dgraph license reference not recognized

[armijnhemel]

Description

Dgraph license references in the Dgraph Git repository are not scanned correctly. When scanning for example https://github.com/dgraph-io/dgraph/blob/main/dgraph/cmd/root_ee.go I get the following result:

      "path": "root_ee.go",
      "type": "file",
      "detected_license_expression": "polyform-free-trial-1.0.0",
      "detected_license_expression_spdx": "LicenseRef-scancode-polyform-free-trial-1.0.0",
      "license_detections": [
        {
          "license_expression": "polyform-free-trial-1.0.0",
          "license_expression_spdx": "LicenseRef-scancode-polyform-free-trial-1.0.0",
          "matches": [
            {
              "license_expression": "polyform-free-trial-1.0.0",
              "license_expression_spdx": "LicenseRef-scancode-polyform-free-trial-1.0.0",
              "from_file": "root_ee.go",
              "start_line": 7,
              "end_line": 11,
              "matcher": "3-seq",
              "score": 61.22,
              "matched_length": 30,
              "match_coverage": 61.22,
              "rule_relevance": 100,
              "rule_identifier": "polyform-free-trial-1.0.0_1.RULE",
              "rule_url": "https://github.com/nexB/scancode-toolkit/tree/develop/src/licensedcode/data/rules/polyform-free-trial-1.0.0_1.RULE"
            }
          ],
          "identifier": "polyform_free_trial_1_0_0-5578fe3c-6f9d-f096-20fc-09d81a96b74a"
        }
      ],
      "license_clues": [],
      "percentage_of_license_text": 28.04,
      "scan_errors": []

How To Reproduce

Tell us how to reproduce the issue.

$ ./scancode -l --json-pp=/tmp/dgraph.json /tmp/root_ee.go

System configuration

For bug reports, it really helps us to know:

• What OS are you running on? Linux
• What version of scancode-toolkit was used to generate the scan file? v32.3.0-14-g65e1c2db47
• What installation method was used to install/run scancode? source