NSTextView (Plain Text) and the Pasteboard: PasteboardType.string Is Not Handled
For a plain text (not rich text/RTF) NSTextView, I found that: Since NSTextView doesn’t understand the NSPasteboard.PasteboardType.string pasteboard type for reading or writing, I tried two approaches to handle plain text input (pasting) and output (cut/copy): The backport seems to work, but extending supported types sounds like more robust solution.
Overview of Attribute Fixing in NSTextStorage
NSTextStorage provides attribute fixing of user-entered text, via NSMutableAttributedString.fixAttributes(in:). Attribute fixing… NSMutableAttributedString.fixAttributes(in:) always work on full paragraph ranges. It extends the passed-in range as needed “to cover the last paragraph partially contained”.
‘Black Box’ Unifies Software Modeling in Modules
The metaphor of the “black box” is very common in programming. It is so general that it’s nearly meaningless; but it summarizes a lot of specialized principles nicely and shows a unifying principle. A black box is characterized by: It can be applied to “modules” on all levels of abstraction.
Example of High Cohesion and Low Coupling with Presenter, View, and View Model
Here’s a short definition of the two terms: Cohesion is about how well elements within a module belong together and serve a common purpose. Coupling is about how much one module depends or interacts with other modules. Thus, cohesion is an intra-module concern whereas coupling cuts across modules [aka inter-module].
(Devopedia)
How to Fix When Some Text Changes Don’t Come with Automatic Undo?
When you work with NSTextView and happen to use insertText(_:) to programmatically insert text, you get an undoable action for free. This might give the impression you get undo/redo functionality for free. Eventually, you’ll notice how other changes don’t have an affordance in the “Edit” menu. While it’s possible to get “Undo Typing” and “Undo Set Color” from some function calls, it’s not possible to get “Undo Change Text Attributes” when you use NSTextStorage.addAttributes(_:range:).
Reactive Code is Sequentially Cohesive
Reactive, declarative code is sequentially cohesive: you have a sequence of events and reactions to events, and it’s pieces are tied together real close. The processing chain itself is then a function or feature of the app. The chain of operators is a thing itself; the step-by-step transformation is then reified into a sequence in one place: it has a beginning, an end, a sequential order of steps.
Delete to Beginning of Line in Emacs to Rewrite Code
Ever since Brett Terpstra posted about ⌘← to jump to the first character of the line back in 2014, I’ve used behavior like this in Xcode. Nowadays, ⌘⌫ automatically deletes up to the beginning of the line, stopping at whitespace. That’s quite handy to rewrite the current line.
10 Year Indieversary AMA Postmortem
Thanks everyone for joining the AMA yesterday! Was a fun experience :) We talked about a couple of technical and historic things. Here’s an outline of the pieces: The first, very successful two weeks of sale having passed, this adds up to a whopping $1.03 hourly rate! I sold the app 181 times […].
Replacing zoom-window with winner-mode to Temporarily Change Window Splits in Emacs
On Reddit, there was a recent thread called “Your dependency on external packages reduce with experience”. I have been using zoom-window in the past to temporarily “unsplit” buffers. So this:
Wiki and Website Updates
I’ve added a couple of “hidden pages” to the website:
10 Year Indieversary: AMA On Sep 6th
I realized that my officiel 10th “company” anniversary is just around the corner! To celebrate and hang out with people online, I’d like to party with all of you in a live chat and video. To round things up, I’m doing this Ask Me Anything style. No agenda from my part, but I’m open to any questions and inquiries.
SwiftUI Isn’t Easy to Get Into: My Road From Headache Towards Mastery
How long does it take to become a true SwiftUI master? How far am I on my own way to mastery? 🤔 Let’s quantify and have a wild guess! I start this introspective journey by looking at another topic I feel like I could become quite the expert, even though I am painfully aware of how much I still don’t know – Text Kit.
Drawing Studies: Tonal Values
This time I remembered to record our weekly sketch-together over Discord. Here’s a 4x speed version with narration of this evening’s sketches. The focus was on tonal values, so no colors, just pen and ink, then ink washes on watercolor paper. The paper I used here is the Moleskine watercolor pocket book (Affiliate link). I don’t like that paper for watercolor paintings, but it’s great for ink washes, because it absorbs the ink quite rapidly (unlike regular drawing paper).
