Shell Integration should pass the command line to the channel

[bcotton]

Feature
I would like to have the shell integration have access to the command line that was started when the channel is invoked with C-t

Examples
My use case is as follows:

For kubernetes you run `kubectl get [thing]', which lists all of the "things".

On the right-hand side I want to call kubectl get <thing> {0} ... where {0} is the name return from the first get, like this:

kubectl get pods | tv --preview 'kubectl get pods {0} -oyaml | bat -l yaml --color=always'

List of pods on the left, full yaml of pod on the right.

For a shell integration with a channel, the channel needs to know what the initial command line is, in this case kubectl get pods so it can pass the "things", pods in this case` to the preview command.

[lalvarezt]

you could add a new channel, see docker example

television/cable/unix-channels.toml

Lines 59 to 63 in cc27b5e

	# Docker
	[[cable_channel]]
	name = "docker-images"
	source_command = "docker image list --format \"{{.ID}}\""
	preview_command = "docker image inspect {0} | jq -C"

then bind in your shell a custom keybinding that calls that particular channel. This is easier to do than to modify the --autocomplete-prompt function

If you apply this PR (#494) you can do the following (just adapt to kubectl)

function tv_docker_autocomplete
    set -l commandline (__tv_parse_commandline)
    set -lx dir $commandline[1]
    set -l tv_query $commandline[2]

    if set -l result (tv docker-images --input $tv_query)
        # Remove last token from commandline.
        commandline -t ''

        for i in $result
            commandline -it -- (string escape -- $i)' '
        end
    end

    commandline -f repaint
end
bind ctrl-f5 tv_docker_autocomplete

You can then do

kubectl <ctrl-t>    # select from the list and do your thing

Note: this is for the fish shell but could give some idea in case you are using bash or zsh

[lalvarezt]

you could also tweak the --autocomplete-prompt using the config file as stated here

television/.config/config.toml

Lines 117 to 136 in be8008e

	[shell_integration.channel_triggers]
	# Add your channel triggers here. Each key is a channel that will be triggered
	# by the corresponding commands.
	# Example: say you want the following commands to trigger the following channels
	# when pressing <CTRL-T>:
	# `git checkout` should trigger the `git-branches` channel
	# `ls` should trigger the `dirs` channel
	# `cat` and `cp` should trigger the `files` channel
	#
	# You would add the following to your configuration file:
	# ```
	# [shell_integration.channel_triggers]
	# "git-branches" = ["git checkout"]
	# "dirs" = ["ls"]
	# "files" = ["cat", "cp"]
	# ```
	"alias" = ["alias", "unalias"]
	"env" = ["export", "unset"]
	"dirs" = ["cd", "ls", "rmdir"]
	"files" = [

[lalvarezt]

@bcotton does this solve your issue?

[alexpasmantier]

See solution above.

Closing this.