Add a config option to make --apply=false the default for chezmoi update

[infused-kim]

Is your feature request related to a problem? Please describe.

Most of the time when I use chezmoi update I don't want to immediately apply the changes. I usually want to review them first to see what the machine-specific differences will be. And oftentimes I also need to run chezmoi init first.

Describe the solution you'd like

A config option that causes chezmoi update to only pull in the changes, but not to apply them automatically.

[update]
   always_apply = false

Describe alternatives you've considered

In the meantime I have created a zsh and fish function that aliases the sub-command.

It's also possible to run chezmoi git pull, but it would be nice if this was a built-in feature as other people may have the same need.

My functions that other people can use in the meantime as a workaround:

chezmoi() {
    case "$1" in
        "update")
            command chezmoi update --apply=false
            ;;
        *)
            command chezmoi "$@"
            ;;
    esac
}

function chezmoi
    switch "$argv[1]"
        case "update"
            command chezmoi update --apply=false
        case "*"
            command chezmoi $argv
    end
end

[halostatue]

Does

[update]
  args = ["--apply=false"]

not work?

I don't use the chezmoi update command (mostly because I am pushing from one machine to github; I don't currently have multiple machines that I worry about), so I'm not sure if it would work or not.

[infused-kim]

Does

[update]
  args = ["--apply=false"]

not work?

I don't use the chezmoi update command (mostly because I am pushing from one machine to github; I don't currently have multiple machines that I worry about), so I'm not sure if it would work or not.

I just tried it and, unfortunately, it does not work.

But it looks like @twpayne already pushed a PR that adds this function!