Rely on @Published Property Wrapper Events, Not the Observed Object
Pop quiz! What is the output of this program, e.g. when run in a playground or an autoclosure block? The documentation indicates as much, but it can still be a surprise in your programs when you treat the @Published event as a mere signal to read multiple values from the observed object.
Schedule End of the Work Day Using Org
To get more structure into my day so I get work stuff done in time and have free time in the evenings to tackle other things, I’m now experimenting with notifications to end the work day. The following is a translated version of the current data. I am using the German term "Feierabend" (which you can shout well); “end of work” is a bit clumsy, and it doesn’t sound like an exclamation.
Output Port Adapter for Single Point of Configuration in Complex UI
When you have nested and complex UI components with multiple sub-view controllers, passing an optional output port (event handler or delegate) down the tree is cumbersome. There are two straight-forward approaches: The second option is “cleaner”, but for a two or three object component might also feel a bit too much.
Emacs Blogging: Insert Tag from YAML Frontmatter Posts
My blog posts here usually have a line like: For tags I don’t use a lot, I sometimes don’t remember how to write them. So I do the only sane thing – and go to my website’s list of tags and look for a match. Got annoyed by that now after a couple of years :)
Disambiguate Code Signing Identities
I’ve recently added the code signing identities for a client to my dev Mac. Some old code signing scripts then failed to run: 🛑 Apple Development: ambiguous (matches “Apple Development: Christian Tietze (xxxxxxxxxx)” and “Apple Development: Christian Tietze (xxxxxxxxxx)” in /Users/myuser/Library/Keychains/login.keychain-db)
New Library Pages
I’ve added a new section to this site. Wanted to call it /books, but that’s taken and about my books :)
So I added the new /library index. It shows books added to my personal library sorted by year I read them.
At the moment, there’re only these three, all of which I needed (wanted) for the previous post:
- Christopher Alexanders’ A Pattern Language
- The Gang of Four’s book Design Patterns
- Gio Lodi’s Test-Driven Development in Swift
This collection is bound to grow. I missed something like this for a couple of years. An overview of posts about book would’ve been nice for lots of reasons.
Now the basics are prepared.
TDD Is About Writing Counter-Factual Statements
Writing unit tests first, in the manner of test-driven development, is some kind of “wishful programming”: you create a counter-factual situation in the test code, e.g. one that uses types and methods that don’t even exist. Then you add the implementation to make the counter-factual statements (and failing tests) the actual reality.
Key Binding to Select Paragraph or Org Element
I used to rely on M-h to mark the structural element in Emacs; in text buffers, that’d be the paragraph, in org buffers, that was the whole outline item (when the cursor was in the heading line, at least). Ever since I installed Emacs for Mac OS X which now is also on Emacs 28.1, this shortcut wouldn’t work for me anymore, because my Meta key is my left Command key, and Cmd-H is the macOS shortcut to hide the frontmost app.
TableFlip v1.4.0 Released
I’ve released an update to existing users of TableFlip last week. It works well so far, so now’s the time for the official announcement of the new version, available for direct download.
Most notable changes:
- TableFlip now
guessessophistically determines the delimiter in CSV files, if needed. So you can use;or\tjust fine, which means export from Numbers works out of the box. - Non-comma-delimiters also “stick” when saving. No auto-replacement to comma anymore.
- The CSV loading and saving is more robust, especially with quoted content. There’s been issued reported in the past, and these should now be fixed. Thanks for your emails and sample files, folks! ❤️
For my nerdy readers, behind the scenes I also upgraded Sparkle from the XPC branch to the actual Sparkle 2.0 stuff. I sincerely hope it will ingest the upcoming updates, too. (It’d not be the first time I broke the update mechanism of one of my apps, heh.)
What is TableFlip, you ask?
TableFlip is a fast tabular data editor – the ideal companion app for Markdown users who want beautiful tables in their documents. Open the file in both TableFlip and your text editor, and you’re set: TableFlip lets you edit all tables it finds inside your document and updates live as you edit your text.
Well, and you can edit CSV files, too, and export to LaTeX.
