polybar/CHANGELOG.md

# Changelog

All notable changes to this project will be documented in this file.
Each release should have the following subsections, if entries exist, in the
given order: `Breaking`, `Build`, `Deprecated`, `Removed`, `Added`, `Changed`,
`Fixed`, `Security`.

The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).

## [Unreleased]
### Added
- An option `unmute-on-scroll` for `internal/pulseaudio` and `internal/alsa` to unmute audio when the user scrolls on the widget.
- `internal/battery`: Added `ramp-charging` tag.
([`#3172`](https://github.com/polybar/polybar/pull/3172))
by [@stringlapse](https://github.com/stringlapse).
- Added tray-reversed = false option to tray module. Makes tray icons order reversed. ([`#3181`](https://github.com/polybar/polybar/discussions/3181))

### Changed
- `internal/pulseaudio`: Volume adjustments now preserve balance instead of volume ratios ([`#3123`](https://github.com/polybar/polybar/issues/3123), [`#3169`](https://github.com/polybar/polybar/pull/3169)) by [`@parmort`](https://github.com/parmort)
- When the `-r` flag is provided, and RandR reports zero connected active screens, polybar will not restart. This fixes polybar dying on some laptops when the lid is closed. ([`#3078`](https://github.com/polybar/polybar/pull/3078))).

## [3.7.2] - 2024-08-17
### Fixed
- `custom/script`: When a script with `tail = true` received multiple lines quickly, only the first would get displayed ([`#3117`](https://github.com/polybar/polybar/issues/3117), [`#3119`](https://github.com/polybar/polybar/pull/3119)) by [@Isak05](https://github.com/Isak05)
-  Token min-length calculations would behave differently when non-ASCII characters appear in the token ([`#3074`](https://github.com/polybar/polybar/issues/3074), [`#3087`](https://github.com/polybar/polybar/pull/3087)) by [@nklloyd](https://github.com/nklloyd)
-  i3: Fix duplicated rendering for non-full-width bars ([`#3091`](https://github.com/polybar/polybar/pull/3091), [`#3060`](https://github.com/polybar/polybar/issues/3060))
- `internal/backlight`: Module could display the literal `%percentage%` token if the backlight reports a value of 0 at startup ([`#3081`](https://github.com/polybar/polybar/pull/3081)) by [@unclechu](https://github.com/unclechu)
- `internal/tray`: Fix crash during restarting, when tray icons were not removed proberly ([`#3111`](https://github.com/polybar/polybar/issues/3111), [`#3112`](https://github.com/polybar/polybar/pull/3112))
- `custom/ipc`: Module would display the literal `%output%` token before the initial hook finished executing ([`#3131`](https://github.com/polybar/polybar/issues/3131), [`#3140`](https://github.com/polybar/polybar/pull/3140))
- renderer: Pseudo-transparency rendering artifacts when wallpaper does not fill entire screen ([`#3096`](https://github.com/polybar/polybar/pull/3096), [`#3041`](https://github.com/polybar/polybar/issues/3041))

## [3.7.1] - 2023-11-27
### Build
- Fixed missing header when using `libc++` in clang 15 and below

### Changed
- `internal/tray`: The module must use the `<tray>` tag (this is the default) ([`#3037`](https://github.com/polybar/polybar/pull/3037))

### Fixed
- Modules did not validate that all tags (e.g. `<label>`) used in a format were valid for that format ([`#3043`](https://github.com/polybar/polybar/issues/3043), [`#3045`](https://github.com/polybar/polybar/pull/3045))
- `internal/tray`: Fixed `module-margin` and `separator` being applied to completely empty tray module ([`#3036`](https://github.com/polybar/polybar/issues/3036), [`#3037`](https://github.com/polybar/polybar/pull/3037))

## [3.7.0] - 2023-11-05
### Breaking
- `custom/script`:
  - No longer hides the module if the `exec` command failed and did not change the output from the previous run ([`#2636`](https://github.com/polybar/polybar/issues/2636)). Somewhat similar original behaviour can be imitated with `format-fail`, if necessary.
  - If the `exec` command produced no output and exited with a non-zero exit code the module is no longer completely empty, but just has an empty `%output%` token. If you relied on this behavior to hide the module under certain circumstances, make sure the script exits with an exit code of zero. ([`#2857`](https://github.com/polybar/polybar/discussions/2857), [`#2861`](https://github.com/polybar/polybar/pull/2861))

