# LispPad Go

[LispPad Go](https://apps.apple.com/us/app/lisppad-go/id1565747728) is exclusively released via the iOS App Store. Below is a history of all releases.\
[<img src="https://1467949168-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fna2foeoaXHYkSD3fhs0t%2Fuploads%2FK6d2y1pAbR37hgxQzkJa%2FAppStore.png?alt=media&#x26;token=520d7d4c-a36f-42cf-8e1b-6c3a75ad3fc8" alt="" data-size="original">](https://apps.apple.com/us/app/lisppad-go/id1565747728)

<details>

<summary>Version 2.2.1</summary>

*<mark style="color:green;">Date:</mark>* 2026-02-22\
\&#xNAN;*<mark style="color:green;">Changes:</mark>*

* Allow executing commands by pressing return on hardware keyboards
* Revamped keyboard experience supporting a second extension focused on navigation
* Redesigned definition/document structure switchboard user experience
* Refreshed user experience for some panels
* Fixed inconsistent documentation font sizes
* Fixed bugs involving indentation and commenting features

</details>

<details>

<summary>Version 2.2</summary>

*<mark style="color:green;">Date:</mark>* 2026-02-15\
\&#xNAN;*<mark style="color:green;">Changes:</mark>*

* Updated app icon
* New library and documentation browser
* New "center menu" in the editor
* Reimplemented canvas view to allow for more complex drawings
* Fixed bugs in the file organizer
* Allow overriding `Prelude.scm`
* Bug fixes involving `quasiquote` and `cond-expand`
* New library for handling locations: `(lispkit location)`
* New library for creating and editing PDF documents: `(lispkit pdf)`
* New library for solving computer vision problems: `(lispkit vision)`
* New libraries for processing/manipulating images: `(lispkit image)`, `(lispkit image process)`
* New library for drawing maps: `(lispkit draw map)`
* New library for making and drawing snapshots of web pages: `(lispkit draw web)`
* Extensions of libraries `(lispkit draw)`, `(lispkit core)`, `(lispkit enum)`, `(lispkit date-time)`, and `(lispkit object)`
* New sample code: `ImageComposition.scm`, `OCR.scm`, `MermaidDiagrams.scm`, `Pinterest.scm`
* Updated [LispPad Library Reference](https://zenger.org/lisppad/assets/LispPad_Reference_2.2.pdf)
* Interpreter now based on LispKit 2.6.0

</details>

<details>

<summary>Version 2.1</summary>

*<mark style="color:green;">Date:</mark>* 2024-11-23\
\&#xNAN;*<mark style="color:green;">Changes:</mark>*

* Fixed keyboard shortcuts
* Reimplemented edit menu
* Support separate sets of editor color schemes for light and dark mode
* Allow setting the appearance (light vs. dark) at the application level
* Extended available coding fonts
* Support for all major JSON standards via libraries `(lispkit json)` and `(lispkit json schema)`
* Support for HTTP-based networking via libraries `(lispkit http)`, `(lispkit http oauth)`, and `(lispkit http server)`
* Deeper integrations into macOS and iOS operating systems via libraries `(lispkit system keychain)` and `(lispkit system pasteboard)`
* Support for drawing a variety of different types of bar codes via library `(lispkit draw barcode)`
* New libraries: `(lispkit url)`, `(lispkit serialize)`, `(lispkit thread future)`, and `(lispkit thread shared-queue)`
* Extended libraries: `(lispkit box)`, `(lispkit thread)`, `(lispkit system)`, `(lispkit bytevector)`, `(lispkit markdown)`, `(lispkit dynamic)`, `(lispkit control)`
* New sample code: `Keychain.scm`, `WebAPIs.scm`, and `Webserver.scm`
* Updated [LispPad Library Reference](https://zenger.org/lisppad/assets/LispPad_Reference_2.1.pdf)
* Interpreter now based on LispKit 2.5.0

</details>

<details>

<summary>Version 2.0.1</summary>

*<mark style="color:green;">Date:</mark>* 2024-03-03\
\&#xNAN;*<mark style="color:green;">Changes:</mark>*

* Support sharing of canvases
* Support smarter parenthesis matching for Lisp code
* Reimplemented overflow menu of the editor, fixing bugs and providing new line-level features
* Reimplemented REPL command history (long-press on "Send" button)
* Reimplemented the "Load"/+ menu for reloading recent files and the editor buffer
* Log files being loaded into the interpreter
* Fixed cursor placement in the interpreter input
* Fixed bug preventing the editor buffer to be emptied when "New" was selected
* Fixed opening recent and starred files
* Improved consistency of icon usage with LispPad on macOS
* Updated LispPad Library Reference

