From ce44214c045bc223217f4e969a2b2d3f249b7c21 Mon Sep 17 00:00:00 2001
From: Ethan Lee <ethanalee@google.com>
Date: Tue, 3 Feb 2026 18:25:04 +0000
Subject: internal/licenses: add COPYING.LESSER to recognized license filenames

Fixes golang/go#77324

Change-Id: I1852deb53b128b0f7f1ebb235287bfced00c2c3c
Reviewed-on: https://go-review.googlesource.com/c/pkgsite/+/741620
Auto-Submit: Ethan Lee <ethanalee@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Sean Liao <sean@liao.dev>
Reviewed-by: Junyang Shao <shaojunyang@google.com>
kokoro-CI: kokoro <noreply+kokoro@google.com>
---
 internal/licenses/licenses.go                      |   4 ++++
 internal/licenses/licenses_test.go                 |  10 ++++++----
 .../testcases/license-policy-540x1080.want.png     | Bin 313426 -> 321065 bytes
 .../testdata/testcases/license-policy.want.png     | Bin 339881 -> 347366 bytes
 4 files changed, 10 insertions(+), 4 deletions(-)

diff --git a/internal/licenses/licenses.go b/internal/licenses/licenses.go
index 2a685967..07107edc 100644
--- a/internal/licenses/licenses.go
+++ b/internal/licenses/licenses.go
@@ -88,6 +88,10 @@ var (
 		"COPYING.md",
 		"COPYING.markdown",
 		"COPYING.txt",
+		"COPYING.LESSER",
+		"COPYING.LESSER.md",
+		"COPYING.LESSER.markdown",
+		"COPYING.LESSER.txt",
 		"LICENCE",
 		"LICENCE.md",
 		"LICENCE.markdown",
diff --git a/internal/licenses/licenses_test.go b/internal/licenses/licenses_test.go
index 9d8e6627..80d79b13 100644
--- a/internal/licenses/licenses_test.go
+++ b/internal/licenses/licenses_test.go
@@ -341,12 +341,14 @@ func TestPaths(t *testing.T) {
 		"LICENCE":            "",
 		"License":            "",
 		"COPYING":            "",
+		"COPYING.LESSER":     "",
 		"liCeNse":            "",
 		"foo/LICENSE":        "",
 		"foo/LICENSE.md":     "",
 		"foo/LICENCE":        "",
 		"foo/License":        "",
 		"foo/COPYING":        "",
+		"foo/COPYING.LESSER": "",
 		"foo/license":        "",
 		"vendor/pkg/LICENSE": "", // vendored files ignored
 		"pkg/vendor/LICENSE": "", // not a vendored file, but a package named "vendor"
@@ -357,22 +359,22 @@ func TestPaths(t *testing.T) {
 	}{
 		{
 			RootFiles,
-			[]string{"LICENSE", "LICENCE", "License", "COPYING", "LICENSE.md",
+			[]string{"LICENSE", "LICENCE", "License", "COPYING", "COPYING.LESSER", "LICENSE.md",
 				"liCeNse"},
 		},
 		{
 			NonRootFiles,
 			[]string{
 				"foo/LICENSE", "foo/LICENSE.md", "foo/LICENCE", "foo/License",
-				"foo/COPYING", "pkg/vendor/LICENSE", "foo/license",
+				"foo/COPYING", "foo/COPYING.LESSER", "pkg/vendor/LICENSE", "foo/license",
 			},
 		},
 		{
 			AllFiles,
 			[]string{
-				"LICENSE", "LICENCE", "License", "COPYING", "LICENSE.md",
+				"LICENSE", "LICENCE", "License", "COPYING", "COPYING.LESSER", "LICENSE.md",
 				"liCeNse", "foo/LICENSE", "foo/LICENSE.md", "foo/LICENCE", "foo/License",
-				"foo/license", "foo/COPYING", "pkg/vendor/LICENSE",
+				"foo/license", "foo/COPYING", "foo/COPYING.LESSER", "pkg/vendor/LICENSE",
 			},
 		},
 	} {
diff --git a/tests/screentest/testdata/testcases/license-policy-540x1080.want.png b/tests/screentest/testdata/testcases/license-policy-540x1080.want.png
index 1b0c1b67..77982e54 100644
Binary files a/tests/screentest/testdata/testcases/license-policy-540x1080.want.png and b/tests/screentest/testdata/testcases/license-policy-540x1080.want.png differ
diff --git a/tests/screentest/testdata/testcases/license-policy.want.png b/tests/screentest/testdata/testcases/license-policy.want.png
index 49ac6346..1a9ac8c2 100644
Binary files a/tests/screentest/testdata/testcases/license-policy.want.png and b/tests/screentest/testdata/testcases/license-policy.want.png differ
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