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SumatraPDF new features: March 18, 2026 New in the SumatraPDF pre-release builds: DDE commands accept arguments Commands sent...
yesterday
1

SumatraPDF new features: March 18, 2026

from Krzysztof Kowalczyk blog [alt+shift+b] in programming

yesterday
New in the SumatraPDF pre-release builds: DDE commands accept arguments Commands sent via DDE can take arguments, the same as in custom shortcuts (#5383). Loading message in tab While a document loads, its tab shows a “loading” message instead of the home...
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Optimizing memory use in markdown parser I’m porting gpui-component (a Rust UI component library built on GPUI) to C++ as gpui-cpp. By which...
22nd Aug 2026
2

Optimizing memory use in markdown parser

from Krzysztof Kowalczyk blog [alt+shift+b] in programming

22nd Aug 2026
I’m porting gpui-component (a Rust UI component library built on GPUI) to C++ as gpui-cpp. By which I mean: my friend Claude does the porting, I’m just directing. It uses markdown-rs (a CommonMark + GFM parser) markdown parser so I ported it too. Then I optimized it. This post...
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Finding active GitHub forks from the command line I maintain SumatraPDF on GitHub. People fork it and make their own changes. I want to know which...
18th Jun 2026
1

Finding active GitHub forks from the command line

from Krzysztof Kowalczyk blog [alt+shift+b] in programming

18th Jun 2026
I maintain SumatraPDF on GitHub. People fork it and make their own changes. I want to know which forks are active and what they’re working on. GitHub has a Network tab for this. I find it lousy. It’s hard to see active forks at a glance. Panning and zooming the UI is slow and...
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Speeding up JavaScript function with AI help A new JavaScript library pretext for fast text measuring / layout popped up on social...
29th Mar 2026
1

Speeding up JavaScript function with AI help

from Krzysztof Kowalczyk blog [alt+shift+b] in programming

29th Mar 2026
A new JavaScript library pretext for fast text measuring / layout popped up on social media. Potentially interesting given its focus on speeding up text rendering in web apps and me writing web apps and liking them being fast. I looked at the code and saw a function isCJK()....
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How to run msvc cl.exe from command-line (powershell) So you’ve installed Visual Studio and you want to run the compiler cl.exe from command-line....
16th Jan 2026
1

How to run msvc cl.exe from command-line (powershell)

from Krzysztof Kowalczyk blog [alt+shift+b] in programming

16th Jan 2026
So you’ve installed Visual Studio and you want to run the compiler cl.exe from command-line. Microsoft makes it surprisingly hard. They give you a shortcut which opens a terminal window with cmd.exe setup for compilation. But I don’t want a separate window, I want to use the...
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From JSON to TOON TOON stands for a Token-Oriented Object Notation. It’s a new text format that has the same...
15th Dec 2025
1

From JSON to TOON

from Krzysztof Kowalczyk blog [alt+shift+b] in programming

15th Dec 2025
TOON stands for a Token-Oriented Object Notation. It’s a new text format that has the same capability as JSON but uses less space. It was invented to lower costs of sending data (tokens) to LLM AIs but it has 2 advantages over JSON: smaller than JSON more readable than JSON It...
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Bugs I fixed in SumatraPDF Unexamined life is not worth living said Socrates. I don’t know about that but to become a better,...
1st Jul 2025
32

Bugs I fixed in SumatraPDF

from Krzysztof Kowalczyk blog [alt+shift+b] in programming

1st Jul 2025
Unexamined life is not worth living said Socrates. I don’t know about that but to become a better, faster, more productive programmer it pays to examine what makes you un-productive. Fixing bugs is one of those un-productive activities. You have to fix them but it would be even...
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Showing UI on mouse move, in Svelte 5 In my note taking application Edna I’ve implemented unorthodox UI feature: in the editor a top left...
11th Jun 2025
55

Showing UI on mouse move, in Svelte 5

from Krzysztof Kowalczyk blog [alt+shift+b] in programming

11th Jun 2025
In my note taking application Edna I’ve implemented unorthodox UI feature: in the editor a top left navigation element is only visible when you’re moving the mouse or when mouse is over the element. Here’s UI hidden: Here’s UI visible: The thinking is: when writing, you want...
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Implementing Notion-like table of contents in JavaScript Notion-like table of contents in JavaScript Long web pages benefit from having a table...
24th Aug 2024
99

Implementing Notion-like table of contents in JavaScript

from Krzysztof Kowalczyk blog [alt+shift+b] in programming

24th Aug 2024
Notion-like table of contents in JavaScript Long web pages benefit from having a table of contents. Especially technical, reference documentation. As a reader you want a way to quickly navigate to a specific part of the documentation. This article describes how I...
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Porting a medium-sized Vue application to Svelte 5 Porting a medium-sized Vue application to Svelte 5 The short version: porting from Vue...
27th Jun 2024
90

Porting a medium-sized Vue application to Svelte 5

from Krzysztof Kowalczyk blog [alt+shift+b] in programming

27th Jun 2024
Porting a medium-sized Vue application to Svelte 5 The short version: porting from Vue to Svelte is pretty straightforward and Svelte 5 is nice upgrade to Svelte 4. Why port? I’m working on Edna, a note taking application for developers. It started as a...
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