FLAP

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Changelog ​

All notable changes to this project are documented here. Versions follow Semantic Versioning. Format follows Keep a Changelog.

[2.7.0] — 2026-11-02 ​

Added ​

  • cli: Error classes, exit_status and class in JSON errors

  • cli: Dry-run option

  • cli: Schema of one command

  • cli: Save_skill

Documentation ​

  • Exit statuses, dry-run contract and skill generation

  • Feature audit, close the gaps in the guide

  • Tutorials, agent features included

  • Site style after SHORE and StringiFor

  • Landing pages, features in the hero and animations

  • Phosphor logo and palette

Fixed ​

  • cli: --check and --dry-run after a command; report an undefined command of set_mutually_exclusive_groups

[2.6.0] — 2026-11-02 ​

Added ​

  • argument: Optional declared value type, validated by parse

  • utils: JSON string escaping and validation

  • cli: JSON description of the CLI, save_json_schema and --schema

  • cli: Structured errors, error_format and error_format_env

  • cli: Validate-only mode, --check

  • cli: JSON provenance, save_provenance and sensitive values

Documentation ​

  • Point the install instructions at master instead of a release tag

  • Machine-readable interfaces guide and example adapter

Fixed ​

  • argument: Reject malformed numeric and logical values instead of reading them as list items

  • cli: Close the gaps between parse, get and --check found by review

  • cli: A getter no longer parses again after a failed parse

  • argument: Mask sensitive values in error messages

[2.5.3] — 2026-10-08 ​

Fixed ​

  • ci: Run install smoke test from the release workflow

  • group: Sanitize the list defaults of commands not called

[2.5.2] — 2026-10-04 ​

Security ​

  • docs: Set an es2022 build target for the VitePress site

[2.5.1] — 2026-10-02 ​

Documentation ​

  • A new first impression, with an animated quick start

  • Point the install pins at v2.5.0

  • migration: Add the v2.5.0 upgrade notes

  • One reading path instead of a Guide and a Manual

  • cookbook: Fifteen more recipes, without the Python table

Fixed ​

  • cli: Set error_message for the errors of groups and arguments

  • cli: Do not print the unknown arguments that are ignored

[2.5.0] — 2026-10-02 ​

Fixed ​

  • build: Rename the quad precision macro _R16P to PENF_R16P ⚠ BREAKING CHANGE

[2.4.1] — 2026-10-01 ​

Documentation ​

  • Audit the guide against v2.4.0, samples built and run by a harness

  • manual: A tutorial, a cookbook and terminal images

  • Point the install pins and the upgrade notes at v2.4.1

Fixed ​

  • cla: Check the choices of a character value before truncating it

  • cla: Render a store* option with its switch

  • cla: Report a value that is not a number as ERROR_CASTING_NUMBER

  • completion: Name the bash function after the program

  • messages: Clearer wording of five error messages

  • help: A consistent layout of the help, man page and Markdown ⚠ BREAKING CHANGE

[2.4.0] — 2026-09-30 ​

Added ​

  • cli: Usage_on_error, a shorter output after an error

  • cli: --man builtin and the file names of --man and --markdown

Fixed ​

  • completion: Bash offers the options not yet typed, of the last command

[2.3.1] — 2026-09-30 ​

Documentation ​

  • Colours section, current build commands, upgrade page

Fixed ​

  • parse: A repeated command is an error

[2.3.0] — 2026-09-30 ​

Added ​

  • menu: Flap_menu_t, interactive single-choice menus

  • menu: Default options and default icon

  • menu: Retries, error kinds and end-of-input handling

  • menu: Multiple selection with separator

  • menu: Yes/no questions

  • menu: Option, question and error colours via FACE

[2.2.0] — 2026-09-30 ​

Added ​

  • cla: Metavar, the placeholder of a value in the help

  • completion: Bash file-name fallback and zsh completion

  • completion: Native fish completion script

  • completion: PowerShell completion script

  • completion: --show-completion and --install-completion

[2.1.0] — 2026-09-30 ​

Added ​

  • cla: Numeric ranges min/max/open/clamp, checked by get

  • cla: Switch_neg flag pairs --x/--no-x, the last one wins

  • cli: Case-insensitive switches, commands and choices

  • cli: Subcommand aliases, add_group(aliases=)