### Build
- Respect `CMAKE_INSTALL_PREFIX` when installing default config ([`#2770`](https://github.com/polybar/polybar/pull/2770), [`#2917`](https://github.com/polybar/polybar/pull/2917))
- Change default `CMAKE_INSTALL_PREFIX` to `/usr`. Installations with default flags will now go into `/usr` instead of `/usr/local` ([`#2917`](https://github.com/polybar/polybar/pull/2917))
- Bump C++ version to C++17 ([`#2847`](https://github.com/polybar/polybar/pull/2847))

### Deprecated
- `custom/text`: The `content` setting and all its properties are deprecated in favor of `format` with the same functionality. ([`#2676`](https://github.com/polybar/polybar/pull/2676))
- tray: All tray-related settings in the bar section are deprecated. They are replaced by the new tray module ([`#3002`](https://github.com/polybar/polybar/pull/3002))
  - `tray-position`, `tray-detached`, `tray-maxsize`, `tray-scale`, `tray-transparent`, `tray-background`, `tray-foreground`, `tray-padding`, `tray-offset-x`, `tray-offset-y`

### Added
- A tray module with type `internal/tray` for positioning the tray like a module ([`#2689`](https://github.com/polybar/polybar/issues/2689))
- `internal/temperature`: `%temperature-k%` token displays the temperature in Kelvin ([`#2774`](https://github.com/polybar/polybar/discussions/2774), [`#2784`](https://github.com/polybar/polybar/pull/2784))
- `internal/pulseaudio`: `reverse-scroll` option ([`#2664`](https://github.com/polybar/polybar/pull/2664))
- `custom/script`: Repeat interval for script failure (`interval-fail`) and `exec-if` (`interval-if`) ([`#943`](https://github.com/polybar/polybar/issues/943), [`#2606`](https://github.com/polybar/polybar/issues/2606), [`#2630`](https://github.com/polybar/polybar/pull/2630))
- `custom/ipc`:
  - Added support for `<label>` in `format` ([`#2841`](https://github.com/polybar/polybar/pull/2841)) by [@madhavpcm](https://github.com/madhavpcm).
  - Added support for `format-i` for each defined `hook-i` ([`#2775`](https://github.com/polybar/polybar/issues/2775), [`#2810`](https://github.com/polybar/polybar/pull/2810)) by [@madhavpcm](https://github.com/madhavpcm).
- `custom/text`: Loads the `format` setting, which supports the `<label>` tag, if the deprecated `content` is not defined ([`#1331`](https://github.com/polybar/polybar/issues/1331), [`#2673`](https://github.com/polybar/polybar/pull/2673), [`#2676`](https://github.com/polybar/polybar/pull/2676))
- `internal/backlight`:
  - `scroll-interval` option ([`#2696`](https://github.com/polybar/polybar/issues/2696), [`#2700`](https://github.com/polybar/polybar/pull/2700))
  - `poll-interval` setting controls how often the module is updated (in case it does not happen when the brightness changes) ([`#2835`](https://github.com/polybar/polybar/issues/2835), [`#3028`](https://github.com/polybar/polybar/pull/3028))
- `internal/temperature`: Added `zone-type` setting ([`#2572`](https://github.com/polybar/polybar/issues/2572), [`#2752`](https://github.com/polybar/polybar/pull/2752)) by [@xphoniex](https://github.com/xphoniex)
- `internal/xwindow`: `%class%` and `%instance%` tokens, which show the contents of the `WM_CLASS` property of the active window ([`#2830`](https://github.com/polybar/polybar/pull/2830))
- Added `enable-struts` option in bar section to enable/disable struts ([`#2769`](https://github.com/polybar/polybar/issues/2769), [`#2844`](https://github.com/polybar/polybar/pull/2844)) by [@VanillaViking](https://github.com/VanillaViking).
- `wm-restack`:
  - `bottom`: lowers polybar to the bottom of the window stack (same as the previous behavior of `generic`) ([`#2961`](https://github.com/polybar/polybar/pull/2961))
  - `ewmh`: Tries to use the `_NET_SUPPORTING_WM_CHECK` hint to position the bar ([`#2961`](https://github.com/polybar/polybar/pull/2961))
- `internal/xworkspaces`: `group-by-monitor` setting to decide whether `_NET_DESKTOP_VIEWPORT` should be used to group workspaces by monitor; ([`#2603`](https://github.com/polybar/polybar/issues/2603), [`#2926`](https://github.com/polybar/polybar/pull/2926)) by [@slotThe](https://github.com/slotThe/).