TableFlip v1.4.0 is available from the website and the Mac App Store.
DevCleaner for Xcode
Found DevCleaner for Xcode yesterday and gave it a spin. It’s freeware on the Mac App Store with a tip jar.
Developers who ever nuked their Derived Data folder (I have an alias in my .profile for that) know how much stuff Xcode collects over the years. And then there’s outdated iOS Simulator versions nobody needs anymore. And log files, of course, by Xcode.
I’m pleased to say that DevCleaner does a good job at enabling me to select what I want to remove from the set of things that could be obsolete.
I have Xcode 14 beta installed (to my dismay), so DevCleaner suggested all Xcode 13.x related things could go away. It tries to be smart and helpful here, but I kept the Xcode 13.4.1 logs just in case. The option is there.
Where in the past I would occasionally nuke all Derived Data, DevCleaner shows these folders in a sensible way, with a reference to the project location. I usually create throwaway projects to test and debug something in my Downloads folder. The derived data of these projects is absolutely useless after a month, week, or sometimes even a day. Since DevCleaner shows where the original project was located, I’ve been able to delete data for every long-gone project that was in my Downloads folder.
I cannot stress enough how cool I find this.
Deleting derived data folders is often hard to do by name alone: when I download a new version of a 3rd part dependency that I am using in my apps, and open the project in my Downloads folder, and play around with it, then I have two derived data folders for this dependency, but only one is relevant for the actual project. Either I don’t care and delete both when I know building them is trivial, or I don’t bother at all and they stay around forever.
I really, really like this feature.
Would be even better if I could sort or filter by origin path, but it’s ok the way it is.
Mac App Notarization Workflow in 2022
The Notarization API changed a bit, so my old scripts broke. Revisiting the approach, it’s delightfully simple to notarize an app nowadays if you use the Apple toolchain on macOS. I haven’t watched the WWDC 2022 video on Notarization but did take the documentation link there into account.
Shift-Click in Emacs to Select – A Simple Change With a Complex History
Sometimes I actually do wonder why the Emacs defaults are whatever they are. Someone somewhere decided that clicking with the left mouse button while holding shift should pop up an appearance menu where you can change font size and things like that. The behavior I expected from my personal history of 25 years or so of using computers is to extend the selection up to the clicked point.
Free Cmd-W in Magit to Close the Buffer
Magit binds M-w to magit-copy-buffer-revision. On my Mac, I use the left Command (⌘) key as the Meta key, though, and wired M-x, M-c, M-v to cut/copy/paste, leaving M-w aka ⌘+W to close the current buffer.
Magit’s Killer Feature #1: Commit Text Completion Based on the Diff
I’m using the Emacs git frontend (‘porcelain’) Magit for all my projects nowadays. I fire up GitUp (which is great) only to traverse the commit history visually. Here’s one of the reasons: With auto-completion framework company, I get completion suggestions when I type my commit message. These are based on the actual code diff of the commit.
@EnvironmentObject Is a Branched Global Variable
In SwiftUI, @EnvironmentObject is used to loosely couple any ObservableObject without directly passing it down the view hierarchy, e.g. via parameter injection. Unlike Singletons and global variables, Environment Objects are local to view hierarchies: different branches in the hierarchy can maintain different object references.
Happy People = Mac Users
I talked about my “job” the other day and, again, pointed out that I’m making apps, but for Mac, not iPhone. No, no, I also do iPhone. I just don’t like to, and avoid it if I can. But using a Mac, that is fun, and working on a Mac is great. The machines are good, the OS is still good. That’s what I believe the most. For the things I’m interested in making, the Mac is a good platform. It’s a platform to get serious stuff done. And I can be a part in making the experience enjoyable and make “work” fell less like a chore. That’s what I’m interested in.
Link Your Website to Mastodon via Metadata
Since hackers and normies alike check out Mastodon nowadays, here’s an undocumented (as far as I can tell) variant to connect your website link to your Mastodon profile. Update 2022-05-16: Dave Barr made a much nicer illustrated guide for this!
