mickroll commented on a change in pull request #12:
URL: https://github.com/apache/maven-deploy-plugin/pull/12#discussion_r541552391



##########
File path: src/main/java/org/apache/maven/plugins/deploy/DeployMojo.java
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@@ -248,19 +249,40 @@ else if ( !ArtifactUtils.isSnapshot( project.getVersion() 
) && altReleaseDeploym
         {
             getLog().info( "Using alternate deployment repository " + 
altDeploymentRepo );
 
-            Matcher matcher = ALT_REPO_SYNTAX_PATTERN.matcher( 
altDeploymentRepo );
+            Matcher matcher = ALT_LEGACY_REPO_SYNTAX_PATTERN.matcher( 
altDeploymentRepo );
 
-            if ( !matcher.matches() )
+            if ( matcher.matches() )
             {
-                throw new MojoFailureException( altDeploymentRepo, "Invalid 
syntax for repository.",
-                                                "Invalid syntax for 
alternative repository. Use \"id::url\"." );
+                getLog().warn( "Legacy form of alternate deployment parameter 
used, update parameter to match plugin version." );

Review comment:
       This message hides a lot of information that was gathered before. At 
this point, the plugin knows that `id::layout::url` was used (but expects 
`id::url`, of course). The message should reflect that, not just by saying `you 
used the old notation, use the new one. RTFM`, but more like `you used the 2.x 
notation id::layout::url, 3.x expects id::url`.
   This would give not just a hint to whats wrong, but provide a solution... To 
me, this is the difference of a good plugin to a great one :sunglasses:
   With this, it would be totally fine (and expected) to fail with the message, 
not continuing the build 'magically' if the layout is `default`.




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