  • parse: "did you mean" suggestions for unknown switches and commands

  • cla: Key=value options, add(map=, map_keys=), get_map

  • cli: Copy_options, reusable option sets between commands

[2.0.0] — 2026-09-30 ​

Added ​

  • cli: Standalone init option; parse returns the help/version/markdown status

  • cli: Print "Try 'prog --help' for help." after a failed parse

  • cli: Raise_error for application-level errors

  • cli: No_args_is_help at CLI and command level

  • parse: Accept --option=value inline values

  • parse: Count action, with the compact -vvv form

  • parse: Append action collecting one value per occurrence

  • cli: Mutually exclusive sets of switches, optionally required

  • cli: Ignore_env init option turning every environment lookup off

  • envvar: Environment as the value source of an absent option ⚠ BREAKING CHANGE

  • cli: Auto_envvar_prefix generating the envvar of every option

  • envvar: List options read their variable as comma-separated values

  • config: INI configuration files as a value source (set_config)

  • cla: Act='config' option naming the configuration file

  • cli: Get_source and provenance, where every value comes from

  • cla: Path checks must_exist, readable, writable, allow_dash

  • cla: Deprecated options and commands warn when used

  • parse: Exclusive sets count every explicit source, command line first

  • parse: Alternate actions returning STATUS_ALTERNATE

  • parse: An explicitly empty value is the empty string ⚠ BREAKING CHANGE

  • parse: Nargs='*' passed without values is an empty list ⚠ BREAKING CHANGE

Changed ​

  • cla: Record the source of every value, getters use has_value

Fixed ​

  • release: Push only the new tag, not every reachable one

  • utils: Let nvfortran compile wstrip

  • cli: Store strings arrays as flap_string elements, runnable with nvfortran ⚠ BREAKING CHANGE

  • cli: A failed add no longer leaks its error into the next ones

[1.3.0] — 2026-09-29 ​

Added ​

  • flap: Re-export all error and status codes from the flap module

  • cli: Add reset_parse to parse again without redefining the CLI

Changed ​

  • parse: Match switch names through one matcher

  • list: Store and read lists through one API

  • cli: Split parse into a wrapper and parse_core; share the error prefix

  • usage: One renderer per output of an argument's signature

  • Delete the dead assignment(=) overloads

Documentation ​

  • claude: Rewrite stale project guide for FoBiS 3.8 and VitePress

  • claude: Document r16p mode and correct legacy flag claim

  • release: Add the v1.3.0 upgrade guide; bump CMake and fpm versions on release

Fixed ​

  • fobos: Use --gcov-analyzer flag for current FoBiS.py version

  • fobos: Repeat --gcov-analyzer flag for each argument value

  • cli: Work around gfortran 16 ICE in array-of-derived-type assignment

  • docs: Remove trailing comma in package.json devDependencies

  • docs: Untrack package-lock and pin esbuild for lock-free vite build

  • build: Add flap_test_utils to the makefile

  • parse: Report a duplicated switch on its own CLA and stop parsing

  • cla: Guard nargs before reading it in check_list_size

  • parse: Split argument strings with a single-pass quote scanner

  • cli: Read arguments whole and drop the gfortran fixed-length workaround

  • cla: Raise an error when get receives an unsupported variable type

  • parse: Assign positionals by their declared position

  • parse: Never take the value of an option as a command name

  • cla: Work around gfortran 13.3/14.2 corrupting character list values

  • cla: Enforce choices on every value of a varying-size list

  • cli: Include the builtin switches in outputs generated before parse

  • utils: Correct count, unique and replace_all in flap_utils_m

  • output: Correct the completion shebang and check file errors in save_*

  • object: Handle examples in free_object, assign_object and set_examples

  • cli: Return from get when the group is unknown

  • parse: Let a nargs='N' option take N values when more follow

  • completion: Generate a clean, stateless bash completion function

  • env: Read environment variables through one helper, at any length

  • cli: Resolve group names through one resolver, -1 when undefined

  • get: Reject a fixed-size array whose size differs from the list

  • get: Return the values of a list of flags from get_varying

  • add: Reject a list default whose count differs from nargs

  • add: Reject duplicate and missing positions

[1.2.14] — 2026-03-02 ​

Documentation ​

  • Refactor README to match StringiFor style conventions

[1.2.12] — 2026-02-18 ​

Documentation ​

  • Overhaul README and restructure VitePress guide

[1.2.8] — 2026-02-18 ​

Documentation ​

  • Add VitePress guide section and formal-generated API reference

[1.2.7] — 2026-02-18 ​

Documentation ​

  • Add CLAUDE.md with build commands and architecture guide

  • Migrate documentation pipeline from FORD to formal + VitePress

[0.6.1] — 2015-07-02 ​

Security ​

  • Fix deploy.sh script

Released under GPL v3, BSD 2-Clause, BSD 3-Clause or MIT, at your choice.