v0.13.0

v0.13.0 - 2026-04-07

Added

• match ... end pattern matching syntax with value matching, type matching, _ wildcard, maybe destructuring (just v/none), list destructuring ([a b ...rest]), and dict destructuring ({ 'key': v })
• map on dictionaries (maps over values, preserving keys)
• Functions
  • filter builtin now supports dictionaries, filtering by value while preserving keys
  • cdh
  • cdp
  • fromUnixTimeMicro
  • fromUnixTimeMilli
  • fromUnixTimeNano
  • prompt
  • toUnixTimeMicro
  • toUnixTimeMilli
  • toUnixTimeNano
  • toSvgPathStr
  • unlinesCrLf
  • scaleLinear
• Explicit version syntax (example: VER "v0.13.0") and execution. You can now specify the exact version a script should run with and this will force the execution to use that interpreter and corresponding standard library.
• Multiple cut/copy selections in file manager.

Fixed

• CLI interactive command execution now switches to a fresh output line before parsing/evaluation, so lexer/parser errors do not render on the prompt line.
• Lexer ERROR tokens now stop parsing immediately (including simple CLI parsing), preventing fall through to evaluation errors like unimplemented ERROR token handling.

Changed

• Startup now loads both std.msh and init.msh from version directories (msh/<version>/...), keeps init.msh optional for implicit current-version startup unless MSHINIT is set, requires it for VER scripts, re-execs VER scripts with msh-<version> when needed, and ignores MSHSTDLIB/MSHINIT for VER scripts.
• cartesian type signature changed. Now is [[a]] [a] -- [[a]]. This make it easy to chain more than one Cartesian product. Usually start the chain off with empty [[]] as an identity element.

What's Changed

• Add multiple cut/copy selections at once by @mitchpaulus in #161
• Feat/cdh builtin by @mitchpaulus in #162
• Improve lexer error handling by @mitchpaulus in #163
• Don't complete defs in binary CLI mode by @mitchpaulus in #164
• Fix quoting prefix ending with whitespace by @mitchpaulus in #165
• Add prompt built in by @mitchpaulus in #166
• Change prompt function signature by @mitchpaulus in #167
• Add some SVG utils by @mitchpaulus in #168
• Async preview pane by @mitchpaulus in #169
• Fix modal input in file manager by @mitchpaulus in #170
• Add other Unix time variations by @mitchpaulus in #171
• First pass at pattern matching by @mitchpaulus in #175
• Add unlinesCrLf by @mitchpaulus in #176
• Add mapping over dictionaries by @mitchpaulus in #177
• Clean up file manager architecture by @mitchpaulus in #178
• Improve logging by @mitchpaulus in #179
• More attempts at file manager fixes by @mitchpaulus in #180
• Versioning by @mitchpaulus in #172
• Init file loading by @mitchpaulus in #181
• Startup versioning rework by @mitchpaulus in #182
• Try fix CI by @mitchpaulus in #183
• Fix interactive completions by @mitchpaulus in #184
• Change Cartesian definition by @mitchpaulus in #185
• Parallel execution work by @mitchpaulus in #186
• Make filter built in work on dicts by @mitchpaulus in #188

Full Changelog: v0.12.0...v0.13.0

v0.12.0

Version bump for release (#160)

v0.11.0

0.11.0 - 2026-02-18

Added

• completionDefs builtin: pushes a dictionary of completion definitions, keyed by command name with quotation values
• mshFileManager builtin: pops a starting directory from the stack, opens the file manager, and cds to the final directory on exit
• msh fm now accepts an optional starting directory argument
• Built-in file manager via msh fm subcommand and Ctrl-O in interactive mode
  • Dual-pane layout with directory listing and file/directory preview
  • Vim-style navigation (j/k, h/l, gg/G, Ctrl-u/Ctrl-d)
  • Search with /, case-insensitive match highlighting, n/N to cycle matches
  • Rename with r, cursor positioned before extension, Ctrl-W word delete
  • Bookmarks with m + char to set, ; + char to jump
  • Editor integration with e (uses $EDITOR)
  • Directory change on quit (Ctrl-O returns to shell in new directory)
  • Version-sorted entries, directories first and colored blue
  • Binary file detection for preview
  • Preview caching for fast scrolling
  • Cut/copy/paste buffer (d cut, yy copy, p paste, c clear) shared across instances
  • Delete to trash (x) with confirmation, using platform-native trash
  • msh fm prints final directory to stdout for cd "$(msh fm)" usage

