Fix false error on nested closure in config process directive (#6203)

Signed-off-by: Ben Sherman <bentshermann@gmail.com>

Author: bentsherman

modules/nf-lang/src/main/java/nextflow/config/control/VariableScopeVisitor.java

@@ -41,6 +41,7 @@
 import org.codehaus.groovy.ast.expr.ConstantExpression;
 import org.codehaus.groovy.ast.expr.DeclarationExpression;
 import org.codehaus.groovy.ast.expr.Expression;
+import org.codehaus.groovy.ast.expr.MapEntryExpression;
 import org.codehaus.groovy.ast.expr.MethodCallExpression;
 import org.codehaus.groovy.ast.expr.TupleExpression;
 import org.codehaus.groovy.ast.expr.VariableExpression;
@@ -146,6 +147,17 @@ private static boolean isWorkflowHandler(List<String> scopes, ConfigAssignNode n
             && List.of("onComplete", "onError").contains(option);
     }
 
+    @Override
+    public void visitMapEntryExpression(MapEntryExpression node) {
+        node.getKeyExpression().visit(this);
+
+        var ic = inClosure;
+        if( inProcess && node.getValueExpression() instanceof ClosureExpression )
+            inClosure = true;
+        node.getValueExpression().visit(this);
+        inClosure = ic;
+    }
+
     @Override
     public void visitConfigBlock(ConfigBlockNode node) {
         var newScope = node.kind == null;

modules/nf-lang/src/test/groovy/nextflow/config/control/ConfigResolveTest.groovy

@@ -163,6 +163,16 @@ class ConfigResolveTest extends Specification {
             '''\
             process {
                 ext.prefix = { "${meta.id}.filter1" }
+
+                publishDir = [
+                    path: { "${params.outdir}/${task.process.tokenize(':')[-1].tokenize('_')[0].toLowerCase()}" },
+                    mode: params.publish_dir_mode,
+                ]
+
+                publishDir = [
+                    path: { "${params.outdir}/imputation/${meta.tools}/samples/" },
+                    mode: params.publish_dir_mode,
+                ]
             }
             '''
         )