<!-- SPDX-License-Identifier: CC0-1.0 -->

# Changelog

All notable changes to _Shescape_ will be documented in this file.

The format is based on [Keep a Changelog], and this project adheres to [Semantic
Versioning].

## Unreleased

- _No changes yet_

## 3.0.0 (2026-06-13)

- BREAKING CHANGE: Drop support for `which` versions `^3`, `^4`, `^5`, and
  `^6`. ([#2572])
- BREAKING CHANGE: Drop support for Node.js `^14.18.0`, `^16.13.0`, `18.0.0`
  through `22.22.2`, `24.0.0` through `24.14.0`, and `^25`. ([#2572])
- BREAKING CHANGE: Limit CommonJS support to loading ESModules using
  `require()`. ([#2572])
- BREAKING CHANGE: Remove `Shescape` export from the testing module. ([#2572])
- Add support for `which` v7. ([#2534])

## 2.1.12 (2026-05-06)

- Add support for Node.js v26. ([#2520])
- Make `--enable-experimental-regexp-engine` support opt-in. ([#2475])
- Expand support for `--enable-experimental-regexp-engine`. ([#2472], [#2490])

## 2.1.11 (2026-04-07)

- Correct identifying inherited `shell` before Node.js v22.0.0. ([#2447])
- Correct prefix escaping when flag protection is on. ([#2458])
- Correct flag protection on Windows when prefix mixes `-` and `/`. ([#2458])
- Expand support for `--enable-experimental-regexp-engine`. ([#2436])

## 2.1.10 (2026-03-10)

- Correct escaping of `[` and `]` for Bash, BusyBox, and Dash. ([#2410])

## 2.1.9 (2026-03-06)

- Resolve links recursively. ([#2388])
- Add support for `bsd-csh` as a C shell (`csh`) identifier. ([#2388])
- Improve rejecting non-array inputs to `-All` APIs. ([#2363], [#2382])
- Improve documentation. ([#2377], [#2387])
- Expand support for `--enable-experimental-regexp-engine`. ([#2358], [#2383])

## 2.1.8 (2026-01-25)

- Add support for Node.js v25. ([#2342])
- Add support for `--enable-experimental-regexp-engine`. ([#2129], [#2304],
  [#2325])

## 2.1.7 (2025-11-22)

- Add support for `which` v6. ([#2238])

## 2.1.6 (2025-07-14)

- Add support for `which` v4 and v5. ([#2076])

## 2.1.5 (2025-06-19)

- Add support for BusyBox. ([#2018])

## 2.1.4 (2025-06-01)

- Fix incorrect escaping of whitespace when quoting for CMD. ([#1993])

## 2.1.3 (2025-05-11)

- Add support for Node.js v24. ([#1968])

## 2.1.2 (2025-03-25)

- Correct escaping of `%` for CMD. ([#1916])

## 2.1.1 (2024-05-01)

- Add support for Node.js v22. ([#1536])
- Add a `Shescape` stub with failing methods to the testing module. ([#1530])

## 2.1.0 (2023-12-23)

- Add `shescape/stateless` module with v1-like API. ([#1130])
- Re-export `Shescape` as `Stubscape` from `shescape/testing`. ([#1308])

## 2.0.2 (2023-11-19)

- Harden against polluted prototypes. ([#1280], [#1285])

## 2.0.1 (2023-10-28)

- Improve alignment between `Shescape` and `testing/Shescape`. ([#1149])
- Add a failing `Shescape` stub to the testing module. ([#1149])

## 2.0.0 (2023-09-07)

- BREAKING CHANGE: Change main API from an object to a class. ([#963])
- BREAKING CHANGE: Drop support for Node.js `^10.13.0`, `^12`, `14.0.0` through
  `14.18.0`, and `16.0.0` through `16.13.0`. ([#963])
- BREAKING CHANGE: Drop the `interpolation` option. ([#963])
- BREAKING CHANGE: Enable the `flagProtection` option by default. ([#963])
- BREAKING CHANGE: Reject non-array inputs to `escapeAll` & `quoteAll`. ([#963])
- BREAKING CHANGE: Reject unresolved shells. ([#963])
- BREAKING CHANGE: Reject unsupported shells. ([#963])
- Bump dependency `which` from v2 to v3. ([#963])
- Don't resolve default shell when `shell` option is falsy. ([#963])

## 1.7.4 (2023-08-21)

- Fix silent executable lookup failure for Windows. ([#1142])
- Support more valid `shell` values for Windows. ([#1137])

## 1.7.3 (2023-08-07)

- Change escaping of carriage return characters for CMD and Csh. ([#1094])
- Fix TypeScript type declarations for `"shescape/testing"`. ([#1083])
- Fix TypeScript type exports for CommonJS use. ([#1082])

