OpenVi VS sioyek

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

OpenVi: Portable OpenBSD vi for Unix systems\ (22 comments)

Sioyek is a PDF viewer designed exactly for reading research papers and textbooks: https://github.com/ahrm/sioyek.

Sioyek: a PDF viewer optimized for reading research papers and textbooks. https://github.com/ahrm/sioyek

It has a lot of niche features, but my favorite is the ability to preview or jump to references even when they are not linked in the PDF file.

I implore all developers of PDF readers to implement sioyek's overview feature[0]. When you hover on a cross-referenced entry, it opens a little preview window with the contents of the reference. It is an absolute game-changer for reading textbooks and technical papers; I cannot overstate its utility.

[0] https://github.com/ahrm/sioyek#overview

Has anyone been able to run the sioyek PDF viewer (https://github.com/ahrm/sioyek) on Asahi? I've tinkered around a little, but the max I've gotten to is a black window with the executable complaining about an inability to compile certain shaders. Would this be due to the current OpenGL in mesa-asahi-edge (and thus can't be solved until we get more recent OpenGL version support) or is there some way to finagle around this?

Maybe chat to the dev of https://github.com/ahrm/sioyek about adding this as a feature. It's probably the closest pdf viewer I can think of that might do something like this in the future.