12,      mods: Super,   chars: "\x1b[24;3~"                      }
  - { key: NumpadEnter,             chars: "\n"         

Activity

kchibisov

kchibisov commented on Apr 25, 2020

@kchibisov
Member

Remove extra spaces before background_opacity setting.

AhmadFudl

AhmadFudl commented on Sep 3, 2021

@AhmadFudl

i have the same problem
and i don't have a missing space

miried

miried commented on Sep 15, 2021

@miried

Same here. macOS 11.1. opacity has no effect, nothing suspicious in the log.

window:
  opacity: 0.1

@kchibisov can you reopen?

snOm3ad

snOm3ad commented on Sep 19, 2021

@snOm3ad

I have the same problem, On macOS 11.4.

Update:
It seems that the switch from background_opacity to window.opacity was merged on August 16th, which is not included in the v0.9 release from August 3rd! So if your installation comes from the releases you still have to use background_opacity in your config file! For more information see #5297.

joeljuca

joeljuca commented on Oct 5, 2021

@joeljuca

@snOm3ad thank you! Using background_opacity solved the issue for me 👍

techsk8

techsk8 commented on Nov 28, 2021

@techsk8

I still have the issue on Xmonad. Running Gnome DE on one of my machines and the same config file on that works with no issues...
Btw I've already checked for spaces.. background_opacity: 1.0 and there are none.

andradefil

andradefil commented on Feb 5, 2022

@andradefil

I have this problem in MacOS 11.6, verified that I'm using the alacritty version 0.8, update for 0.10 solve the problem using the configuration window.opacity

f4iey

f4iey commented on Feb 18, 2022

@f4iey

I have this problem in MacOS 11.6, verified that I'm using the alacritty version 0.8, update for 0.10 solve the problem using the configuration window.opacity

When it says window.opacity, it actually means this:

window:
  opacity: 0.6

In fact, I had to remove background_opacity and place opacity into the window section (it wasn't the case before).
That's what worked for me.

ffarps

ffarps commented on Jun 14, 2022

@ffarps

if you use KDE plasma, thus issue may be caused because compositor on display settings isn't enabled

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          Opacity setting for Alacritty does not work. Alacritty is always opaque. · Issue #3641 · alacritty/alacritty