### Changed
- `custom/script`:
  - No longer produces a completely empty module if the `exec` command failed. It only produces an empty module if the script had a zero exit code. ([`#2857`](https://github.com/polybar/polybar/discussions/2857), [`#2861`](https://github.com/polybar/polybar/pull/2861))
  - Bumped the script polling interval (not related to the `interval` setting) to decrease wakeups. Polybar may take slightly longer to shut down. [`#2879`](https://github.com/polybar/polybar/pull/2879)
- `internal/fs`: Use `/` as a fallback if no mountpoints are specified ([`#2572`](https://github.com/polybar/polybar/issues/2572), [`#2705`](https://github.com/polybar/polybar/pull/2705))
- `internal/backlight`:
  - Detect backlight if none specified ([`#2572`](https://github.com/polybar/polybar/issues/2572), [`#2728`](https://github.com/polybar/polybar/pull/2728))
  - `use-actual-brightness` now always defaults to `true` (even for `amdgpu` backlights) ([`#2835`](https://github.com/polybar/polybar/issues/2835), [`2839`](https://github.com/polybar/polybar/pull/2839))
- Providing a negative min-width to a token adds right-padding ([`#2789`](https://github.com/polybar/polybar/issues/2789), [`#2801`](https://github.com/polybar/polybar/pull/2801)) by [@VanillaViking](https://github.com/VanillaViking).
- Changed fuzzy match option on i3 and bspwm modules to find longest match instead of the first match ([`#2831`](https://github.com/polybar/polybar/pull/2831), [`#2829`](https://github.com/polybar/polybar/issues/2829)) by [@Ron0Studios](https://github.com/ron0studios/).
- `wm-restack`
  - `generic`: Is now a best effort combination of other restacking strategies. First tries `ewmh` and then the `bottom` strategy ([`#2961`](https://github.com/polybar/polybar/pull/2961))
  - `bspwm`: Will restack above the topmost bspwm root window instead of the root window associated with the monitor polybar is on ([`#3019`](https://github.com/polybar/polybar/pull/3019))

### Fixed
- Waiting for double click interval on modules that don't have a double click action ([`#2663`](https://github.com/polybar/polybar/issues/2663), [`#2695`](https://github.com/polybar/polybar/pull/2695))
- renderer:
  - Small gaps when rendering emojis ([`#2785`](https://github.com/polybar/polybar/issues/2785), [`#2802`](https://github.com/polybar/polybar/pull/2802))
  - Crash when using pseudo-transparency with certain wallpapers ([`#2798`](https://github.com/polybar/polybar/issues/2798), [`#2813`](https://github.com/polybar/polybar/pull/2813))
  - Crash when invalid UTF-8 text is encountered ([`#2091`](https://github.com/polybar/polybar/issues/2091), [`#2958`](https://github.com/polybar/polybar/pull/2958))
- config:
  - Error reporting for deprecated config values ([`#2724`](https://github.com/polybar/polybar/issues/2724))
  - Also monitor include-files for changes when --reload is set ([`#675`](https://github.com/polybar/polybar/issues/675), [`#2759`](https://github.com/polybar/polybar/pull/2759))
- `internal/xwindow`: module does not crash when a tag is not provided in format ([`#2826`](https://github.com/polybar/polybar/issues/2826), [`#2833`](https://github.com/polybar/polybar/pull/2833)) by [@VanillaViking](https://github.com/VanillaViking)
- `internal/i3`: module errors when i3 has negative gaps ([`#2888`](https://github.com/polybar/polybar/issues/2888), [`#2889`](https://github.com/polybar/polybar/pull/2889))
- `internal/backlight`: Fix module being one step behind every update ([`#2835`](https://github.com/polybar/polybar/issues/2835), [`#3028`](https://github.com/polybar/polybar/pull/3028))
- `wm-restack = bspwm`: bar may become unclickable if there are overlapping monitors ([`#2873`](https://github.com/polybar/polybar/issues/2873), [`#2961`](https://github.com/polybar/polybar/pull/2961))

