os_390.txt For Vim version 9.0. Last change: 2019 Dec 07
VIM REFERENCE MANUAL by Ralf Schandl
zOS z/OS OS390 os390 MVS
This file contains the particulars for the z/OS UNIX version of Vim.
1. ASCII/EBCDIC dependent scripts zOS-has-ebcdic
2. Putty and Colors zOS-PuTTY
3. Motif Problems zOS-Motif
4. Bugs zOS-Bugs
5. Limitations zOS-limitations
6. Open source on z/OS UNIX zOS-open-source
The port to z/OS UNIX was done by Ralf Schandl for the Redbook mentioned
Changes, bug-reports, or both by:
1. ASCII/EBCDIC dependent scripts OS390-has-ebcdic zOS-has-ebcdic
For the internal script language the feature "ebcdic" was added. With this
you can fix ASCII dependent scripts like this:
let space = 64
let space = 32
2. PuTTY and Colors OS390-PuTTY zOS-PuTTY
If you see problems with syntax highlighting or screen corruptions when you
connect to z/OS using Putty, try the following:
- Configure Putty as "vt220" terminal (Connection->Data)
- Add the following 3 lines to your vimrc:
Note: is one character use <C-V><Esc> to enter it.
3. Motif Problems OS390-Motif zOS-Motif
Note: Seen with Vim 6.*, never tested since.
It seems that in porting the Motif library to z/OS, a translation from EBCDIC
to ASCII for the accelerator characters of the pull-down menus was forgotten.
Even after I tried to hand convert the menus, the accelerator keys continued
to only work for the opening of menus (like <Alt-F> to open the file menu).
They still do not work for the menu items themselves (like <Alt-F>O to open
the file browser).
There is no solution for this yet.
4. Bugs OS390-bugs zOS-Bugs
- Vim will consistently hang when a large amount of text is selected in
visual block mode. This may be due to a memory corruption issue. Note that
this occurs in both the terminal and gui versions.
5. Limitations OS390-limitations zOS-limitations
- No binary search in tag files.
The program /bin/sort sorts by ASCII value by default. This program is
normally used by ctags to sort the tags. There might be a version of
ctags out there, that does it right, but we can't be sure. So this seems to
be a permanent restriction.
- The cscope interface (cscope) doesn't work for the version of cscope that
we use on our mainframe. We have a copy of version 15.0b12, and it causes
Vim to hang when using the "cscope add" command. I'm guessing that the
binary format of the cscope database isn't quite what Vim is expecting.
I've tried to port the current version of cscope (15.3) to z/OS, without
much success. If anyone is interested in trying, drop me a line if you
make any progress.
- No glib/gtk support. I have not been able to successfully compile glib on
z/OS UNIX. This means you'll have to live without the pretty gtk toolbar.
Disabled at compile time:
- Multibyte support (multibyte)
- Right-to-left mode (rileft)
- Farsi key map (Farsi)
- Arabic language support (Arabic)
- Spell checking (spell)
- Perl interface (perl)
- Hangul input (hangul)
- Encryption support (encryption)
- Langmap ('langmap')
- Python support (Python)
- Right-to-left mode ('rightleft')
- TCL interface (tcl)
6. Open source on z/OS UNIX OS390-open-source zOS-open-source
If you are interested in other Open Source Software on z/OS UNIX, have a
look at the following Redbook:
Mike MacIsaac et al
"Open Source Software for z/OS and OS/390 UNIX"
IBM Form Number: SG24-5944-01
Also look at: