ci: show recent changes in nightly release (#5553)

.CI/format-recent-changes.py

@@ -0,0 +1,61 @@
+from datetime import datetime, timezone
+import os
+import subprocess
+import re
+
+LINE_REGEX = re.compile(
+    r"""(?x)
+^(?P<commit>[A-Fa-f0-9]+)\s+
+\(
+    <(?P<email>[^>]+)>\s+
+    (?P<date>[^\s]+\s[^\s]+\s[^\s]+)\s+
+    (?P<line>\d+)
+\)\s
+(?P<content>.*)$
+"""
+)
+VERSION_REGEX = re.compile(r"^#+\s*v?\d")
+
+# contains lines in the form of
+# {commit-sha} (<{email}>\s+{date}\s+{line-no}) {line}
+p = subprocess.run(
+    ["git", "blame", "-e", "--date=iso", "../CHANGELOG.md"],
+    cwd=os.path.dirname(os.path.realpath(__file__)),
+    text=True,
+    check=True,
+    capture_output=True,
+)
+
+unreleased_lines: list[tuple[datetime, str]] = []
+for line in p.stdout.splitlines():
+    if not line:
+        continue
+    m = LINE_REGEX.match(line)
+    assert m, f"Failed to match '{line}'"
+    content = m.group("content")
+
+    if not content:
+        continue
+    if content.startswith("#"):
+        if VERSION_REGEX.match(content):
+            break
+        continue  # ignore lines with '#'
+
+    d = datetime.fromisoformat(m.group("date"))
+    d = d.astimezone(tz=timezone.utc)
+    content = content.replace("- ", f"- [{d.strftime('%Y-%m-%d')}] ", 1)
+    unreleased_lines.append((d, content))
+
+unreleased_lines.sort(key=lambda it: it[0], reverse=True)
+
+if len(unreleased_lines) == 0:
+    print("No changes since last release.")
+
+for _, line in unreleased_lines[:5]:
+    print(line)
+
+if len(unreleased_lines) > 5:
+    print("<details><summary>More Changes</summary>\n")
+    for _, line in unreleased_lines[5:]:
+        print(line)
+    print("</details>")