TeXShop

The following changes were made:

• If the user removes a folder from ~/Library/TeXShop and then runs TeXShop, the folder will be recreated with default contents. Curiously, this did not apply to the folder ~/Library/TeXShop/Engines/Inactive, but now it does. Before this change, a user could remove ~/Library/TeXShop/Engines and that entire folder would be recreated, including the Inactive subdirectory, but that technique destroyed any special engines the user might have created.
• When new versions of TeXShop are introduced, most folders in ~/Library/TeXShop are not changed because these folders store files created and edited by the user. But the Inactive folder is updated because users should have the latest versions of these items. This update adds new files and folders and modifies existing files and folders, but it does not remove files or folders no longer needed. I'm thinking of changing this behavior so Inactive is completely "cleaned up", but that is a more drastic step that needs to be carefully considered. In the meantime, users can accomplish that complete cleanup by removing the Inactive folder and letting TeXShop recreate it.
• The Typst program was recently updated to version 0.9.0, and Jeroen Scheerder updated the material in ~/Library/TeXShop/Engines/Inactive/Typst for the new version. If you are already using Typst in TeXShop, go to this location. An early section in the document "AboutTypst.pdf" explains how to download and install Typst. Follow these instructions to obtain the new version. The last section of this document explains how to move the contents of the "Advanced" folder into appropriate places. Scheerder revised the contents of "Advanced", so move the revised folders into the same spots.
• Version 5.20 added a preference item to activate transparency when calling Ghostscript. That item adds a flag to Ghostscript calls, but the flag is only relevant on recent versions of Ghostscript. So TeXShop checked the version of Ghostscript and did not add the flag if the version being used was not recent enough. This check involved calling a shell script that was incompetently written (by me) and failed in Sonoma. The script has been rewritten and the bug is fixed on Sonoma.
• In version 4.61, the bibtex UTI was changed from org.tug.bib to org.tug.tex.bibtex at the request of the BibDesk team. But not all data structures were changed, breaking the creation of new bibtex files from within TeXShop. This bug was not noticed until now. It is fixed.
• Version 5.03 of TeXShop included an example program explaining how to create interactive documents using tex4ht. The source code for such a document is ordinary latex. When typeset by pdflatex, the result is a static pdf file. But when typeset by tex4ht, the result is a web page with interactive content. The sample document is in ~/Library/TeXShop/New/Demo.