## 1.7.2 (2023-07-07)

- Fix incorrect escaping of `"` when escaping for CMD. ([#1022])
- Fix incorrect escaping of `"` when escaping for PowerShell. ([#1023])
- Fix incorrect escaping of `"` when quoting for PowerShell. ([#1023])
- Fix incorrect escaping of `%` when quoting for CMD. ([#986], [#998])

## 1.7.1 (2023-06-21)

- Add `%` escaping for CMD. ([#982])
- Correct documented behavior of quoting functions. ([#969])
- Expand injection strings to cover environment variables. ([#982])
- Fix incorrect escaping of `$` and backticks for PowerShell. ([#984])
- Improve quoting functionality for PowerShell. ([#983])

## 1.7.0 (2023-06-12)

- Add flag protection option. ([#908])
- Add `@since` information to API options. ([#909])
- Add `options` to the API documentation. ([#936])

## 1.6.7 (2023-05-29)

- Provide injection strings for testing purposes. ([#902])
- Update the package homepage. ([#827])

## 1.6.6 (2023-04-20)

- Add support for Node.js v20. ([#823])
- Provide testing utilities. ([#710])
- Update type exports to be compatible with the TypeScript compiler option
  `"moduleResolution": "bundler"`. ([#761])

## 1.6.5 (2023-01-26)

- Add support for Node.js v19. ([#682])

## 1.6.4 (2023-01-22)

- Fix incorrect quoting of arguments with trailing `\!` for C shell. ([#675])

## 1.6.3 (2023-01-21)

- Add support for C shell. ([#659])
- Update documentation for readability. ([#630], [#652], [#666])

## 1.6.2 (2023-01-03)

- Add in-code example usage for each API function. ([#610])
- Add whitespace preservation for Bash, Dash, and Zsh. ([#584])
- Add whitespace preservation for PowerShell. ([#614])
- Improve TypeScript type definitions. ([#567])
- Improve JSDoc support for IDEs. ([#568])
- Update API documentation. ([#612])

## 1.6.1 (2022-10-25)

- Fix polynomial backtracking in regular expression for Bash escaping with
  `{interpolation:true}`. ([552e8ea])

## 1.6.0 (2022-10-15)

- Escape control characters `U+0008`, `U+000D`, `U+001B`, and `U+009B`. ([#456])
- Improve escaping performance when interpolation is set to `true`. ([#457])
- Improve newline substitution on Windows. ([#458], [#460])
- Improve specificity of supported Node.js versions. ([#432], [#459])
- Remove all side effects on import. ([#408])

## 1.5.10 (2022-08-21)

- Fix polynomial backtracking in regular expression for Bash escaping with
  `{interpolation:true}`. ([#373])
- Fix quadratic runtime of regular expressions for Bash escaping with
  `{interpolation:true}`. ([#373])

## 1.5.9 (2022-07-28)

- Fix escaping characters after a `U+0085` with `{interpolation:true}` for
  PowerShell on Windows systems. ([#354])
- Improve performance of escaping for Dash. ([#336])
- Include full documentation in published package. ([#350])

## 1.5.8 (2022-07-15)

- Fix escaping of line feed characters for Bash, Dash, and Zsh. ([#332])
- Fix escaping of line feed and carriage return characters for PowerShell and
  CMD. ([#332])
- Fix escaping of `~` and `{` for Bash with input strings containing line
  terminating characters. ([#332])

## 1.5.7 (2022-07-06)

- Fix escaping of characters after whitespace with `{interpolation:true}` for
  Bash, Dash, and Zsh. ([#324])
- Fix escaping of characters after whitespace with `{interpolation:true}` for
  PowerShell. ([#322])

## 1.5.6 (2022-07-02)

- Fix unnecessary escaping of quotes with the `child_process` functions `fork`,
  `spawn`, and `execFile`. ([#310])
- Improve performance of escaping for Dash. ([#272])

## 1.5.5 (2022-06-05)

- Fix `The "path" argument must be of type string` error. ([#277])

## 1.5.4 (2022-03-07)

- Fix `Cannot find module 'path/win32'` error on Node.js <16.0.0. ([#199])
- Improve detection of the Windows operating system. ([#192])

## 1.5.3 (2022-03-06)

- Fix documented type of `interpolation` option. ([#190])

## 1.5.2 (2022-02-23)

- Add escaping of brace expansion for non-Zsh shells when interpolation is
  enabled. ([#178])

## 1.5.1 (2022-02-20)

- Fix default shell for Windows when `%COMSPEC%` is missing.
- Fix escaping of `~` for certain input strings with `escape` and `escapeAll`
  with `{interpolation:true}`.
- Improve error messaging for certain non-string arguments.

