background_task: Fix quoted commands and fix deprecation of implicit …

…spreading and clarify docs (nushell#752)

modules/background_task/task.nu

@@ -47,21 +47,24 @@ export def spawn [
  $args = ($args | prepend ["--label" $label])
  }
 
- let source_code = (
+ let source_path = mktemp --tmpdir --suffix "-nu-task"
+
+ (
  view source $command
  | str trim --left --char "{"
  | str trim --right --char "}"
  )
+ | save --force $source_path
 
- (pueue add --print-task-id $args $"nu --config '($nu.config-path)' --env-config '($nu.env-path)' --commands '($source_code)'")
+ (pueue add --print-task-id ...$args $"nu --config '($nu.config-path)' --env-config '($nu.env-path)' ($source_path)")
 }
 
 # Remove tasks from the queue.
 # Running or paused tasks need to be killed first.
 export def remove [
  ...ids: int # IDs of the tasks to remove from the status list.
 ] {
- pueue remove $ids
+ pueue remove ...$ids
 }
 
 # Switches the queue position of two tasks.
@@ -80,7 +83,7 @@ export def switch [
 export def stash [
  ...ids: int # IDs of the tasks to stash.
 ] {
- pueue stash $ids
+ pueue stash ...$ids
 }
 
 # Queue stashed tasks for execution.
@@ -94,7 +97,7 @@ export def queue [
  []
  }
 
- pueue enqueue $args $ids
+ pueue enqueue ...$args ...$ids
 }
 
 # Resume operation of specific tasks or groups of tasks.
@@ -115,7 +118,7 @@ export def start [
  $args = ($args | prepend "--all")
  }
 
- pueue start $args
+ pueue start ...$args
 }
 
 # Restart failed or successful task(s).
@@ -167,7 +170,7 @@ export def restart [
  $args = ($args | prepend "--edit-label")
  }
 
- pueue restart $args $ids
+ pueue restart ...$args ...$ids
 }
 
 # Either pause a running tasks or a specific groups of tasks.
@@ -193,7 +196,7 @@ export def pause [
  $args = ($args | prepend "--wait")
  }
 
- pueue pause $args $ids
+ pueue pause ...$args ...$ids
 }
 
 # Kill specific running tasks or whole task groups.
@@ -217,7 +220,7 @@ export def kill [
  $args = ($args | prepend ["--signal" $signal])
  }
 
- pueue kill $args $ids
+ pueue kill ...$args ...$ids
 }
 
 # Send something to a task. Useful for sending confirmations such as "y\n".
@@ -251,7 +254,7 @@ export def edit [
  $args = ($args | prepend "--label")
  }
 
- pueue edit $args $id
+ pueue edit ...$args $id
 }
 
 # Use this to add or remove groups.
@@ -272,7 +275,7 @@ export def "group add" [
  []
  }
 
- pueue group add $args $name
+ pueue group add ...$args $name
 }
 
 # Remove a group with a name.
@@ -302,7 +305,7 @@ export def status [
  }
 }
 
-# Display the log output of finished tasks.
+# Display the output of tasks.
 #
 # Only the last few lines will be shown by default for multiple tasks.
 # If you want to follow the output, use `--tail/-t`.
@@ -336,15 +339,15 @@ export def log [
  []
  }
 
- pueue follow $ids
+ pueue follow ...$ids
  } else {
  let args = if $last != null {
  ["--lines" $last]
  } else {
  []
  }
 
- process_raw (pueue log --full --json $args $ids)
+ process_raw (pueue log --full --json ...$args ...$ids)
  | first
  }
  } else {
@@ -359,7 +362,7 @@ export def log [
  []
  }
 
- process_raw (pueue log --full --json $args $ids)
+ process_raw (pueue log --full --json ...$args ...$ids)
  }
 }
 
@@ -388,7 +391,7 @@ export def wait [
  $args = ($args | prepend ["--status" $status])
  }
 
- pueue wait $args $ids
+ pueue wait ...$args ...$ids
 }
 
 # Remove tasks from the status list.
@@ -405,7 +408,7 @@ export def clean [
  $args = ($args | prepend ["--group" $group])
  }
 
- pueue clean $args
+ pueue clean ...$args
 }
 
 # Shutdown pueue and thus this module.
@@ -427,5 +430,5 @@ export def set-parallel-limit [
  []
  }
 
- pueue parallel $args $max
+ pueue parallel ...$args $max
 }