Add HTML email generator

prepare_email.py

@@ -0,0 +1,37 @@
+#!python
+# Copies the given input file, removing the parts specific to the Web,
+# so it can be converted to an email
+import subprocess
+
+import argparse
+import re
+from pathlib import Path
+
+MAIL_GENERATOR = "/opt/homebrew/bin/mdtosendy"
+
+
+parser = argparse.ArgumentParser()
+parser.add_argument("source")
+args = parser.parse_args()
+
+root = Path.cwd()
+print(f"Root: {root}")
+
+source = Path(root / args.source)
+
+if not source.is_file():
+    print(f"ERROR: file not found {source}")
+    exit(1)
+
+print(f"Processing {source}")
+
+input = source.read_text()
+
+regex = re.compile(r"Title.*svg\">", re.S)
+output = re.sub(regex, "", input)
+destination = Path.cwd() / "mail" / source.name
+
+print(f"Writing {destination}")
+destination.write_text(output)
+
+subprocess.run([MAIL_GENERATOR, "--preview", str(destination)])