## 1.5.0 (2022-02-14)

- Follow symbolic links when determining the shell to escape for.

## 1.4.0 (2022-02-08)

- Add escaping for Unix interpolation characters to `escape`/`escapeAll`.
- Add escaping for Zsh wildcard characters to `escape`/`escapeAll`.
- Update TypeScript type definitions.
- Update type information in the documentation.

## 1.3.3 (2022-01-15)

- Add support for Dash (_Debian Almquist shell_).
- Include offline documentation in package installation.

## 1.3.2 (2022-01-05)

- Fix escaping Unicode double quotes (U+201C, U+201D, U+201E) for PowerShell.
- Update documentation to include supported shells.

## 1.3.1 (2021-12-06)

- Add default shell detection.

## 1.3.0 (2021-12-05)

- Add support to configure the shell to escape for.
- Fix escaping backticks for PowerShell.
- Fix escaping `$` for PowerShell.

## 1.2.1 (2021-04-24)

- Provide TypeScript type definitions.
- Update documentation to use ECMAScript module in examples.

## 1.2.0 (2021-04-14)

- Provide native ECMAScript module source files.

## 1.1.3 (2021-03-13)

- Strip null characters (`U+0000`) from arguments.

## 1.1.2 (2021-01-07)

- Add in-source JSDoc documentation.

## 1.1.1 (2020-12-30)

- Improve error message when a value is not stringable.

## 1.1.0 (2020-12-22)

- Add `escapeAll` function to escape an array of arguments.
- Recommend usage of `escapeAll` when using `fork`/`spawn`/`execFile`.

## 1.0.0 (2020-12-10)

- BREAKING CHANGE: Remove ability to call `shescape()` directly.
- BREAKING CHANGE: Automatically convert input to array in `quoteAll()`.

## 0.4.1 (2020-12-09)

- Support non-string values as arguments.

## 0.4.0 (2020-12-08)

- Add `quoteAll` function to quote and escape an array of arguments.
- Create website with full documentation. _(REVERTED)_

## 0.3.1 (2020-12-07)

- Deprecate calling `shescape()` directly.

## 0.3.0 (2020-12-07)

- Add `escape` function to escape an argument (same as `shescape()`).
- Add `quote` function to quote and escape an argument.

## 0.2.1 (2020-11-07)

- Fix missing released files.

## 0.2.0 (2020-11-07)

- Add escaping of double quotes on Windows.

## 0.1.0 (2020-11-06)

- Escape individual shell arguments.