## [3.6.3] - 2022-05-04
### Fixed
- `custom/script`: Output clearing when `exec-if` fails ([`#2674`](https://github.com/polybar/polybar/issues/2674))
- `internal/battery`: `poll-interval` not working ([`#2649`](https://github.com/polybar/polybar/issues/2649), [`#2677`](https://github.com/polybar/polybar/pull/2677))
- ipc: Polybar failing to open IPC channel after another user already ran polybar, if `XDG_RUNTIME_DIR` is not set ([`#2683`](https://github.com/polybar/polybar/issues/2683), [`#2684`](https://github.com/polybar/polybar/pull/2684))
- No overlines/underlines being drawn when using offsets ([`#2685`](https://github.com/polybar/polybar/pull/2685))
- Update struts (`_NET_WM_STRUT_PARTIAL`) when hiding the bar ([`#2702`](https://github.com/polybar/polybar/pull/2702))
- `internal/pulseaudio`: Hanging during startup ([`#2707`](https://github.com/polybar/polybar/issues/2707), [`#2709`](https://github.com/polybar/polybar/pull/2709))
- `internal/xworkspaces`: Updates of `_NET_DESKTOP_VIEWPORT` being ignored ([`#2693`](https://github.com/polybar/polybar/issues/2693), [`#2698`](https://github.com/polybar/polybar/pull/2698))

## [3.6.2] - 2022-04-03
### Fixed
- `format-offset` being ignored ([`#2643`](https://github.com/polybar/polybar/pull/2643))
- Negative struts (`margin-bottom`, `margin-top`) being ignored ([`#2642`](https://github.com/polybar/polybar/issues/2642), [`#2644`](https://github.com/polybar/polybar/pull/2644))
- Positioning in awesomeWM ([`#2651`](https://github.com/polybar/polybar/pull/2651))
- `internal/xworkspaces`: The module sometimes crashed polybar when windows were closed. ([`#2655`](https://github.com/polybar/polybar/pull/2655))
- Mouseover error when only one cursor is defined ([`#2656`](https://github.com/polybar/polybar/pull/2656))
- `custom/script`: Timing inconsistencies ([`#2650`](https://github.com/polybar/polybar/issues/2650), first described at [`#2630`](https://github.com/polybar/polybar/pull/2630))

## [3.6.1] - 2022-03-05
### Build
- Fixed compiler warning in Clang 13 ([`#2613`](https://github.com/polybar/polybar/pull/2613))
- Fixed compiler error in GCC 12 ([`#2616`](https://github.com/polybar/polybar/pull/2616), [`#2614`](https://github.com/polybar/polybar/issues/2614))
- Fixed installation of docs when some are not generated (man, html...) ([`#2612`](https://github.com/polybar/polybar/pull/2612))
- Fix `LDFLAGS` not being respected ([`#2619`](https://github.com/polybar/polybar/pull/2619))

### Fixed
- `tray-offset-x`, `tray-offset-y`, `offset-x`, and `offset-y` were mistakenly capped below at 0 ([`#2620`](https://github.com/polybar/polybar/pull/2620))
- `custom/script`: Polybar shutdown being stalled by hanging script ([`#2621`](https://github.com/polybar/polybar/pull/2621))
- `polybar-msg`: Wrong hint when using deprecated `hook` ([`#2624`](https://github.com/polybar/polybar/pull/2624))

## [3.6.0] - 2022-03-01
### Breaking
- We added the backslash escape character (\\) for configuration values. This means that the literal backslash character now has special meaning in configuration files, therefore if you want to use it in a value as a literal backslash, you need to escape it with the backslash escape character. The parser logs an error if any unescaped backslashes are found in a value. This affects you only if you are using two consecutive backslashes in a config value, which will now be interpreted as a single literal backslash. ([`#2354`](https://github.com/polybar/polybar/issues/2354))
- We rewrote our formatting tag parser. This shouldn't break anything, if you experience any problems, please let us know. The new parser now gives errors for certain invalid tags where the old parser would just silently ignore them. Adding extra text to the end of a valid tag now produces an error. For example, tags like `%{T-a}`, `%{T2abc}`, `%{rfoo}`, and others will now start producing errors. This does not affect you unless you are producing your own invalid formatting tags (for example in a script).
- For security reasons, the named pipe at `/tmp/polybar_mqueue.<PID>` had its permission bits changed from `666` to `600` to prevent sending ipc messages to polybar processes running under a different user.
- Also for security reasons, the `polybar-msg` command will now only send messages to polybar processes running under the same user. See the [IPC documentation](https://polybar.readthedocs.io/user/ipc.html) for what exactly this means.

