Thanks for the awesome CLI!

Describe the bug

The behaviour of the --name (-n) flag does not match the documented behaviour.

  # Download specific artifacts across all runs in a repository
  $ gh run download -n <name>

I would like to download all of the non-expired artifacts matching <name> from all workflows runs.

Expected vs actual behavior

$ gh run download -n test-reports
$ ls
test-run-25-0.log  test-run-25-1.log  test-run-25-2.log  test-run-25-3.log

The result was 4 artifacts from workflow run with id 25. There are 22 other workflow runs with those artifacts not expired.

$curl -H "X-GitHub-Api-Version: 2022-11-28" https://api.github.com/repos/<owner>/<repo>/actions/artifacts?name=test-reports | \
  jq '.artifacts[] | if .expired == false then .name else empty end' | uniq --count
    23 "test-reports"

Analysis

The output above shows that every workflow run has the same name for the artifact. I think that's expected.

The downloaded.Contains line here causes the artifacts from all the previous workflows runs to be skipped. This prevents the download of artifacts from all previous workflow runs.

I believe this line comes from the original PR (c54e3c9#diff-e978a1b24757569c82622da106c0d0bee28cd927e627108f3c60a872f0aa6ec6R99-R101), before the --name flag was added.

I guess this condition is to avoid downloading the same artifact twice, if that is possible when glob patterns are used. Should it be

diff --git a/pkg/cmd/run/download/download.go b/pkg/cmd/run/download/download.go
index 25eec5d62..eaf2eae7c 100644
--- a/pkg/cmd/run/download/download.go
+++ b/pkg/cmd/run/download/download.go
@@ -151,7 +151,7 @@ func runDownload(opts *DownloadOptions) error {
 		if a.Expired {
 			continue
 		}
-		if downloaded.Contains(a.Name) {
+		if downloaded.Contains(a.DownloadURL) {
 			continue
 		}
 		if len(wantNames) > 0 || len(wantPatterns) > 0 {

or

diff --git a/pkg/cmd/run/download/download.go b/pkg/cmd/run/download/download.go
index 25eec5d62..cdc8f6b83 100644
--- a/pkg/cmd/run/download/download.go
+++ b/pkg/cmd/run/download/download.go
@@ -151,7 +151,7 @@ func runDownload(opts *DownloadOptions) error {
 		if a.Expired {
 			continue
 		}
-		if downloaded.Contains(a.Name) {
+		if len(opts.Names) == 0 && downloaded.Contains(a.Name) {
 			continue
 		}
 		if len(wantNames) > 0 || len(wantPatterns) > 0 {

I think either of those would fix the bug and provide the documented behaviour. A new test case in Test_runDownload should be easy to add, if you would accept a PR for one of those fixes.