# 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]
### 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 value,
  which will now be interpreted as a single literal backslash.
  [`#2354`](https://github.com/polybar/polybar/issues/2354)
- We rewrote our 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 formatting tags
  (for example in a script) and you are using one of these invalid tags.

### 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 sample config file is now placed in the `generated-sources` folder inside
  whatever folder you invoked `cmake` from instead of in the root folder of the
  repository.
- 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`.

### 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`.

### Removed
- `DEBUG_SHADED` cmake variable and its associated functionality.

### Added
- `custom/script`: Implement `env-*` config option.
   ([2090](https://github.com/polybar/polybar/issues/2090))
- `drawtypes/ramp`: Add support for ramp weights.
   ([1750](https://github.com/polybar/polybar/issues/1750))
- `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))
- Option to always show urgent windows in i3 module when `pin-workspace` is active
  ([`2374`](https://github.com/polybar/polybar/issues/2374))
- `internal/xworkspaces`: `reverse-scroll` can be used to reverse the scroll
  direction when cycling through desktops.
- The backslash escape character (\\).
  [`#2354`](https://github.com/polybar/polybar/issues/2354)
- 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))
  - `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))
- Per-corner corner radius with `radius-{bottom,top}-{left,right}`
  ([`#2294`](https://github.com/polybar/polybar/issues/2294))
- `internal/network`: `speed-unit = B/s` can be used to customize how network
  speeds are displayed.
- `internal/xkeyboard`: `%variant%` can be used to parse the layout variant
  ([`#316`](https://github.com/polybar/polybar/issues/316))
- Config option to hide a certain module
  (`hidden = false`)
  ([`#2108`](https://github.com/polybar/polybar/issues/2108))
- Actions to control visibility of modules
  (`module_toggle`, `module_show`, and `module_hide`)
  ([`#2108`](https://github.com/polybar/polybar/issues/2108))
- `internal/xworkspaces`: Make the urgent hint persistent
  ([`#1081`](https://github.com/polybar/polybar/issues/1081))
- `internal/network`: `interface-type` may be used in place of `interface` to
  automatically select a network interface
  ([`#2025`](https://github.com/polybar/polybar/pull/2025))
- `internal/xworkspaces`: `%nwin%` can be used to display the number of open
  windows per workspace
  ([`#604`](https://github.com/polybar/polybar/issues/604))
- `internal/backlight`: added `use-actual-brightness` option
- Added `wm-restack = generic` option that lowers polybar to the bottom of the 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))
- Added `occupied-scroll = true` option to bspwm module.
  Allows scrolling only through occupied desktops only.
  ([`#2427`](https://github.com/polybar/polybar/issues/2427))
- `custom/ipc`: `send` action to send arbitrary strings to be displayed in the module.
  ([`#2455`](https://github.com/polybar/polybar/issues/2455))
- 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))
- `internal/xkeyboard`: Allow configuring icons using variant
  ([`#2414`](https://github.com/polybar/polybar/issues/2414))

### Changed
- Polybar now also reads `config.ini` when searching for config files.
  ([`#2323`](https://github.com/polybar/polybar/issues/2323))
- Polybar additionally searches in `XDG_CONFIG_DIRS/polybar` (or
  `/etc/xdg/polybar` if it is not set) and `/etc/polybar` for config files
  (only `config.ini`).
  ([`#2016`](https://github.com/polybar/polybar/issues/2016))
- 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.
- Slight changes to the value ranges the different ramp levels are responsible
  for in the cpu, memory, fs, and battery modules. The first and last level are
  only used for everything at or below and at and above the edges of the value
  range, respectively. The other levels are evenly distributed over the value
  range as before.
- `custom/script`: `interval` now defaults to 0 if `tail = true` as per the
  documentation.
- `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.
- Clicks arriving in close succession, no longer get dropped. Before polybar
  would drop any click that arrived within 5ms of the previous one.
- Increased the double click interval from 150ms to 400ms.
- Stop ignoring actions if they arrive while the previous one hasn't been processed yet.
  ([`#2469`](https://github.com/polybar/polybar/issues/2469))
- 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))

### Fixed
- `custom/script`: Concurrency issues with fast-updating tailed scripts.
  ([`#1978`](https://github.com/polybar/polybar/issues/1978))
- Trailing space after the layout label when indicators are empty and made sure right amount
  of spacing is added between the indicator labels, in the xkeyboard module.
  ([`#2292`](https://github.com/polybar/polybar/issues/2292))
- Parser error if click command contained `}`
  ([`#2040`](https://github.com/polybar/polybar/issues/2040))
- Slight imprecision when calculating percentages. This caused the volume
  reported by alsa to be off by one.
  ([`#2399`](https://github.com/polybar/polybar/issues/2399))
- `internal/backlight`: With amdgpu backlights, the brightness indicator was slightly behind.
  ([`#2367`](https://github.com/polybar/polybar/issues/2367))
- Warning message regarding T@ in bspwm module
  ([`#2371`](https://github.com/polybar/polybar/issues/2371))
- `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))
- `internal/xworkspaces`: Broken scroll-wrapping and order of workspaces when scrolling
  ([`#2491`](https://github.com/polybar/polybar/issues/2491))

## [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/3.5.7...HEAD
[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