What's Changed

• Add first version of file manager by @mitchpaulus in #154
• Add cut/copy/paste to file manager by @mitchpaulus in #155
• Add mshFileManager builtin by @mitchpaulus in #156
• Add completionDefs built in by @mitchpaulus in #157
• Add sudo and systemd related completions by @mitchpaulus in #158

Full Changelog: v0.10.0...v0.11.0

v0.10.0

0.10.0 - 2026-02-13

Added

• Tail-call optimization (TCO) for recursive definitions in tail position.
• Functions
  • sin
  • cos
  • tan
  • arctan
  • ln
  • ln2
  • ln10
  • pow
  • random
  • randomFixed
  • randomNorm
  • sqrt
  • randomTri
  • tempFileExt
• CLI Alt-D inserts the current date as YYYY-MM-DD

Fixed

• Windows CMD.EXE /C quoting now handles quoted commands with extra arguments (e.g., npm.cmd paths with spaces).

Changed

• Builds/releases now are pure Go, built with CGO_ENABLED=0.

What's Changed

• Fix segfault with missing variable in prefix quote by @mitchpaulus in #139
• Add new math functions by @mitchpaulus in #140
• Add more random distribution functions by @mitchpaulus in #141
• Add tempFileExt, improve temp file docs and handling by @mitchpaulus in #142
• Feature/binary complete after bracket by @mitchpaulus in #143
• Feature/tab completion columns by @mitchpaulus in #144
• Add arctan and pow by @mitchpaulus in #146
• Add ALT-d date mapping by @mitchpaulus in #147
• Attempt to fix cmd quoting with quotes inside on first arg by @mitchpaulus in #148
• Add vscode run current file by @mitchpaulus in #149
• Respect my original tab column layout algorithm by @mitchpaulus in #150
• Update docs by @mitchpaulus in #151
• Working TCO by @mitchpaulus in #152
• Include standard lib in releases, update release CI by @mitchpaulus in #153

Full Changelog: v0.9.0...v0.10.0

v0.9.0

0.9.0 - 2026-01-27

Added

• Prefix quote syntax (functionName. ... end) as an alternative to (...) functionName
• <> operator for in-place file modification. Reads file to stdin, writes stdout back on success.
  Example: [sort -u] `file.txt` <> !
• Functions
  • chomp
  • cstToUtc
  • fromOleDate
  • toOleDate
  • __gitCompletion
  • __sshCompletion
  • strCmp
  • strEscape
  • reSplit
  • linearSearch
• Function definition metadata dictionaries in def signatures
• Definition-based CLI completions via the complete metadata key
• CLI completions for:
  • msh
  • git
  • fd
  • rg
  • ssh
• CLI history prefix search on Ctrl-N/Ctrl-P (case-insensitive)
• Alt-. to cycle last argument from history in the CLI
• Bin map file and msh bin CLI commands for binary overrides
• msh completions subcommand for bash, fish, nushell, and elvish
• CLI syntax highlighting for environment variables
• GitHub Action for installing mshell in CI workflows
• Append stderr redirection with 2>>
• Combined stdout/stderr redirection with &> (truncate) and &>> (append)
• Same-path detection when using > and 2> with identical paths (shares single file descriptor)
• Full stderr redirection support for quotations (2>, 2>>, &>, &>>)
• Null byte validation for redirection file paths and cp/mv commands

Fixed

• CLI binary mode now converts literal redirect targets (e.g., cmd > file.txt converts file.txt to a string for stdout, path for stdin)
• CTRL-C now only kills the running subprocess instead of both the subprocess and the shell

Changed

• Breaking change: @name now only reads mshell variables and no longer falls back to environment variables; use $NAME for environment access.
• w/we now accept binary input and write raw bytes to stdout/stderr.
• Renamed .s to stack, .def to defs, .env to env
• Removed .b (use binPaths instead)

