Add a guard to the unsubmit command.

CHANGELOG.md

@@ -6,6 +6,7 @@ The exercism CLI follows [semantic versioning](http://semver.org/).
 
 ## Next Release
 
+* [#200](https://github.com/exercism/cli/pull/200): Add guard to unsubmit command - [@kytrinyx](https://github.com/kytrinyx)
 * **Your contribution here**
 
 ## v2.2.0 (2015-06-27)

cmd/unsubmit.go

@@ -9,10 +9,12 @@ import (
 	"github.com/exercism/cli/config"
 )
 
-// Unsubmit deletes an iteration from the api.
-// If no iteration is specified, the most recent iteration
-// is deleted.
+// Unsubmit deletes the most recent submission from the API.
 func Unsubmit(ctx *cli.Context) {
+	if len(ctx.Args()) > 0 {
+		log.Fatal("\nThe unsubmit command does not take any arguments, it deletes the most recent submission.\n\nTo delete a different submission, you'll need to do it from the website.")
+	}
+
 	c, err := config.New(ctx.GlobalString("config"))
 	if err != nil {
 		log.Fatal(err)

exercism/main.go

@@ -25,7 +25,7 @@ const (
 	descRestore   = "Restores completed and current problems on from exercism.io, along with your most recent iteration for each."
 	descSubmit    = "Submits a new iteration to a problem on exercism.io."
 	descSkip      = "Skips a problem given a language and slug."
-	descUnsubmit  = "Deletes the most recently submitted iteration."
+	descUnsubmit  = "Deletes the most recently submitted solution."
 	descUpgrade   = "Upgrades the CLI to the latest released version."
 	descTracks    = "List the available language tracks"
 	descOpen      = "Opens the current submission of the specified exercise"