From e3674de08ded02111ff0b1deb7b64ed1271bdc9a Mon Sep 17 00:00:00 2001
From: Flavien Solt <flavien@nus.edu.sg>
Date: Tue, 21 Apr 2026 11:08:51 +0800
Subject: [PATCH] Accept valueless Gerber attributes

---
 src/gerbonara/rs274x.py |  2 +-
 tests/test_rs274x.py    | 14 ++++++++++++++
 2 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/src/gerbonara/rs274x.py b/src/gerbonara/rs274x.py
index c0c954e..b6a9c30 100644
--- a/src/gerbonara/rs274x.py
+++ b/src/gerbonara/rs274x.py
@@ -1081,7 +1081,7 @@ class GerberParser:
 
         else:
             target = {'TF': self.file_attrs, 'TO': self.graphics_state.object_attrs, 'TA': self.aperture_attrs}[match['type']]
-            target[match['name']] = tuple(match['value'].split(','))
+            target[match['name']] = tuple(match['value'].split(',')) if match['value'] else ()
 
             if 'EAGLE' in self.file_attrs.get('.GenerationSoftware', []) or match['eagle_garbage']:
                 self.generator_hints.append('eagle')
diff --git a/tests/test_rs274x.py b/tests/test_rs274x.py
index 0ee5ab3..07ca2e3 100644
--- a/tests/test_rs274x.py
+++ b/tests/test_rs274x.py
@@ -29,6 +29,20 @@ from gerbonara.cam import FileSettings
 from .image_support import *
 from .utils import *
 
+def test_attribute_without_value_is_stored_as_empty_tuple():
+    data = '\n'.join([
+        '%FSLAX24Y24*%',
+        '%MOIN*%',
+        '%TF.FlagLike*%',
+        '%ADD10C,0.0100*%',
+        'D10*',
+        'X0Y0D03*',
+        'M02*',
+    ])
+
+    parsed = GerberFile.from_string(data)
+    assert parsed.file_attrs['.FlagLike'] == ()
+
 # Note: We have a testcase for gitlab issues #10/#11 in therm_1.gbr, but we can't test for that at this time because
 # gerbv chokes on that gerber file and does'nt produce any output.
 REFERENCE_FILES = [ l.strip() for l in '''