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Create unit test illustrating unknown flag bug #1854

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merged 1 commit into from
Nov 15, 2022

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brianpursley
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Created a unit test that tests the unknown flag error message when the unknown flag is located in different arg positions.

I think this bug (the first test case with the FIXME comment) has been around for a long time, and I decided to create a test to demonstrate it.

I haven't really looked into how this might be fixed yet, just thought I would start with a test first.

Created a unit test that tests the unknown flag
error message when the unknown flag is located
in different arg positions.
@brianpursley
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main branch name got me, should be fixed now 🤞

@marckhouzam marckhouzam added area/flags-args Changes to functionality around command line flags and args kind/testing CI/CD, testing, etc. for cobra labels Nov 15, 2022
@marckhouzam marckhouzam added this to the 1.7.0 milestone Nov 15, 2022
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Thanks @brianpursley.
You probably have it in mind already but my guess is that stripFlags() swallows the argument (or flag name) that follows --unknown

@marckhouzam marckhouzam merged commit ad6db7f into spf13:main Nov 15, 2022
Dav-14 added a commit to formancehq/cobra that referenced this pull request Mar 15, 2024
* Create unit test illustrating unknown flag bug (spf13#1854)

Created a unit test that tests the unknown flag
error message when the unknown flag is located
in different arg positions.

* Update stale.yml (spf13#1863)

* fix: force ForEach-Object to return array in pwsh completion (spf13#1850)

Fixes spf13#1847

* Makefile: add target richtest (spf13#1865)

Don't require contributors to install richgo but keep it as an option and for CI

* build(deps): bump golangci/golangci-lint-action from 3.2.0 to 3.3.1 (spf13#1851)

Bumps [golangci/golangci-lint-action](https://github.com/golangci/golangci-lint-action) from 3.2.0 to 3.3.1.
- [Release notes](https://github.com/golangci/golangci-lint-action/releases)
- [Commits](golangci/golangci-lint-action@v3.2.0...v3.3.1)

---
updated-dependencies:
- dependency-name: golangci/golangci-lint-action
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

* Update kubescape org (spf13#1874)

Signed-off-by: David Wertenteil <[email protected]>

* ci: deprecate go 1.15 (spf13#1866)

Remove testing for go 1.15 to allow CI to pass, but don't force projects to upgrade.

* fix: conflict import name with variable (spf13#1879)

`template` is an import in `cobra.go` file and also used as a variable
name, which masks the library in the scope of that function.

* Update badge route (spf13#1884)

Based on
badges/shields#8671

* fix: func name in doc strings (spf13#1885)

Corrected the function name at the start of doc strings, as per the convention
outlined in official go documentation: https://go.dev/blog/godoc

* completions: do not detect arguments with dash as 2nd char as flag (spf13#1817)

Fixes spf13#1816

Previously, arguments with a dash as the second character (e.g., 1-ff00:0:1)
were detected as a flag by mistake. This resulted in auto completion misbehaving
if such an argument was last in the argument list during invocation.

* build(deps): bump github.com/inconshreveable/mousetrap (spf13#1872)

* Add documentation about disabling completion descriptions (spf13#1901)

* Improve MarkFlagsMutuallyExclusive example in User Guide (spf13#1904)

* Update shell_completions.md (spf13#1907)

align documentation with the code : completions.go:452

* build(deps): bump golangci/golangci-lint-action from 3.3.1 to 3.4.0 (spf13#1902)

* Removes stale bot from GitHub action (spf13#1908)

Signed-off-by: John McBride <[email protected]>

* Add keeporder to shell completion (spf13#1903)

This allows programs to request the shell to maintain the order of completions that was returned by the program

* Add support for PowerShell 7.2+ (spf13#1916)

PowerShell 7.2 has changed the way arguments are passed to executables.
This was originally an experimental feature in 7.2, but as of 7.3 it is
built-in. A simple "" is now sufficient for passing empty arguments, no
back-tick escaping is required.

Fixes spf13#1849

Signed-off-by: Oldřich Jedlička <[email protected]>
Co-authored-by: Oldřich Jedlička <[email protected]>

* ci: deprecate go 1.16 (spf13#1926)

* ci: test Golang 1.20 (spf13#1925)

* update copyright year (spf13#1927)

* Update projects_using_cobra.md (spf13#1932)

Signed-off-by: Florent Poinsard <[email protected]>

* Document suggested layout for subcommands (spf13#1930)

Signed-off-by: Luiz Carvalho <[email protected]>

* Allow sourcing zsh completion script (spf13#1917)

Although it is not the recommended approach, sourcing a completion
script is the simplest way to get people to try using shell completion.
Not allowing it for zsh has turned out to complicate shell completion
adoption.  Further, many tools modify the zsh script to allow sourcing.

