I'm in the process of moving a lot of my editing to emacs (currently 23.3.1).
I'm looking for (two separate) major modes for emacs that will handle Rexx and z/Assembler, preferably including syntax highlighting, code and structure completion, and code formatting.
Any suggestions, please?
An obsolete mode for Rexx can be found at Emacsattic. This was last updated towards the end of 2011.
There is an even older (2007) mode called Z390-mode that can be downloaded from Sourceforge, that was written for s370-Z900.