github: add option to use release name instead of tag

fixes #278

docs/usage.rst

@@ -412,12 +412,19 @@ use_latest_release
   small ones like `nvchecker's <https://github.com/lilydjwg/nvchecker/releases>`_
   are only git tags that should use ``use_max_tag`` below.
 
-  Will return the release name instead of date.
+  Will return the release's tag name instead of date. (For historical reasons
+  it doesn't return the release name. See below to change.)
+
+use_release_name
+  When ``use_latest_release`` is ``true``, setting this to ``true`` will cause
+  nvchecker to return the release name instead of the tag name.
 
 include_prereleases
   When ``use_latest_release`` is ``true``, set this to ``true`` to take prereleases into
   account.
 
+  This returns the release names (not the tag names).
+
   This requires a token because it's using the v4 GraphQL API.
 
 use_latest_tag

nvchecker_source/github.py

@@ -219,8 +219,15 @@ async def get_version_real(
   if use_latest_release:
     if 'tag_name' not in data:
       raise GetVersionError('No release found in upstream repository.')
+
+    use_release_name = conf.get('use_release_name', False)
+    if use_release_name:
+      version = data['name']
+    else:
+      version = data['tag_name']
+
     return RichResult(
-      version = data['tag_name'],
+      version = version,
       gitref = f"refs/tags/{data['tag_name']}",
       url = data['html_url'],
     )

tests/test_github.py

@@ -36,6 +36,22 @@ async def test_github_latest_release_include_prereleases(get_version):
         "include_prereleases": True,
     }) == "v0.0.1-pre"
 
+async def test_github_latest_release_with_release_name(get_version):
+    version = await get_version("example", {
+        "source": "github",
+        "github": "mamba-org/mamba",
+        "use_latest_release": True,
+    })
+    assert version.startswith('20') # tag name
+
+    version = await get_version("example", {
+        "source": "github",
+        "github": "mamba-org/mamba",
+        "use_latest_release": True,
+        "use_release_name": True,
+    })
+    assert not version.startswith('20') # release name
+
 async def test_github_max_tag(get_version):
     assert await get_version("example", {
         "source": "github",