Dependency Injection and the Tree of Knowledge
On Twitter, Manuel Schulze (@zet_manu shared the Swift package Resolver that does dependency injection in a very convenient way with little boilerplate thanks to property wrappers: Mr Dr Dominik Hauser replied, and that’s how it entered my Twitter timeline. I was curious why people use packages like this – I know the concept from Java, but have always found constructor injection and maybe a Service Locator here and there to suffice.
PSA: TextKit 2 Has Bugs
When I linked to Marcin Krzyzanowski’s STTextView, I didn’t want to pollute the link post with this – but I did notice that Marcin added a very informative section to the README: a Bug Report List.
STTextView: A TextKit 2 Text Editor without NSTextView
In my recent post about the TextKit 2 sample app, commenter Frizlab pointed out that Marcin Krzyzanowski (@krzyzanowskim on Twitter) is doing TextKit 2 stuff. I didn’t notice that in my Twitter timeline even though I follow him for years now, so I was confused, nay, angry about the state of my Twitter timeline since Musk’s takeover /s.
And yes, Marcin does have a very extensive open source sample project that explores TextKit 2! He’s working on Swift Studio, a pure Swift IDE and his STTextView is a part of that.
So meet STTextView, a “TextKit2 text view without NSTextView baggage”.
One thing I love about the code comments for the UI compoents is the ASCII diagrams of layer contents, e.g. in STTextView.swift:
// STTextView
// |---selectionLayer (CALayer)
// |---contentLayer (CALAyer)
// |---(STInsertionPointLayer | TextLayoutFragmentLayer)
//
Am totally going to adopt this :)
Clean Downloads Folder on Mac with Hazel
I have a confession to make. I eased into this by sharing the same info on Twitter/Mastodon already. My ~/Downloads folder is a mess. It’s much less messy than your Downloads folder, most likely, but still. I achieved relative de-messification by automatically filing old downloads into sub-folders, one per month, like ~/Downloads/2022-05 Downloaded. That was amazing because the actual Downloads folder was clean, and old stuff was somewhat highlighted.
Weak Self – Closure Rules of Thumb
In Swift, you can weak-ify references to self in escaping closures, and then you need to deal with the case that the reference is gone when the block is called. Last month, Benoit Pasquier and Chris Downie presented different takes on the problem. That discussion was excellent. It prompted me to take some more time to revisit this problem systematically, and I took away a couple of notes for future-me.
TextKit 2 Example App from the Apple Docs
The Apple Developer Docs have an example app, “Using TextKit 2 to Interact with Text”. That’s related to WWDC 2021’s introduction to TextKit 2.
How to Upgrade Sendy from Version 5 to 6 from the Shell via SSH
I’m using Sendy for our newsletters. Recently, verison 6 was released. Here’s how I updated like a pro on my VPS via SSH. The beginner-friendly but ultimately drag-and-drop/FTP-based online instructions assume that you will be moving files over from “new location” to “existing location”. That’s quite cumbersome when all you have is SSH.
Center Window on the Current Monitor in Emacs, Simplified
Louis Brauer over on Xah Lee’s Discord helped simplify my Emacs window centering code (cf. original single monitor solution. It’s great, and only a handful of lines!
Transient Menus Galore
I just wanted to take a short minute to shout out to two transient.el based packages I discovered this week. One is org-menu, and bound to C-c m, it shows a transient menu of, well, transient keybindings to navigate around, move outline items, and do a lot of other things.
Fixing Our Recent Xcode 13.3.x Dependency Cycle Errors
So for quite some time, I had the Swift Build System Integration flag enabled to speed up my builds. It was good. I set it, it worked, I forgot about it. With Xcode 13.3 and 13.3.1, now, we got a lot of dependency cycle warnings out of nowhere. Clean build works, but any build afterwards would occasionally fail.
How to Assemble Menu Bar App Screenshots for Mac App Store
To make menu bar app screenshots for the Mac App Store, you need to fill 2800 by 1880 pixels with something that highlights a widget in the corner of the screen. Geoff Hackworth did this: Since today, you can look at the result of this on the App Store: check out Geoff’s app “SF Menu Bar”.
Aergrind by Knock Coffee Grinder, and Their Amazing Customs Duty Service
I bought a hand grinder that would replace our 40+ years old, dull antique. Of course I looked for advice on James Hoffmann’s YT channel and figured the Aergrind by Knock would be a great fit. As the man coffee scientist himself says, the grinder is so good it would’ve blown away any cheaper competition from his other video, so he included it in the premium segment comparison. That was one reason I considered this.