### Build
- New dependency: [libuv](https://github.com/libuv/libuv). At least version 1.3 is required.
- Bump the minimum cmake version to 3.5
- The `BUILD_IPC_MSG` option has been renamed to `BUILD_POLYBAR_MSG`
- Building the documentation is now enabled by default and not just when `sphinx-build` is found.
- Users can control exactly which targets should be available with the following cmake options (together with their default value):
  - `BUILD_POLYBAR=ON` - Builds the `polybar` executable
  - `BUILD_POLYBAR_MSG=ON` - Builds the `polybar-msg` executable
  - `BUILD_TESTS=OFF` - Builds the test suite
  - `BUILD_DOC=ON` - Builds the documentation
  - `BUILD_DOC_HTML=BUILD_DOC` - Builds the html documentation (depends on `BUILD_DOC`)
  - `BUILD_DOC_MAN=BUILD_DOC` - Builds the manpages (depends on `BUILD_DOC`)
  - `BUILD_CONFIG=ON` - Generates the default config
  - `BUILD_SHELL=ON` - Generates shell completion files
  - `DISABLE_ALL=OFF` - Disables all above targets by default. Individual targets can still be enabled explicitly.
- The documentation can no longer be built by directly configuring the `doc` directory.
- The `POLYBAR_FLAGS` cmake variable can be used to pass extra C++ compiler flags.
- The sample config file has been removed.
- Polybar now ships a default config that is installed to `/etc/polybar/config.ini`, it lives in `doc/config.ini`. It will also be placed in the `examples` directory in the documentation folder. ([`#2405`](https://github.com/polybar/polybar/issues/2405))
- The `userconfig` target has been removed, you can no longer use `make userconfig`. As an alternative, you can copy the default config from `/etc/polybar/config.ini`.
- The `DEBUG_SHADED` cmake variable and its associated functionality has been removed.

### Deprecated
- `[settings]`: `throttle-output` and `throttle-output-for` have been removed. The new event loop already does a similar thing where it coalesces update triggers if they happen directly after one another, leading to only a single bar update.
- When not specifying the config file with `--config`, naming your config file `config` is deprecated. Rename your config file to `config.ini`.
- Directly writing ipc messages to `/tmp/polybar_mqueue.<PID>` is deprecated, users should always use `polybar-msg`. As a consequence the message format used for IPC is deprecated as well.
- `polybar-msg hook` is deprecated in favor of using the hook action. `polybar-msg` will tell you the correct command to use.

