From bb302279ea5c8d3a2484f37e8af66a6f64f3102f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?St=C3=A9phane=20Adjemian=20=28Odysseus=29?=
 <stepan@adjemian.eu>
Date: Wed, 29 Jan 2020 09:25:23 +0100
Subject: [PATCH] Do not add tag for block name if rootfolder is empty.

---
 matlab/aggregate.m | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/matlab/aggregate.m b/matlab/aggregate.m
index 79faa5220..1ff7859e9 100644
--- a/matlab/aggregate.m
+++ b/matlab/aggregate.m
@@ -71,7 +71,9 @@ for i=1:length(varargin)
                 error('An equation tag must be followed by an equation.')
             end
             % Add equation tag with block name.
-            model{j} = strcat('[block=''',  getblockname(varargin{i}, rootfolder), ''',', model{j}(2:end));
+            if ~isempty(rootfolder)
+                model{j} = strcat('[block=''',  getblockname(varargin{i}, rootfolder), ''',', model{j}(2:end));
+            end
             % Ensure that the equation tag name matches the LHS variable.
             eqtagname = regexp(model{j}, 'name=''(\w*)''', 'match');
             [lhs, ~] = getequation(model{j+1});