Merge pull request #2819 from benjamintanweihao/patch-3

Fix missing concatenation operator.

Signed-off-by: José Valim <jose.valim@plataformatec.com.br>

Author: josevalim

lib/mix/lib/mix/tasks/deps.clean.ex

@@ -39,8 +39,8 @@ defmodule Mix.Tasks.Deps.Clean do
         do_clean(apps, build, deps)
       true ->
         Mix.raise "mix deps.clean expects dependencies as arguments or " <>
-                  "a flag indicating which dependencies to clean " <>
-                  "The --all option will clean all dependencies while"
+                  "a flag indicating which dependencies to clean. " <>
+                  "The --all option will clean all dependencies while " <>
                   "the --unused option cleans unused dependencies."
     end
 

lib/mix/test/mix/tasks/deps_test.exs

@@ -552,8 +552,8 @@ defmodule Mix.Tasks.DepsTest do
       File.mkdir_p!("_build/test/lib/git_repo")
 
       message = "mix deps.clean expects dependencies as arguments or " <>
-                "a flag indicating which dependencies to clean " <>
-                "The --all option will clean all dependencies while"
+                "a flag indicating which dependencies to clean. " <>
+                "The --all option will clean all dependencies while " <>
                 "the --unused option cleans unused dependencies."
 
       assert_raise Mix.Error, message, fn ->