### Added
- Support `px` and `pt` units everyhwere where before only a number of spaces or pixels could be specified. ([`#2578`](https://github.com/polybar/polybar/pull/2578), [`#1651`](https://github.com/polybar/polybar/issues/1651), [`#951`](https://github.com/polybar/polybar/issues/951))
- `internal/alsa`: Right and middle click settings. ([`#2566`](https://github.com/polybar/polybar/issues/2566), [`#2573`](https://github.com/polybar/polybar/pull/2573))
- `internal/network`:
  - New token `%mac%` shows MAC address of selected interface ([`#2568`](https://github.com/polybar/polybar/issues/2568), [`#2569`](https://github.com/polybar/polybar/pull/2569))
  - New token `%netspeed%` that provides the total speed of the internet (up + down speed) ([`#2590`](https://github.com/polybar/polybar/pull/2590), [`#1083`](https://github.com/polybar/polybar/issues/1083))
  - `speed-unit = B/s` can be used to customize how network speeds are displayed. ([`#2068`](https://github.com/polybar/polybar/pull/2068))
  - `interface-type` may be used in place of `interface` to automatically select a network interface ([`#2025`](https://github.com/polybar/polybar/pull/2025), [`#339`](https://github.com/polybar/polybar/issues/339))
- Polybar can now read config files from stdin: `polybar -c /dev/stdin`. ([`#2545`](https://github.com/polybar/polybar/pull/2545))
- `custom/script`:
  - Setting environment variables using `env-*` config option. ([`#2090`](https://github.com/polybar/polybar/issues/2090), [`#2512`](https://github.com/polybar/polybar/pull/2512))
  - Add formatting for script failure (`format-fail`, `label-fail`) ([`#2588`](https://github.com/polybar/polybar/issues/2588), [`#2596`](https://github.com/polybar/polybar/pull/2596))
- Support for ramp weights. ([`#1750`](https://github.com/polybar/polybar/issues/1750), [`#2505`](https://github.com/polybar/polybar/pull/2505))
- `internal/memory`: New tokens `%used%`, `%free%`, `%total%`, `%swap_total%`, `%swap_free%`, and `%swap_used%` that automatically switch between MiB and GiB when below or above 1GiB. ([`#2472`](https://github.com/polybar/polybar/issues/2472), [`#2488`](https://github.com/polybar/polybar/pull/2488))
- `internal/i3`: `show-urgent` option to always show urgent windows when `pin-workspace` is active ([`#2374`](https://github.com/polybar/polybar/issues/2374), [`#2378`](https://github.com/polybar/polybar/pull/2378))
- `internal/xworkspaces`:
  - `reverse-scroll` can be used to reverse the scroll direction when cycling through desktops. ([`#2365`](https://github.com/polybar/polybar/pull/2365))
  - `%nwin%` can be used to display the number of open windows per workspace ([`#604`](https://github.com/polybar/polybar/issues/604), [`#2329`](https://github.com/polybar/polybar/pull/2329))
- Initial support for the backslash escape character (\\) in configs. ([`#2354`](https://github.com/polybar/polybar/issues/2354), [`#2361`](https://github.com/polybar/polybar/pull/2361))
- Warn states for the cpu, memory, fs, and battery modules. ([`#570`](https://github.com/polybar/polybar/issues/570), [`#956`](https://github.com/polybar/polybar/issues/956), [`#1871`](https://github.com/polybar/polybar/issues/1871), [`#2141`](https://github.com/polybar/polybar/issues/2141), [`#2199`](https://github.com/polybar/polybar/pull/2199))
  - `internal/battery`: `format-low`, `label-low`, `animation-low`, `low-at = 10`.
  - `internal/cpu`: `format-warn`, `label-warn`, `warn-percentage = 80`
  - `internal/fs`: `format-warn`, `label-warn`, `warn-percentage = 90`
  - `internal/memory`: `format-warn`, `label-warn`, `warn-percentage = 90`
- `radius` now affects the bar border as well ([`#1566`](https://github.com/polybar/polybar/issues/1566), [`#2359`](https://github.com/polybar/polybar/pull/2359))
- Per-corner radius with `radius-{bottom,top}-{left,right}` ([`#2294`](https://github.com/polybar/polybar/issues/2294), [`#2297`](https://github.com/polybar/polybar/pull/2297))
- `internal/xkeyboard`:
  - `%variant%` token to display the keyboard layout variant ([`#316`](https://github.com/polybar/polybar/issues/316), [`#2163`](https://github.com/polybar/polybar/pull/2163))
  - Allow matching of variants in `layout-icon` ([`#2414`](https://github.com/polybar/polybar/issues/2414), [`#2521`](https://github.com/polybar/polybar/pull/2521))
- Config option to hide a certain module (`hidden = false`) ([`#2108`](https://github.com/polybar/polybar/issues/2108), [`#2342`](https://github.com/polybar/polybar/pull/2342))
- Actions to control visibility of modules (`module_toggle`, `module_show`, and `module_hide`) ([`#2108`](https://github.com/polybar/polybar/issues/2108), [`#2426`](https://github.com/polybar/polybar/pull/2426))
- `internal/backlight`: `use-actual-brightness` option to use the `actual_brightness` file to get the brightness ([`#2380`](https://github.com/polybar/polybar/pull/2380))
- `wm-restack = generic` option that lowers polybar to the bottom of the window stack. Fixes the issue where the bar is being drawn on top of fullscreen windows in xmonad. ([`#2205`](https://github.com/polybar/polybar/issues/2205), [`#2404`](https://github.com/polybar/polybar/pull/2404))
- `internal/bspwm`: `occupied-scroll = true` option allows scrolling through occupied desktops only. ([`#2427`](https://github.com/polybar/polybar/issues/2427), [`#2428`](https://github.com/polybar/polybar/pull/2428))
- `custom/ipc`:
  - `send` action to send arbitrary strings to be displayed in the module. ([`#2455`](https://github.com/polybar/polybar/issues/2455), [`#2463`](https://github.com/polybar/polybar/pull/2463))
  - `hook`, `next`, `prev`, `reset` actions to control the module through actions instead of the deprecated hook messages ([`#2464`](https://github.com/polybar/polybar/issues/2464), [`#2528`](https://github.com/polybar/polybar/pull/2528))
- Added `double-click-interval` setting to the bar section to control the time interval in which a double-click is recognized. Defaults to 400 (ms) ([`#1441`](https://github.com/polybar/polybar/issues/1441), [`#2510`](https://github.com/polybar/polybar/pull/2510))
- Added a new `tray-foreground` setting to give hints to tray icons about what color they should be. ([`#2235`](https://github.com/polybar/polybar/issues/2235), [`#2552`](https://github.com/polybar/polybar/pull/2552))
- `polybar-msg`:
  - For module actions, you can now also specify the module name, action name, and optional data as separate arguments. ([`#2539`](https://github.com/polybar/polybar/pull/2539))
  - Added man page: `man 1 polybar-msg` ([`#2539`](https://github.com/polybar/polybar/pull/2539))

