add ymmw, toggle_displays.clj

ymmw

@@ -0,0 +1,34 @@
+#!/usr/bin/env python3
+"""Re-format YAML passed on stdin or read from any arguments."""
+
+import yaml
+import sys
+
+
+# https://stackoverflow.com/a/72265455
+def str_presenter(dumper, data):
+    if len(data.splitlines()) > 1 or "\n" in data:
+        text_list = [line.rstrip() for line in data.splitlines()]
+        fixed_data = "\n".join(text_list)
+        return dumper.represent_scalar("tag:yaml.org,2002:str", fixed_data, style="|")
+    return dumper.represent_scalar("tag:yaml.org,2002:str", data)
+
+
+yaml.add_representer(str, str_presenter)
+
+
+def ymmw(files):
+   if not files:
+      files=[sys.stdin]
+
+   for f in files:
+     try:
+        print(f)
+        print(yaml.dump(yaml.load(open(f) if not f == sys.stdin else f, Loader=yaml.FullLoader)), end='')
+     except OSError as ex:
+        sys.exit(f"""ERROR: Couldn't read input from stdin, or couldn't write output to stdout. Exiting.
+
+{ex}""")
+
+if __name__ == '__main__':
+   ymmw(sys.argv[1:])