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uutils: enable shell completions

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This adds a hidden `completion` subcommand to coreutils. When invoked with
`coreutils completion <utility> <shell>` a completion file will be printed
to stdout. When running `make install` those files will be created for all
utilities and copied to the appropriate locations.
`make install` will install completions for zsh, fish and bash; however,
clap also supports generating completions for powershell and elvish.

With this patch all utilities are required to have a publich uu_app function
that returns a clap::App in addition to the uumain function.
This commit is contained in:
Michael Debertol 2021-06-15 15:35:49 +02:00
parent 0531153fa6
commit a9e79c72c7
5 changed files with 76 additions and 23 deletions
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Cargo.toml
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@ -225,6 +225,7 @@ test = [ "uu_test" ]
[workspace]
[dependencies]
clap = "2.33.3"
lazy_static = { version="1.3" }
textwrap = { version="=0.11.0", features=["term_size"] } # !maint: [2020-05-10; rivy] unstable crate using undocumented features; pinned currently, will review
uucore = { version=">=0.0.8", package="uucore", path="src/uucore" }