This commit allows sourcing of the zsh completion script.

Signed-off-by: Marc Khouzam <[email protected]>

* Update main image to better handle dark background (spf13#1883)

Fixes spf13#1880

Signed-off-by: Marc Khouzam <[email protected]>
Co-authored-by: Deleplace <[email protected]>

* Fix typo in fish completions (spf13#1945)

* build(deps): bump golangci/golangci-lint-action from 3.4.0 to 3.5.0 (spf13#1971)

* Fix grammar: 'allows to' (spf13#1978)

The use in generated bash completion files is getting flagged by
Lintian (the Debian package linting tool).

Signed-off-by: Taavi Väänänen <[email protected]>

* test: make fish_completions_test more robust (spf13#1980)

Use temporary files instead of assuming the current directory is
writable. Also, if creating a temporary file still returns an error,
prevent the test from failing silently by replacing `log.Fatal` with
`t.Fatal`.

* powershell: escape variable with curly brackets (spf13#1960)

This fixes an issue with program names that include a dot, in our case
`podman.exe`. This was caused by the change in commit 6ba7ebb.

Fixes spf13#1853

Signed-off-by: Paul Holzinger <[email protected]>

* build(deps): bump golangci/golangci-lint-action from 3.5.0 to 3.6.0 (spf13#1976)

* Move documentation sources to site/content (spf13#1428)

* Add 'one required flag' group (spf13#1952)

* golangci: enable 'unused' and disable deprecated replaced by it (spf13#1983)

* doc: fix typo, Deperecated -> Deprecated (spf13#2000)

* minor corrections to unit tests (spf13#2003)

* build(deps): bump golangci/golangci-lint-action from 3.6.0 to 3.7.0 (spf13#2021)

* command: temporarily disable G602 due to securego/gosec#1005 (spf13#2022)

* ci: test golang 1.21 (spf13#2024)

* Customizable error message prefix (spf13#2023)

* feat: add getters for flag completions (spf13#1943)

* Add notes to doc on preRun and postRun condition (spf13#2041)

* build(deps): bump actions/setup-go from 3 to 4 (spf13#1934)

* build(deps): bump github.com/cpuguy83/go-md2man/v2 from 2.0.2 to 2.0.3 (spf13#2047)

* Allow running persistent run hooks of all parents (spf13#2044)

Currently, only one of the persistent pre-runs and post-runs is executed.
It is always the first one found in the parents chain, starting at this command.
Expected behavior is to execute all parents' persistent pre-runs and post-runs.

Dependent projects implemented various workarounds for this:
- manually building persistent hook chains (in every hook).
- applying some kind of monkey-patching on top of Cobra.

This change eliminates the necessity for such workarounds
by allowing to set a global variable EnableTraverseRunHooks.

Tickets:
- spf13#216
- spf13#252

Signed-off-by: Volodymyr Khoroz <[email protected]>

* Fix linter errors (spf13#2052)

When using golangci-lint v1.55.0 some new errors were being reported.

Signed-off-by: Marc Khouzam <[email protected]>

* Don't complete --help flag when flag parsing disabled (spf13#2061)

Fixes spf13#2060

When a command sets `DisableFlagParsing = true` it requests the
responsibility of doing all the flag parsing. Therefore even the
`--help/-f/--version/-v` flags should not be automatically completed
by Cobra in such a case.

Without this change the `--help/-h/--version/-v` flags can end up being
completed twice for plugins: one time from cobra and one time from the
plugin (which has set `DisableFlagParsing = true`).

Signed-off-by: Marc Khouzam <[email protected]>

* Add tests for flag completion registration (spf13#2053)

Different problems have been reported about flag completion registration.
These two tests are the cases that were not being verified but had been
mentioned as problematic.

Ref:
- spf13#1320
- spf13#1438 (comment)

Signed-off-by: Marc Khouzam <[email protected]>

* Replace all non-alphanumerics in active help env var program prefix (spf13#1940)

* Replace all non-alphanumerics in active help env var program prefix

There are other characters besides the dash that are fine in program
names, but are problematic in environment variable names. These include
(but are not limited to) period, space, and non-ASCII letters.