</details>

<details>

<summary>Version 2.0</summary>

*<mark style="color:green;">Date:</mark>* 2024-02-12\
\&#xNAN;*<mark style="color:green;">Changes:</mark>*

* Redesigned the navigation between interpreter and editor
* Redesigned the split screen mode for iPads, allowing free positioning of the splitter&#x20;
* Redesigned file/directory browser fixing usability issues and supporting file previews
* Introduced drawing canvases (left-swipe in console) in addition to the log view (right-swipe in console)
* Libraries can be imported via a swipe in the Libraries view; support for library list refresh
* User experience bug fixes, especially involving modal sheets
* Ported universal formatting facility from Common Lisp and made it available via library `(lispkit format)`
* Library `(lispkit records)` now supports extensible records compatible to SRFI 131&#x20;
* Made application scriptable via library `(lisppad system ios)`
* Extended libraries: `(lispkit system)`, `(lispkit port)`, `(lispkit bitset)`, `(lispkit system)`, `(lispkit draw)`, `(lispkit draw turtle)`, `(lispkit core)`, `(lispkit type)`, `(lispkit bytevector)`
* New libraries: `(lisppad system ios)`, `(lisppad turtle)`, `(lispkit format)`, `(lispkit crypto)`, `(lispkit archive tar)`, `(lispkit list set)`, `(srfi 239)`, `(srfi 235)`
* New sample code: `Fractals.scm`, `Blockchain.scm`
* Interpreter now based on LispKit 2.4.0

</details>

<details>

<summary>Version 1.3.4</summary>

*<mark style="color:green;">Date:</mark>* 2023-02-12\
\&#xNAN;*<mark style="color:green;">Changes:</mark>*

* Improved management of recent files and favorites.
* Remember last edited file (can be switched off in the settings)
* Improved display of file names in the editor
* Fixed bug affecting bytevector copy procedures in library `(lispkit bytevector)`
* Extended library: `(lispkit graph)`
* New libraries: `(srfi 228)`, `(srfi 233)`, and `(srfi 236)`
* Interpreter now based on LispKit 2.3.2

</details>

<details>

<summary>Version 1.3.3</summary>

*<mark style="color:green;">Date:</mark>* 2022-12-27\
\&#xNAN;*<mark style="color:green;">Changes:</mark>*

* User interface changes to optimize the look and feel for iOS 16, including revised key bindings
* Access to the log viewer in the console by swiping right
* New settings for defining the maximum stack size and the maximum number of active calls to trace upon errors
* New setting to prevent virtual keyboard extensions to be shown if there is a hardware keyboard
* Display call stack when errors are shown on the console
* Limit stack size to prevent application crashes
* Fixed bug leading to deadlocks when using text ports
* Fixed bug allowing to execute empty lists
* Fixed serious bug leading to an infinite loop when iterating through stack traces
* New procedure in library `(lispkit thread)`: `thread-max-stack`
* New library: `(lisppad draw map)`
* New sample code: `DisplayMap.scm`
* Interpreter now based on LispKit 2.3.1

</details>

<details>

<summary>Version 1.3.2</summary>

*<mark style="color:green;">Date:</mark>* 2022-09-21\
\&#xNAN;*<mark style="color:green;">Changes:</mark>*

* iOS 16 bug fixes

</details>

<details>

<summary>Version 1.3.1</summary>

*<mark style="color:green;">Date:</mark>* 2022-08-15\
\&#xNAN;*<mark style="color:green;">Changes:</mark>*

* Performance improvements: Optimized code generation for lambdas without captured expressions
* Fixed division by zero issues with truncate and floor procedures
* Made procedure open-file of library (lispkit system) work on iOS
* Extended libraries: (lispkit core), (lispkit string), (lispkit math), (lispkit type), (lispkit enum), (lispkit draw), and (lispkit clos)
* New libraries: (lispkit math matrix), (lispkit bitset), (lispkit styled-text), (lispkit draw chart bar), (srfi 118), (srfi 141), (srfi 149), and (srfi 232)
* New sample code: ObjectOrientation.scm, DrawBarCharts.scm, and StyledTextDoc.scm
* Interpreter now based on LispKit 2.3.0