### Changed
- Polybar now also reads `config.ini` when searching for config files. ([`#2323`](https://github.com/polybar/polybar/issues/2323), [`#2324`](https://github.com/polybar/polybar/pull/2324))
- Polybar additionally searches in `XDG_CONFIG_DIRS/polybar/config.ini` (or `/etc/xdg/polybar/config.ini` if it is not set) and `/etc/polybar/config.ini` for config files. ([`#2016`](https://github.com/polybar/polybar/issues/2016), [`#2511`](https://github.com/polybar/polybar/pull/2511))
- We rewrote polybar's main event loop. This shouldn't change any behavior for the user, but be on the lookout for X events, click events, or ipc messages not arriving and the bar not shutting down/restarting properly and let us know if you find any issues. ([`#2384`](https://github.com/polybar/polybar/pull/2384))
- Slight changes to the value ranges the different ramp levels are responsible for in the cpu, memory, fs, and battery modules. The first level is used for everything at and below the start of the value range and the last level for everything at and above the end of the value range. The other levels are evenly distributed over the value range as before. The value range is bounded by the new warning thresholds. ([`#2199`](https://github.com/polybar/polybar/pull/2199))
- `custom/script`: `interval` now defaults to 0 if `tail = true` as per the documentation. ([`#2240`](https://github.com/polybar/polybar/pull/2240))
- `internal/network`: Increased precision for upload and download speeds: 0 decimal places for KB/s (as before), 1 for MB/s and 2 for GB/s. ([`#2054`](https://github.com/polybar/polybar/pull/2054))
- Clicks arriving in close succession, no longer get dropped. Before polybar would drop any click that arrived within 5ms of the previous one. ([`#2510`](https://github.com/polybar/polybar/pull/2510))
- Increased the double click interval from 150ms to 400ms. ([`#2510`](https://github.com/polybar/polybar/pull/2510))
- Stop ignoring actions if they arrive while the previous one hasn't been processed yet. ([`#2469`](https://github.com/polybar/polybar/issues/2469), [`#2517`](https://github.com/polybar/polybar/pull/2517))
- Polybar can now be run without passing the bar name as argument given that the configuration file only defines one bar ([`#2525`](https://github.com/polybar/polybar/issues/2525), [`#2526`](https://github.com/polybar/polybar/pull/2526))
- `include-directory` and `include-file` now support relative paths. The paths are relative to the folder of the file where those directives appear. ([`#2523`](https://github.com/polybar/polybar/issues/2523), [`#2535`](https://github.com/polybar/polybar/issues/2535))
- `custom/ipc`: Empty output strings are no longer formatted. This prevents extraneous spaces and separators from appearing in the bar when the output of an ipc module is empty. ([`#2549`](https://github.com/polybar/polybar/pull/2549))