Add Any Directory to project.el’s List of Projects
I am using the built-in project.el in Emacs to find files in various git-backed projects. But I also have a shared folder of blog post drafts with Sascha at zettelkasten.de that does not have any version control backing. I couldn’t get that folder to show up in project.el’s list because of that.
Get Your xcode.tips Card Printouts!
Dominik Hauser maintains the illustrated xcode.tips page I’ve mentioned on Twitter here and there because the graphics are just lovely and the tips are really useful to become a proficient user of Xcode. It’s a complex piece of software, and the illustrations capture a tip in a single graphic, with shortcuts and UI hints and all.
Prioritize hl-line Highlight Over Neotree Faces
In hindsight, it looks like my quest to tweak how Emacs looks and feels is to make it more Mac-like. No wonder, because I really like the OS X-era UI. So I’m still using the system default selection highlight colors and want these everywhere.
More Swifty NSAttributedString Attribute Query Methods
NSAttributedString API takes an NSRange by-reference. That’s cumbersome to use, though, because you need to initialize a non-nil range, and there you should initialize it with NSNotFound to indicate an illegal state. Afterwards, you need to check if the range changed to a legal value.
Context Menu in Magit Status Buffers
I’m a very happy user of Magit, the amazing git frontend for Emacs. Today I noticed again that I miss one thing from GitUp, a GUI frontend for macOS, that I use when I’m selecting changes for a commit, discarding experimental file and line changes here and there in the process:
The Playdate’s Docs Are Made with More Love Than Most End Products
Michael Tsai shared a link to the Playdate’s Design Guidelines. The page blew me away. The Playdate is a handheld console that the team at Panic brought to live, and which you can actually buy since late last year.
What’s the Problem With Old But Excellent Mac Apps?
Tyler Hall wrote about “Half-Assed Mac Apps” the other day. His argument goes like this: Catalyst made it easy to deploy iPad apps to the Mac. But iPad apps don’t make the best experience on Mac. Users end up with more apps, but a lot of them being “half-assed” Catalyst ports.
Split Window in Emacs and Resize and Recenter Frame to Make Room
I got an email by reader Andrej this week, asking about ways to (ab)use frame recentering in Emacs so that when a split window is created, the frame would grow to make room. So if you have a frame with 1000px width, and split the window to the right, it should enlargen to 2000px width. And then recenter.
Add Numbers to Emacs tab-bar-mode Tab Titles for Quick Access
For about two months now, I’ve been using tab-bar-mode in Emacs to have multiple “workspaces” open. I was fine with buffer switching, too. But tab-bar-mode not only allows you to switch between buffers, but also window configurations – that means one tab will have 1 window with 1 buffer visiting a file, while another might have a gazillion split panes. So the main upside for me is to arrange stuff into panes aka windows, and then open a new tab to do something in a single-pane view.
Copy Dropbox Link to File Using Maestral
Joel Rendall on the Keyboard Maestro forums published a macro collection for Maestral users. Since my switch to Maestro from the macOS native Dropbox app with all its annoying features, there’s only one thing I missed from the Dropbox app – copying links to files in my Dropbox to share them with others. I do this quite often with video recordings for bug reports, I found.
I Uninstalled the Dropbox App in Favor of Maestral
Today I have uninstalled the Dropbox app from my Mac. I’ve been an early Dropbox user and invited friends until I got up to 10 GiB, which was a ton of storage back in the day. But the native apps gets more and more annoying; they have a history of faking system standard dialogs to “trick” you into installing the kernel extension with root privileges; and resource consumption was at times confusingly high. Stuff like that made me tired of the app.
Closing Circe IRC Buffers in Emacs Without Leaving the Room
It’s a hack but it works: To stay in a room (or rather: let the bouncer stay there) and still close the buffer locally, it helps to change the major mode of the circe buffer: M-x fundamental-mode RET. If you change the buffer’s mode to any text mode, the circe-mode specific teardown hooks won’t be triggered and you can close the buffer without leaving the room.