I was preparing a test build to check if linking against a new library worked fine in production. Trying to distribute the app using my Developer ID (but this would also have happened in a step before uploading to the App Store), I got this: Found an unexpected Mach-O header code: 0x72613c21 Oops? Like probably most developers, I have absolutely no clue about many crucial steps in the app making process. Especially stuff like code signing and most build settings elude me – I pick up pieces over the years, but not with the same speed with which I’m getting better at writing apps. So I didn’t understand what’s going on at all here. The search results I got weren’t that useful, so this post is meant to fill the vacuum for the next person running into this.
I’m having all my project in git repositories. And since I discovered the magic of Magit in Emacs, I sometimes want to have a familiar, interactive interface to select hunks for a commit without having to fire up a proper GUI app for stuff that I don’t already edit in Emacs.
In my previous post, I shared a function to fetch macOS Finder’s frontmost window path using AppleScript. The result was then opened in dired so you can import your Finder session into Emacs, so to speak.
Quite often I have a directory open in macOS Finder that I want to open in Emacs dired, e.g. to mass-rename files, copy stuff to a remote machine via SSH, or what have you. In my last post, for example, I used Gifox to create a GIF and then viewed the result in Finder. To add the GIF to my blog post, I needed to copy it over into the appropriate website project directory. Since I was writing that post in Emacs already, I wanted to quickly copy the file from my Downloads folder (my default scratchpad for output like screenshots and screen recordings, including GIFs) over to the blog post’s location.
Today I found that NSTextView has a bug where it won’t automatically scroll to keep the insertion point visible when you hit Enter or Return to insert a line break. Update 2022-04-26: This bug is resolved on macOS 12 Monterey! So I’d suggest something like:
