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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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@ -314,6 +314,11 @@ else
endif
$(foreach man, $(filter $(INSTALLEES), $(basename $(notdir $(wildcard $(DOCSDIR)/_build/man/*)))), \
cat $(DOCSDIR)/_build/man/$(man).1 | gzip > $(INSTALLDIR_MAN)/$(PROG_PREFIX)$(man).1.gz &&) :
$(foreach prog, $(INSTALLEES), \
$(BUILDDIR)/coreutils completion $(prog) zsh > $(DESTDIR)$(PREFIX)/share/zsh/site-functions/_$(PROG_PREFIX)$(prog); \
$(BUILDDIR)/coreutils completion $(prog) bash > $(DESTDIR)$(PREFIX)/share/bash-completion/completions/$(PROG_PREFIX)$(prog); \
$(BUILDDIR)/coreutils completion $(prog) fish > $(DESTDIR)$(PREFIX)/share/fish/vendor_completions.d/$(PROG_PREFIX)$(prog).fish; \
)
uninstall:
ifeq (${MULTICALL}, y)