[#178]: https://github.com/ericcornelissen/shescape/pull/178
[#190]: https://github.com/ericcornelissen/shescape/pull/190
[#192]: https://github.com/ericcornelissen/shescape/pull/192
[#199]: https://github.com/ericcornelissen/shescape/pull/199
[#272]: https://github.com/ericcornelissen/shescape/pull/272
[#277]: https://github.com/ericcornelissen/shescape/pull/277
[#310]: https://github.com/ericcornelissen/shescape/pull/310
[#322]: https://github.com/ericcornelissen/shescape/pull/322
[#324]: https://github.com/ericcornelissen/shescape/pull/324
[#332]: https://github.com/ericcornelissen/shescape/pull/332
[#336]: https://github.com/ericcornelissen/shescape/pull/336
[#350]: https://github.com/ericcornelissen/shescape/pull/350
[#354]: https://github.com/ericcornelissen/shescape/pull/354
[#373]: https://github.com/ericcornelissen/shescape/pull/373
[#408]: https://github.com/ericcornelissen/shescape/pull/408
[#432]: https://github.com/ericcornelissen/shescape/pull/432
[#456]: https://github.com/ericcornelissen/shescape/pull/456
[#457]: https://github.com/ericcornelissen/shescape/pull/457
[#458]: https://github.com/ericcornelissen/shescape/pull/458
[#459]: https://github.com/ericcornelissen/shescape/pull/459
[#460]: https://github.com/ericcornelissen/shescape/pull/460
[#567]: https://github.com/ericcornelissen/shescape/pull/567
[#568]: https://github.com/ericcornelissen/shescape/pull/568
[#584]: https://github.com/ericcornelissen/shescape/pull/584
[#610]: https://github.com/ericcornelissen/shescape/pull/610
[#612]: https://github.com/ericcornelissen/shescape/pull/612
[#614]: https://github.com/ericcornelissen/shescape/pull/614
[#630]: https://github.com/ericcornelissen/shescape/pull/630
[#652]: https://github.com/ericcornelissen/shescape/pull/652
[#659]: https://github.com/ericcornelissen/shescape/pull/659
[#666]: https://github.com/ericcornelissen/shescape/pull/666
[#675]: https://github.com/ericcornelissen/shescape/pull/675
[#682]: https://github.com/ericcornelissen/shescape/pull/682
[#710]: https://github.com/ericcornelissen/shescape/pull/710
[#761]: https://github.com/ericcornelissen/shescape/pull/761
[#823]: https://github.com/ericcornelissen/shescape/pull/823
[#827]: https://github.com/ericcornelissen/shescape/pull/827
[#902]: https://github.com/ericcornelissen/shescape/pull/902
[#908]: https://github.com/ericcornelissen/shescape/pull/908
[#909]: https://github.com/ericcornelissen/shescape/pull/909
[#936]: https://github.com/ericcornelissen/shescape/pull/936
[#963]: https://github.com/ericcornelissen/shescape/pull/963
[#969]: https://github.com/ericcornelissen/shescape/pull/969
[#982]: https://github.com/ericcornelissen/shescape/pull/982
[#983]: https://github.com/ericcornelissen/shescape/pull/983
[#984]: https://github.com/ericcornelissen/shescape/pull/984
[#986]: https://github.com/ericcornelissen/shescape/pull/986
[#998]: https://github.com/ericcornelissen/shescape/pull/998
[#1022]: https://github.com/ericcornelissen/shescape/pull/1022
[#1023]: https://github.com/ericcornelissen/shescape/pull/1023
[#1082]: https://github.com/ericcornelissen/shescape/pull/1082
[#1083]: https://github.com/ericcornelissen/shescape/pull/1083
[#1094]: https://github.com/ericcornelissen/shescape/pull/1094
[#1130]: https://github.com/ericcornelissen/shescape/pull/1130
[#1137]: https://github.com/ericcornelissen/shescape/pull/1137
[#1142]: https://github.com/ericcornelissen/shescape/pull/1142
[#1149]: https://github.com/ericcornelissen/shescape/pull/1149
[#1280]: https://github.com/ericcornelissen/shescape/pull/1280
[#1285]: https://github.com/ericcornelissen/shescape/pull/1285
[#1308]: https://github.com/ericcornelissen/shescape/pull/1308
[#1530]: https://github.com/ericcornelissen/shescape/pull/1530
[#1536]: https://github.com/ericcornelissen/shescape/pull/1536
[#1916]: https://github.com/ericcornelissen/shescape/pull/1916
[#1968]: https://github.com/ericcornelissen/shescape/pull/1968
[#1993]: https://github.com/ericcornelissen/shescape/pull/1993
[#2018]: https://github.com/ericcornelissen/shescape/pull/2018
[#2076]: https://github.com/ericcornelissen/shescape/pull/2076
[#2129]: https://github.com/ericcornelissen/shescape/pull/2129
[#2238]: https://github.com/ericcornelissen/shescape/pull/2238
[#2304]: https://github.com/ericcornelissen/shescape/pull/2304
[#2325]: https://github.com/ericcornelissen/shescape/pull/2325
[#2342]: https://github.com/ericcornelissen/shescape/pull/2342
[#2358]: https://github.com/ericcornelissen/shescape/pull/2358
[#2363]: https://github.com/ericcornelissen/shescape/pull/2363
[#2377]: https://github.com/ericcornelissen/shescape/pull/2377
[#2382]: https://github.com/ericcornelissen/shescape/pull/2382
[#2383]: https://github.com/ericcornelissen/shescape/pull/2383
[#2387]: https://github.com/ericcornelissen/shescape/pull/2387
[#2388]: https://github.com/ericcornelissen/shescape/pull/2388
[#2410]: https://github.com/ericcornelissen/shescape/pull/2410
[#2436]: https://github.com/ericcornelissen/shescape/pull/2436
[#2447]: https://github.com/ericcornelissen/shescape/pull/2447
[#2458]: https://github.com/ericcornelissen/shescape/pull/2458
[#2472]: https://github.com/ericcornelissen/shescape/pull/2472
[#2475]: https://github.com/ericcornelissen/shescape/pull/2475
[#2490]: https://github.com/ericcornelissen/shescape/pull/2490
[#2520]: https://github.com/ericcornelissen/shescape/pull/2520
[#2534]: https://github.com/ericcornelissen/shescape/pull/2534
[#2572]: https://github.com/ericcornelissen/shescape/pull/2572
[552e8ea]: https://github.com/ericcornelissen/shescape/commit/552e8eab56861720b1d4e5474fb65741643358f9
[keep a changelog]: https://keepachangelog.com/en/1.0.0/
[semantic versioning]: https://semver.org/spec/v2.0.0.html