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Bash completion install doc improvements #3177

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Bash completion install doc improvements #3177

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a32157e
Point to /usr/share/bash-completion/completions for system bash compl…
scop Jan 22, 2023
30f5e62
Rephrase system-wide vs user-specific bash completion file dir note
scop Jan 22, 2023
ece7d09
Advise overwrite rather than append to existing bash completion files
scop Jan 22, 2023
65058ba
Make "modern" bash completion install recipes more dynamic
scop Jan 22, 2023
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4 changes: 2 additions & 2 deletions doc/user-guide/src/installation/index.md
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Expand Up @@ -73,10 +73,10 @@ simple as using one of the following:

```console
# Bash
$ rustup completions bash > ~/.local/share/bash-completion/completions/rustup
$ printf 'eval -- "$("$1" completions bash)"\n' > ~/.local/share/bash-completion/completions/rustup
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What is the value of using $1 here? It seems rather obfuscated to me.


# Bash (macOS/Homebrew)
$ rustup completions bash > $(brew --prefix)/etc/bash_completion.d/rustup.bash-completion
$ printf 'eval -- "$(rustup completions bash)"\n' > $(brew --prefix)/etc/bash_completion.d/rustup.bash-completion

# Fish
$ mkdir -p ~/.config/fish/completions
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13 changes: 8 additions & 5 deletions src/cli/help.rs
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Expand Up @@ -156,7 +156,7 @@ pub(crate) static DOC_HELP: &str = r"Discussion:
By default, it opens the documentation index. Use the various
flags to open specific pieces of documentation.";

pub(crate) static COMPLETIONS_HELP: &str = r"Discussion:
pub(crate) static COMPLETIONS_HELP: &str = r#"Discussion:
Enable tab completion for Bash, Fish, Zsh, or PowerShell
The script is output on `stdout`, allowing one to re-direct the
output to the file of their choosing. Where you place the file
Expand All @@ -175,7 +175,8 @@ pub(crate) static COMPLETIONS_HELP: &str = r"Discussion:
Run the command:

$ mkdir -p ~/.local/share/bash-completion/completions
$ rustup completions bash > ~/.local/share/bash-completion/completions/rustup
$ printf 'eval -- "$("$1" completions bash)"\n' \
> ~/.local/share/bash-completion/completions/rustup

This installs the completion script. You may have to log out and
log back in to your shell session for the changes to take effect.
Expand All @@ -186,7 +187,8 @@ pub(crate) static COMPLETIONS_HELP: &str = r"Discussion:
With the `bash-completion` brew formula installed, run the command:

$ mkdir -p $(brew --prefix)/etc/bash_completion.d
$ rustup completions bash > $(brew --prefix)/etc/bash_completion.d/rustup.bash-completion
$ printf 'eval -- "$(rustup completions bash)"\n' \
> $(brew --prefix)/etc/bash_completion.d/rustup.bash-completion

Fish:

Expand Down Expand Up @@ -270,11 +272,12 @@ pub(crate) static COMPLETIONS_HELP: &str = r"Discussion:

Bash:

$ rustup completions bash cargo > ~/.local/share/bash-completion/completions/cargo
$ printf 'eval -- "$(rustup completions bash cargo)"\n' \
> ~/.local/share/bash-completion/completions/cargo

Zsh:

$ rustup completions zsh cargo > ~/.zfunc/_cargo";
$ rustup completions zsh cargo > ~/.zfunc/_cargo"#;

pub(crate) static OFFICIAL_TOOLCHAIN_ARG_HELP: &str =
"Toolchain name, such as 'stable', 'nightly', \
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9 changes: 6 additions & 3 deletions tests/suite/cli-ui/rustup/rustup_completions_cmd_help_flag_stdout.toml
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Expand Up @@ -32,7 +32,8 @@ Discussion:
Run the command:

$ mkdir -p ~/.local/share/bash-completion/completions
$ rustup completions bash > ~/.local/share/bash-completion/completions/rustup
$ printf 'eval -- "$("$1" completions bash)"\\n' \\
> ~/.local/share/bash-completion/completions/rustup

This installs the completion script. You may have to log out and
log back in to your shell session for the changes to take effect.
Expand All @@ -43,7 +44,8 @@ Discussion:
With the `bash-completion` brew formula installed, run the command:

$ mkdir -p $(brew --prefix)/etc/bash_completion.d
$ rustup completions bash > $(brew --prefix)/etc/bash_completion.d/rustup.bash-completion
$ printf 'eval -- "$(rustup completions bash)"\\n' \\
> $(brew --prefix)/etc/bash_completion.d/rustup.bash-completion

Fish:

Expand Down Expand Up @@ -128,7 +130,8 @@ Discussion:

Bash:

$ rustup completions bash cargo > ~/.local/share/bash-completion/completions/cargo
$ printf 'eval -- "$(rustup completions bash cargo)"\\n' \\
> ~/.local/share/bash-completion/completions/cargo

Zsh:

Expand Down