RGhost is a document creation and conversion API. It uses the Ghostscript framework for the format conversion, utilizes EPS templates and is optimized to work with larger documents. Support(PDF,PS,GIF,TIF,PNG,JPG,etc)
Ruby to PS character conversion proxy. Necessary when the source code isn't in the same encoding as the document. Params is a block that returns a String. The default setting is nil.
Instead, the default setting depends on the used Ruby version and converts UTF-8 into ISO-8859-1.
The documentation of charset_convert says:
Instead, the default setting depends on the used Ruby version and converts UTF-8 into ISO-8859-1.