### Fixed
- Broken positioning in Openbox when the bar is hidden and shown again ([`#2021`](https://github.com/polybar/polybar/issues/2021), [`#2600`](https://github.com/polybar/polybar/pull/2600))
- Handling of action blocks that contain negative offsets ([`#1814`](https://github.com/polybar/polybar/issues/1814), [`#2601`](https://github.com/polybar/polybar/pull/2601))
- `polybar -m` used to show both physical outputs and RandR monitors, even if the outputs were covered by monitors. ([`#2481`](https://github.com/polybar/polybar/issues/2481), [`#2485`](https://github.com/polybar/polybar/pull/2485))
- Parser error if click command contained `}` ([`#2040`](https://github.com/polybar/polybar/issues/2040), [`#2303`](https://github.com/polybar/polybar/pull/2303))
- Some modules stop updating when system time moves backwards. ([`#857`](https://github.com/polybar/polybar/issues/857), [`#1932`](https://github.com/polybar/polybar/issues/1932), [`#2559`](https://github.com/polybar/polybar/pull/2559))
- `custom/script`: Concurrency issues with fast-updating tailed scripts. ([`#1978`](https://github.com/polybar/polybar/issues/1978), [`#2518`](https://github.com/polybar/polybar/pull/2518))
- `internal/alsa`: Slight imprecision when calculating percentages. This caused the volume reported to be off by one. ([`#2399`](https://github.com/polybar/polybar/issues/2399), [`#2401`](https://github.com/polybar/polybar/pull/2401))
- `internal/backlight`: With amdgpu backlights, the brightness indicator was slightly behind. ([`#2367`](https://github.com/polybar/polybar/issues/2367), [`#2380`](https://github.com/polybar/polybar/pull/2380))
- `internal/bspwm`: Warning message regarding T@ ([`#2371`](https://github.com/polybar/polybar/issues/2371), [`#2439`](https://github.com/polybar/polybar/pull/2439))
- `internal/xkeyboard`: Trailing space after the layout label when indicators are empty and made sure right amount of spacing is added between the indicator labels ([`#2292`](https://github.com/polybar/polybar/issues/2292), [`#2306`](https://github.com/polybar/polybar/pull/2306))
- `internal/xworkspaces`:
  - Broken scroll-wrapping and order of workspaces when scrolling ([`#2491`](https://github.com/polybar/polybar/issues/2491), [`#2492`](https://github.com/polybar/polybar/pull/2492))
  - Module would error if WM was not full started up. ([`#1915`](https://github.com/polybar/polybar/issues/1915), [`#2429`](https://github.com/polybar/polybar/pull/2429))
  - Make the urgent hint persistent ([`#1081`](https://github.com/polybar/polybar/issues/1081), [`#2340`](https://github.com/polybar/polybar/pull/2340))
  - Crash when the WM sets -1 for `_NET_WM_DESKTOP` ([`#2352`](https://github.com/polybar/polybar/issues/2352), [`#2353`](https://github.com/polybar/polybar/issues/2353))
- `internal/network`: The module now properly supports 'altnames' for interfaces. ([`#2540`](https://github.com/polybar/polybar/pull/2540))
- `internal/battery`: More accurate battery state ([`#2563`](https://github.com/polybar/polybar/issues/2563), [`#2556`](https://github.com/polybar/polybar/pull/2556))
- Offset tag does not respect current background color ([`#2578`](https://github.com/polybar/polybar/pull/2578), [`#1700`](https://github.com/polybar/polybar/issues/1700))
- Crash when negative margin or padding was specified ([`#2578`](https://github.com/polybar/polybar/pull/2578), [`#1265`](https://github.com/polybar/polybar/issues/1265))

## [3.5.7] - 2021-09-21
### Fixed
- The tray mistakenly removed tray icons that did not support XEMBED
  ([`#2479`](https://github.com/polybar/polybar/issues/2479),
  [`#2442`](https://github.com/polybar/polybar/issues/2442))
- `custom/ipc`: Only the first appearance of the `%pid%` token was replaced
  ([`#2500`](https://github.com/polybar/polybar/issues/2500))

## [3.5.6] - 2021-05-24
### Build
- Support building documentation on sphinx 4.0 ([`#2424`](https://github.com/polybar/polybar/issues/2424))
### Fixed
- Tray icons sometimes appears outside of bar ([`#2430`](https://github.com/polybar/polybar/issues/2430), [`#1679`](https://github.com/polybar/polybar/issues/1679))
- Crash in the i3 module ([`#2416`](https://github.com/polybar/polybar/issues/2416))

## [3.5.5] - 2021-03-01
### Build
- Support older python sphinx versions again ([`#2356`](https://github.com/polybar/polybar/issues/2356))

## [3.5.4] - 2021-01-07
### Fixed
- Wrong text displayed if module text ends with `}` ([`#2331`](https://github.com/polybar/polybar/issues/2331))

## [3.5.3] - 2020-12-23
### Build
- Don't use `git` when building documentation ([`#2309`](https://github.com/polybar/polybar/issues/2309))
### Fixed
- Empty color values are no longer treated as invalid and no longer produce an error.

[Unreleased]: https://github.com/polybar/polybar/compare/3.7.2...HEAD
[3.7.2]: https://github.com/polybar/polybar/releases/tag/3.7.2
[3.7.1]: https://github.com/polybar/polybar/releases/tag/3.7.1
[3.7.0]: https://github.com/polybar/polybar/releases/tag/3.7.0
[3.6.3]: https://github.com/polybar/polybar/releases/tag/3.6.3
[3.6.2]: https://github.com/polybar/polybar/releases/tag/3.6.2
[3.6.1]: https://github.com/polybar/polybar/releases/tag/3.6.1
[3.6.0]: https://github.com/polybar/polybar/releases/tag/3.6.0
[3.5.7]: https://github.com/polybar/polybar/releases/tag/3.5.7
[3.5.6]: https://github.com/polybar/polybar/releases/tag/3.5.6
[3.5.5]: https://github.com/polybar/polybar/releases/tag/3.5.5
[3.5.4]: https://github.com/polybar/polybar/releases/tag/3.5.4
[3.5.3]: https://github.com/polybar/polybar/releases/tag/3.5.3