
The file ~/Library/TeXShop/bin/tslatexmk/latexmkrcDONTedit has been modified to allow setting of a directory for most aux-like files using TeXShop's `parameter' directive. Only a small number of engines were affected. Active engines are not changed during updates, but this change can be seen in ~/Library/TeXShop/Engines/Inactive. It is likely that bash will still be available for some time, but just in case, a number of engines which previously used bash have been changed to use zsh instead. The default shell in macOS switched from bash to zsh and Apple marked bash as deprecated. Since this location is not rewritten during updates, a copy of the theme with explanations by Harcombe is in ~/Library/TeXShop/New/Theme-Dracula.

The theme is now supplied in ~/Library/TeXShop/Themes. TeXShop 4.70 - Change log not available for this version TeXShop 4.69 - Added "perl script" = pk to the list of file typinput es understood by TeXShop - Herbert Schulz revised the active engines pdflatexmk.engine and sepdflatexmk.engine and revised the folders "Latexmk" and "GhostscriptTransparencyEngines" in ~/Library/TeXShop/Engines/Inactive to improve passing parameters to the engines and on through pdflatexmk to the various binary files being called - Keiran Harcombe supplied a new dark scheme named Dracula.
