nvi
OpenVi
nvi | OpenVi | |
---|---|---|
1 | 8 | |
1 | 150 | |
- | - | |
10.0 | 7.5 | |
over 1 year ago | 11 days ago | |
C | C | |
GNU General Public License v3.0 or later | GNU General Public License v3.0 or later |
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nvi
OpenVi
- Portable OpenBSD vi for Unix systems
- Genealogy of Vim (2017)
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OpenVi: Portable OpenBSD vi for Unix systems
The behavior of the traditional vi is much different than vim and other clones. Nvi was a actually a re-implementation of the traditional vi for 4BSD (to be clean of AT&T code) and thus was originally intended to be bug-for-bug compatible, but breaking away where the original vi behavior was nonsensical or terrible.
For vim, `set compatible` or `set cp` is close, but still not traditional vi by any means.
A multibyte variant of the tradition vi is maintained - https://github.com/n-t-roff/heirloom-ex-vi/.
Nvi (now on version 1.8x) is also maintained - https://repo.or.cz/nvi.git
Nvi2 is yet another fork of Nvi, https://github.com/lichray/nvi2
Despite the very similar names, all of these editors have a variety of different features, and are structured very differently.
Nvi has a concept of a front-end and a back-end (which uses the BDB database). OpenVi uses the OpenBSD version of Berkeley DB which derives from 1.85. Nvi (1.8x) provides a minimal version of code also derived from that release intended from use with Nvi, and (IIRC) also provides support for using Db3/4/5. Similar situation for Nvi2.
Nvi 1.8 has been structured where a third library layer has been added, which doesn't exist in OpenBSD's vi or OpenVi. There is scripting support (Tcl, Perl, etc.) and GUI code in the other various forks ... all of these support various different options as well.
I should probably make a matrix of these, but you can get an idea by looking at the settable options implemented in each of the variants (as they historically include a comment to document from where the option originated):
OpenVi: https://github.com/johnsonjh/OpenVi/blob/22c2a7022e31d91e09e...
OpenBSD vi: https://github.com/openbsd/src/blob/master/usr.bin/vi/common...
Nvi2: https://github.com/lichray/nvi2/blob/5fcdc13656500a8c5b4c073...
Nvi1: https://repo.or.cz/nvi.git/blob/HEAD:/common/options.c#l52
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Hacker News top posts: Feb 19, 2022
OpenVi: Portable OpenBSD vi for Unix systems\ (22 comments)
What are some alternatives?
mg - Micro (GNU) Emacs-like text editor ❤️ public-domain
nvi2 - A multibyte fork of the nvi editor for BSD
elvis - The elvis vi-clone (written by Steve Kirkendall)
nextvi - Next version of neatvi (a small vi/ex editor) for editing bidirectional UTF-8 text
grist-core - Grist is the evolution of spreadsheets.
src - Read-only git conversion of OpenBSD's official CVS src repository. Pull requests not accepted - send diffs to the tech@ mailing list.
heirloom-ex-vi - The Traditional Vi (vi with many enhancements from Gunnar Ritter)
signify - OpenBSD tool to sign and verify signatures on files. Portable version.
pEmacs - pEmacs - Perfect Emacs
Unix-Text-Processing - Recreated sources for the book "UNIX Text Processing," published in 1987.
Odin - Odin Programming Language
neovim - Vim-fork focused on extensibility and usability