I just made public an auctex preview package that I have been working on for some time. It essentially shows the preview locally and temporarily in a frame or as an 'after-string, similar to what Overleaf has been doing recently.
https://github.com/haji-ali/preview-point Any feedback/bug reports are appreciated. One of the "helper" packages that I wrote is `preview-dvi` which fixes what I think are several issues with preview related to robustness and ensuring files/folders are not orphaned in the preview directory. In addition to plugging my package here, I wanted to check if these are indeed real issues, and if there is interest in implementing those fixes in preview.el. I'll try to summarize the issues here. The fixes are all marked by "NOTE" in my preview-dvi.el - In `preview-dvipng-process-setup`, `TeX-sentinel-function` is set temporarily to a function which just shows a message. This is corrected immediately in `preview-start-dvipng` where `preview-dvipng-sentinel` is used. This is an issue becasue `sit-for` is called in `preview-start-dvipng` which may process output of running processes (through timers for example) which means that a process that is done by that time could have the temporary sentinel being called. - In `preview-dvipng-place-all`, the `filenames` property in overwritten in two places. This lead in some cases (which I haven't been able to pin down exactly yet) to orphaned files. I think checking this property and deleting corresponding files before they are overwritten is better. - When the preview command is aborted, there is a chance that this happens before the previews are generated but after a temp directory is create, in this case an empty folder is left behind. I think `preview-dvi-abort` should delete the folder if it is empty. This also happens in preview-gs-place. - `preview-place-preview` calls `preview-clearout` which deletes old overlays and their associated files. But I think this creates an issue when `preview-leave-open-previews-visible` is non-nil, where the same file is used in the new overlay causing image display errors in some cases. Let me know if you agree that these issues need fixing. I note that I tested/"fixed" dvipng part, but other processes have similar code. -- Al
