First off, thanks for your kind words :)

Sounds like we want a showOutput boolean key there so that the output of the command appears in a popup

I'm chucking the good-first-issue label on this because I reckon this will be pretty straightforward to implement. Relevant places that need updating:
handleCustomCommandKeybinding function in pkg/gui/custom_commands.go
CustomCommand struct in pkg/config/user_config.go

I would like to fix this. I can understand that we can add the showOutput in the CustomCommand to check whether we need to show output in the handleCustomCommandKeybinding. But I am quite newbie so I don't know show to popup the output of the command. Could you please give me the reference of the popup @jesseduffield
I am willing to contribute to the community.

Thanks

@dutroctu you would want to go into handleCustomCommandKeybinding in pkg/gui/custom_commands.go and do something like the following:

		f := func() error {
			cmdStr, err := gui.resolveTemplate(customCommand.Command, promptResponses)
			if err != nil {
				return gui.surfaceError(err)
			}

			if customCommand.Subprocess {
				return gui.runSubprocessWithSuspenseAndRefresh(gui.OSCommand.PrepareShellSubProcess(cmdStr))
			}

			loadingText := customCommand.LoadingText
			if loadingText == "" {
				loadingText = gui.Tr.LcRunningCustomCommandStatus
			}
			return gui.WithWaitingStatus(loadingText, func() error {
				output, err := gui.OSCommand.
					WithSpan(gui.Tr.Spans.CustomCommand).
					RunShellCommandWithOutput(cmdStr)
				if err != nil {
					return gui.surfaceError(err)
				}

				if err := gui.refreshSidePanels(refreshOptions{}); err != nil {
					return err
				}

				if customCommand.ShowOutput {
					return gui.ask(askOpts{
						title:  customCommand.Command,
						prompt: output,
					})
				}

				return nil
			})
		}

The RunShellCommandWithOutput function does not yet exist but you can go to RunShellCommand and see that it actually drops the output of the command that's run. So you can create a RunShellCommandWithOutput which does not drop that output, and then have RunShellCommand call RunShellCommandWithOutput and just return the error.

Lemme know if you need any help