From 24f95a98b21cf8d48a116091e89e9cefa83b85fa Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Vin=C3=ADcius=20Ferr=C3=A3o?=
 <2031761+viniciusferrao@users.noreply.github.com>
Date: Wed, 22 Jul 2026 19:20:49 -0300
Subject: [PATCH] fix(nodech): handle comma-delimited values in the ,= operator

nodech's ,= operator appended the whole right-hand side as one value, so
"nodech n1 groups,=a,b" added the literal "a,b" and its duplicate check only
compared against that combined string. Split the value on commas and add each
piece individually, skipping any already present.

Recovered from the unmerged lenovobuild branch (original 086b0c0d).

Co-authored-by: Jarrod Johnson <10814490+jjohnson42@users.noreply.github.com>
(cherry picked from commit 6e33661fc05788cb286c507a1fc0c98abb0e0c89)
---
 xCAT-server/lib/xcat/plugins/tabutils.pm | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/xCAT-server/lib/xcat/plugins/tabutils.pm b/xCAT-server/lib/xcat/plugins/tabutils.pm
index 2cfa931c8..6254c0513 100644
--- a/xCAT-server/lib/xcat/plugins/tabutils.pm
+++ b/xCAT-server/lib/xcat/plugins/tabutils.pm
@@ -1742,11 +1742,14 @@ sub nodech
                                     if ($cent) { $curval = $cent->{$key}; }
                                 }
                                 if ($curval) {
-                                    my @vals = split(/,/, $curval);
-                                    unless (grep /^$val$/, @vals) {
-                                        unshift @vals, $val;
-                                        my $newval = join(',', @vals);
-                                        $uhsh{$key} = $newval;
+                                    foreach my $subval (split /,/, $val) {
+                                        my @vals = split(/,/, $curval);
+                                        unless (grep /^$subval$/, @vals) {
+                                            unshift @vals, $subval;
+                                            my $newval = join(',', @vals);
+                                            $uhsh{$key} = $newval;
+                                            $curval = $newval;
+                                        }
                                     }
                                 } else {
                                     $uhsh{$key} = $val;