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- See the file VMSINSTALL for VMS installation information.
-
- * Deficiencies of VMS GNU Emacs
-
- All GNU Emacs features which on Unix work by running a Unix utility in a
- subprocess currently do not work on VMS.
-
- These include Dired, listing a file directory, reading and sending mail,
- reading and posting netnews, spelling correction, displaying the time and
- load in the mode line, queueing output for printing, and the `sort-columns'
- command. Naturally, the commands to view Unix manual pages and execute Unix
- shell commands also do not work.
-
- It is not possible to fix these problems in a general way on VMS because
- they involve interfaces to parts of the operating system which work very
- differently on VMS. Each feature must be reimplemented individually.
-
- I hope that someone will send me an implementation for directory listing on
- VMS. This should not be very hard to do. Most of the code you need is
- already provided in [.src]dired.c.
-
- The normal commands for running an inferior shell or lisp with I/O through
- an Emacs buffer do not work on VMS, but you can instead create a DCL
- subprocess which does I/O through an Emacs buffer and get a similar effect.
- See the file [.lisp]vms-patch.el.
-
- * Specifying terminal type.
-
- To specify a terminal type for Emacs that is not known to VMS, define the
- logical name EMACS_TERM with the terminal type as value. Terminal types are
- looked up in the termcap data base, which is found as the file
- `[etc]termcap.dat' in the Emacs distribution.
-
- * Specifying file names.
-
- GNU Emacs accepts both Unix and VMS file name syntax. Most Lisp code that
- runs in Emacs uses Unix syntax so it can run everywhere. Users on VMS will
- generally type file names with VMS syntax.
-
- The EMACSLOADPATH logical name, if you use it, may contain directory names
- in either Unix or VMS syntax, but not mixed. This is NOT a VMS logical name
- with multiple equivalences.
-
- find-file prompts with the current directory. You can then type a relative
- directory spec to get somewhere else in the hirearchy. For instance:
-
- Find File: emacs_library:[src][-.lisp]startup.el
-
- is converted to emacs_library:[lisp]startup.el by expand-file-name. The
- basic rule is:
- ][- is treated like /.. (dir:[file.sub][-.other] ==> dir:[file.other],
- dir:[file.sub][-] ==> dir:[file])
- ][. elides the ][ (dir:[file][.sub] ==> dir:[file.sub])
- ][alpha backs up to the previous [ (dir:[file][other] ==> dir:[other])
- a colon appearing after a ] forces a new "root" disk.
- (dev:[file]dev2:[other] ==> dev2:[other])
- expand-file-name also tries to be smart about decnet node names, but this is
- not yet known to work.
-
- * A possible problem.
-
- For VMS versions 4.4 and up, make sure the file SYS$SYSTEM:RIGHTSLIST.DAT
- has WORLD:R access. Emacs reads this file to check file access. If this
- file does not have appropriate access, Emacs may think that you cannot write
- any files. [don't think this is true anymore -rbr 7 nov 92]
-