I am getting window title in Xlib using "WM_NAME" window property, and I have discovered that there is different string types that the property returns. For string type there is "UTF8_STRING" atom, XA_STRING (ISO-8859-1), and also some "COMPOUND_TEXT" atom. While "UTF8_STRING" and XA_STRING seems straightforward to use, I have found "COMPOUND_TEXT" a bit complicated to use.

Here is the only information I found online: https://www.x.org/releases/X11R7.7-RC1/doc/xorg-docs/ctext/ctext.html

The end goal is to parse compound text or at least convert it to a valid UTF-8 string.