What's Changed

• Add CTRL-n/p history by @mitchpaulus in #89
• Implement tab cycling by @mitchpaulus in #90
• Clear tab completions on enter by @mitchpaulus in #91
• Implement ALT-. by @mitchpaulus in #92
• Add OLE date functions by @mitchpaulus in #93
• Add new binary mapping functionality by @mitchpaulus in #94
• Add first pass at completions by @mitchpaulus in #95
• Add env var CLI highlighting by @mitchpaulus in #96
• Feature/function def metadata by @mitchpaulus in #98
• Add first pass at custom binary completions by @mitchpaulus in #99
• Add git completion by @mitchpaulus in #100
• Add 'rg' and 'fd' completions by @mitchpaulus in #101
• Completions by @mitchpaulus in #97
• Tab complete on built ins and defs by @mitchpaulus in #102
• Add strEscape by @mitchpaulus in #103
• Improve git add completion by @mitchpaulus in #105
• Add if/else syntax by @mitchpaulus in #106
• Update completions to use new if/else syntax by @mitchpaulus in #107
• Stderr redirect append by @mitchpaulus in #108
• Refactor completion for testability by @mitchpaulus in #109
• Improve bin audit search by @mitchpaulus in #111
• CLI Pipeline by @mitchpaulus in #110
• Fix CLI redirection literals by @mitchpaulus in #112
• Add reSplit function by @mitchpaulus in #113
• Feature/combined stdout stderr redirect by @mitchpaulus in #115
• VS Code LSP support by @mitchpaulus in #114
• Vscode by @mitchpaulus in #116
• Update docs by @mitchpaulus in #117
• Add ssh completion by @mitchpaulus in #118
• Update variable retrieval, no environment fallback by @mitchpaulus in #120
• Add check on Agent files being the same by @mitchpaulus in #121
• Implement CTRL-space in CLI with no alias by @mitchpaulus in #122
• Add chomp function by @mitchpaulus in #123
• Add in-place edit operator <> by @mitchpaulus in #124
• Add strCmp function by @mitchpaulus in #126
• Update README by @mitchpaulus in #127
• Add linearSearch by @mitchpaulus in #128
• Add ability to write a binary to stdout/stderr by @mitchpaulus in #129
• Update completion ordering by @mitchpaulus in #130
• Add CTRL-c capability by @mitchpaulus in #131
• Add newline for prompt if not column 1 by @mitchpaulus in #132
• Add action.yml by @mitchpaulus in #133
• Prefix funcs WIP by @mitchpaulus in #134
• Add CST to UTC by @mitchpaulus in #135
• Prepare 0.9.0 release by @mitchpaulus in #136
• Action fix by @mitchpaulus in #137
• Another fix try by @mitchpaulus in #138

Full Changelog: v0.8.0...v0.9.0

v0.8.0

0.8.0 - 2025-12-29

Added

• Functions
  • 2each
  • 2tuple
  • floatCmp
  • ceil
  • floor
  • leftPad
  • lastIndexOf
  • numFmt
  • preserveInt option for numFmt
  • now
  • date
  • nullDevice
  • enumerate
  • enumerateN
  • takeWhile
  • dropWhile
  • 2unpack
  • 2apply
  • title
  • zipDirInc
  • zipDirExc
  • zipDir
  • zipPack
  • zipList
  • zipExtract
  • zipExtractEntry
  • zipRead
  • chunk
  • repeat
  • return
  • toJson
  • base64encode
  • base64decode
  • : shorthand for get
• timeout option for httpGet and httpPost
• Support for comma-separated variable stores (e.g. a!, b!, c!)
• LSP completion suggestions for @ variable references
• LSP rename support for variables scoped to definitions and globals
• Default CTRL-F binding matching fish shell behavior
• Execution operators for capturing stdout/stderr as strings or binary (*b, ^, ^b)