* Another change in docs to mention non-ASCII-alphanumeric instead of just dash

* build(deps): bump actions/checkout from 3 to 4 (spf13#2028)

* Support usage as plugin for tools like kubectl (spf13#2018)

In this case the executable is `kubectl-plugin`, but we run it as:

    kubectl plugin

And the help text should reflect the actual usage of the command.

To create a plugin, add the cobra.CommandDisplayNameAnnotation:

    rootCmd := &cobra.Command{
        Use: "plugin",
        Annotations: map[string]string{
            cobra.CommandDisplayNameAnnotation: "kubectl plugin",
        }
    }

Internally this change modifies CommandPath() for the root command to
return the command display name instead of the command name. This is
used for error messages, help text generation, and completions.

CommandPath() is expected to have spaces and code using it already
handle spaces (e.g replacing with _), so hopefully this does not break
anything.

Fixes: spf13#2017

Signed-off-by: Nir Soffer <[email protected]>

* Improve API to get flag completion function (spf13#2063)

The new API is simpler and matches the `c.RegisterFlagCompletionFunc()`
API.  By removing the global function `GetFlagCompletion()` we are more
future proof if we ever move from a global map of flag completion
functions to something associated with the command.

The commit also makes this API work with persistent flags by using
`c.Flag(flagName)` instead of `c.Flags().Lookup(flagName)`.

The commit also adds unit tests.

Signed-off-by: Marc Khouzam <[email protected]>

* feat: expose GetCompletions (was getCompletions)

---------

Signed-off-by: dependabot[bot] <[email protected]>
Signed-off-by: David Wertenteil <[email protected]>
Signed-off-by: John McBride <[email protected]>
Signed-off-by: Oldřich Jedlička <[email protected]>
Signed-off-by: Florent Poinsard <[email protected]>
Signed-off-by: Luiz Carvalho <[email protected]>
Signed-off-by: Marc Khouzam <[email protected]>
Signed-off-by: Taavi Väänänen <[email protected]>
Signed-off-by: Paul Holzinger <[email protected]>
Signed-off-by: Volodymyr Khoroz <[email protected]>
Signed-off-by: Nir Soffer <[email protected]>
Co-authored-by: Brian Pursley <[email protected]>
Co-authored-by: Enrico Candino <[email protected]>
Co-authored-by: Norman Dankert <[email protected]>
Co-authored-by: Unai Martinez-Corral <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: David Wertenteil <[email protected]>
Co-authored-by: Yash Ladha <[email protected]>
Co-authored-by: Seonghyeon Cho <[email protected]>
Co-authored-by: Dominik Roos <[email protected]>
Co-authored-by: Shihta Kuan <[email protected]>
Co-authored-by: janhn <[email protected]>
Co-authored-by: Ggg6542 <[email protected]>
Co-authored-by: John McBride <[email protected]>
Co-authored-by: Gyanendra Mishra <[email protected]>
Co-authored-by: Oldřich Jedlička <[email protected]>
Co-authored-by: Oldřich Jedlička <[email protected]>
Co-authored-by: Florent Poinsard <[email protected]>
Co-authored-by: Luiz Carvalho <[email protected]>
Co-authored-by: Marc Khouzam <[email protected]>
Co-authored-by: Deleplace <[email protected]>
Co-authored-by: Tom Payne <[email protected]>
Co-authored-by: Taavi Väänänen <[email protected]>
Co-authored-by: Branch Vincent <[email protected]>
Co-authored-by: Paul Holzinger <[email protected]>
Co-authored-by: Martijn Evers <[email protected]>
Co-authored-by: gocurr <[email protected]>
Co-authored-by: Jun Nishimura <[email protected]>
Co-authored-by: Nuno Adrego <[email protected]>
Co-authored-by: Souma <[email protected]>
Co-authored-by: Alexandru-Claudius Virtopeanu <[email protected]>
Co-authored-by: Haoming Meng <[email protected]>
Co-authored-by: vkhoroz <[email protected]>
Co-authored-by: Ville Skyttä <[email protected]>
Co-authored-by: Nir Soffer <[email protected]>
Co-authored-by: Geoffrey Ragot <[email protected]>
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