</details>

<details>

<summary>Version 1.3</summary>

*<mark style="color:green;">Date:</mark>* 2022-03-02\
\&#xNAN;*<mark style="color:green;">Changes:</mark>*

* Allow setting font in preferences; allow for more granular font size choice
* Support for threads
* Go-inspired channels for synchronizing threads
* Revamp of math libraries, addressing incompatibilities and fixing numerous bugs
* Extended libraries (lispkit math), (lispkit math util), (lispkit system), (lispkit port), and (lispkit debug)
* New libraries: (lispkit thread), (lispkit thread channel), (scheme flonum), (srfi 18), (srfi 144), (srfi 208), and (srfi 230)
* Exceptions now include more information about the active call stack
* Interpreter now based on LispKit 2.2.0

</details>

<details>

<summary>Version 1.2.2</summary>

*<mark style="color:green;">Date:</mark>* 2021-12-17\
\&#xNAN;*<mark style="color:green;">Changes:</mark>*

* Adjusted colors used in REPL to improve legibility
* Fixed bug leading to symbol definition views disappearing behind the keyboard

</details>

<details>

<summary>Version 1.2.1</summary>

*<mark style="color:green;">Date:</mark>* 2021-12-16\
\&#xNAN;*<mark style="color:green;">Changes:</mark>*

* Integrated log viewer into console
* Increased stack size of interpreter
* Fixed file/editor loader
* Fixed scrolling within console
* Included new documentation for libraries (lispkit prolog), (lispkit math stats), (lispkit math util), (lispkit text-table), (srfi 166), (srfi 227), and (srfi 229)
* Interpreter now based on LispKit 2.1.0

</details>

<details>

<summary>Version 1.2</summary>

*<mark style="color:green;">Date:</mark>* 2021-10-03\
\&#xNAN;*<mark style="color:green;">Changes:</mark>*

* Optimized user interface for iOS 15
* Improved synchronization with iCloud Drive
* New in-context documentation viewer
* Searchable Libraries view; include libraries that are not loaded
* Support for search/replace; save search/replace history; enable case-insensitive search
* New procedures icloud-directory and cloud-list in library (lisppad system)
* Bug fixes in library (lisppad location)
* Interpreter now based on LispKit 2.0.3

</details>

<details>

<summary>Version 1.1.2</summary>

*<mark style="color:green;">Date:</mark>* 2021-08-19\
\&#xNAN;*<mark style="color:green;">Changes:</mark>*

* Comprehensive support for keyboard shortcuts
* Keyboard shortcut documentation accessible via LispPad menu
* Fixed split view-related bugs (on iPadOS)
* New library (lisppad location) supporting geocoding and reverse geocoding
* New procedure open-in-files-app in library (lisppad system)
* New example code
* Interpreter now based on LispKit 2.0.2

</details>

<details>

<summary>Version 1.1.1</summary>

*<mark style="color:green;">Date:</mark>* 2021-07-04\
\&#xNAN;*<mark style="color:green;">Changes:</mark>*

* Extended keyboard for editing Markdown and Scheme code
* Extended edit menu with support for looking up Scheme definitions in console and editor
* Syntax highlighting, parenthesis matching, automatic indentation in console
* Undo/redo support on iPhones
* Improved keyboard dismissal in console
* New example code
* Interpreter now based on LispKit 2.0.1

</details>

<details>

<summary>Version 1.1</summary>

*<mark style="color:green;">Date:</mark>* 2021-06-11\
\&#xNAN;*<mark style="color:green;">Changes:</mark>*

* Console/editor split view on iPadOS
* Markdown document previewer
* Table of contents for markdown documents
* Display graphics directly in the console
* Support tighter line spacing in the console
* Display stack trace in console for errors
* Allow dismissing the keyboard in the editor view
* New library (lispkit archive zip) for creating, reading, and writing zip archives

</details>

<details>

<summary>Version 1.0.1</summary>

*<mark style="color:green;">Date:</mark>* 2021-05-06\
\&#xNAN;*<mark style="color:green;">Changes:</mark>*

* Support opening files in LispPad Go triggered by other apps
* Fixed various dark mode-related bugs
* File handling improvements and bug fixes
* Text editor display improvements

</details>

<details>

<summary>Version 1.0</summary>

*<mark style="color:green;">Date:</mark>* 2021-05-06\
\&#xNAN;*<mark style="color:green;">Changes:</mark>*

* Initial version

</details>