Changed

• Breaking change: renamed the builtin that returns the current datetime from date to now; date now truncates a datetime to its date-only component.
• parseJson now accepts binary input and decodes it as UTF-8 before parsing.
• fileExists now uses golang os.Lstat instead of os.Stat, meaning if you have a broken symlink in Linux, fileExists will now return true instead of false.
• Slice semantics are slightly different. You now get a new backing array guaranteed for slice. This would come up if you did a partial slice (0:n), and then extended that in a loop or map. You could then be "extending" into the same backing array, causing previous items in the loop to be overwritten.
• mv will now allow moving a file path into a directory path. Previously had to be file to file.
• skip and take no longer throw exception when n is greater than the length of the list.
• Input redirection can now accept binary data directly and stream it to stdin without string conversion.

Fixed

• Fixed infinite loop in versionSortCmp when non-digit after digit.

What's Changed

• docs: sync Evaluator built-ins by @mitchpaulus in #43
• Update function documentation by @mitchpaulus in #44
• Update navigation styling by @mitchpaulus in #45
• Update README by @mitchpaulus in #46
• Update help by @mitchpaulus in #47
• Test doc deploy by @mitchpaulus in #48
• Add parseLinkHeader by @mitchpaulus in #51
• Start of LSP by @mitchpaulus in #49
• Add Notepad++ user language definition for mshell by @mitchpaulus in #52
• Gopls by @mitchpaulus in #53
• Add leftPad by @mitchpaulus in #54
• Update sublime-syntax by @mitchpaulus in #55
• Update 'date' to strip time and add 'now' to put current time on stack by @mitchpaulus in #56
• New funcs by @mitchpaulus in #57
• Add LSP completion for variable references by @mitchpaulus in #58
• LSP Rename by @mitchpaulus in #59
• Add 2tuple by @mitchpaulus in #60
• Update parseJson to take a binary on the stack by @mitchpaulus in #61
• Add dictionary type items by @mitchpaulus in #62
• Add enumerate functions to standard lib by @mitchpaulus in #63
• Zip work by @mitchpaulus in #67
• Add floor and ceil functions by @mitchpaulus in #69
• Chunk by @mitchpaulus in #70
• repeat by @mitchpaulus in #71
• Add lastIndexOf by @mitchpaulus in #72
• title function by @mitchpaulus in #73
• WIP by @mitchpaulus in #74
• toJson work by @mitchpaulus in #75
• Add return function by @mitchpaulus in #76
• Implement CTRL-f like fish by @mitchpaulus in #77
• Binary redirect test by @mitchpaulus in #79
• Add binary dump by @mitchpaulus in #80
• Change implementation for 'lines' by @mitchpaulus in #82
• Add base64encode and base64decode by @mitchpaulus in #83
• Getter by @mitchpaulus in #84
• Feature/docs functions toc by @mitchpaulus in #85
• Add a getting started page by @mitchpaulus in #86
• Pointer to Value receivers by @mitchpaulus in #87
• Update CI for doc building by @mitchpaulus in #88

Full Changelog: v0.7.0...v0.8.0

v0.7.0

0.7.0 - 2025-10-03

Added

• Basic tab completion for the CLI
• Basic HTML parsing
• Start of VS code extension
• httpGet and httpPost for making web requests.
• Functions
  • isNone
  • parseHtml
  • absPath
  • bind
  • findByTag
  • concat
  • cartesian
  • groupBy
  • reFind
  • reFindAllIndex
  • md5
  • eachWhile
  • rmf
  • take
  • skip

Fixed

• Handling of .cmd and .bat
• Now immediately close file when appending
• mv made more robust
• Fixed broken line/columns in lexing
• Better handling of UTF-8 input

Changed

• Now return Maybes for conversions
• Removed canParseDt
• get returns Maybe
• No escaping in path literals
• In JSON mappings, null now goes to none, not 0.
• fileSize now returns Maybe

What's Changed

• Moving to single 'Render' function for CLI by @mitchpaulus in #38
• Fix broken lexing lines and cols by @mitchpaulus in #42

Full Changelog: v0.6.0...v0.7.0

v0.6.0

v0.6.0 updates

v0.5.0

Bump version

v0.4.1

Add version sorting `sortV` and `sortVu`