Hacker News: lzybkr

New comment by lzybkr in "Writing a debugger from scratch: Breakpoints"

lzybkr — Wed, 27 Sep 2023 21:18:39 +0000

Not 5 levels, but I once wrote debug visualizers for a compiler using funceval (the visualizer uses the debugger to run code in the target process).

I think I once had to debug the debugger debugging the compiler compiling itself which felt like another really weird kind of recursion.

New comment by lzybkr in "Windows Subsystem for Android"

lzybkr — Wed, 26 Jan 2022 17:48:08 +0000

It's about trademarks - see https://twitter.com/richturn_ms/status/1245742145119510529

New comment by lzybkr in "Ask HN: Best way to host a website for 500 years?"

lzybkr — Fri, 22 Oct 2021 18:04:51 +0000

Microsoft Research has been working on DNA storage: https://www.microsoft.com/en-us/research/project/dna-storage...

New comment by lzybkr in "How does apt render its fancy progress bar?"

lzybkr — Wed, 13 Oct 2021 15:45:20 +0000

Saqib Shaikh, a blind developer at Microsoft, gave this short talk on using Visual Studio: https://www.youtube.com/watch?v=94swlF55tVc

I realize this isn't a console, but I think it is a good demonstration of an expert doing typical developer activities.

New comment by lzybkr in "Curl Wttr.in"

lzybkr — Fri, 26 Jun 2020 05:42:50 +0000

PowerShell can be shorter by 1 character for this use case:

  irm wttr.in

irm is an alias for Invoke-RestMethod which is similar to Invoke-WebRequest but better for non-html responses like json or plain text.

New comment by lzybkr in "Show HN: A syntax highlighter for Git and diff output, written in Rust"

lzybkr — Mon, 27 Apr 2020 18:31:57 +0000

If you to use this on Windows, you'll need to update `less.exe` with my patched version - https://github.com/lzybkr/less/releases/tag/fix_windows_vt

New comment by lzybkr in "Show HN: A syntax highlighter for Git and diff output, written in Rust"

lzybkr — Mon, 27 Apr 2020 18:30:27 +0000

It does not, but it seems like a popular request: https://github.com/dandavison/delta/issues/40

Error Handling in a Correctness-Critical Rust Project

lzybkr — Thu, 09 Apr 2020 01:39:40 +0000

Article URL: http://sled.rs/errors.html

Comments URL: https://news.ycombinator.com/item?id=22819049

Points: 3

# Comments: 0

New comment by lzybkr in "Freeman Dyson Has Died"

lzybkr — Fri, 28 Feb 2020 17:47:38 +0000

I guess it's time to reread Starship and the Canoe - a great book about Freeman's nuclear weapon powered spaceship and his son George's interest in building boats. I thoroughly enjoyed it 25+ years ago.

New comment by lzybkr in "MS TextWorld: open-source engine that both generates and simulates text games"

lzybkr — Wed, 20 Mar 2019 04:29:58 +0000

AFL might eventually get lucky, but I'm guessing you'd want a hybrid approach that combines symbolic execution with a fuzzer like AFL, e.g. QSYM [1].

[1] https://www.usenix.org/system/files/conference/usenixsecurit...

New comment by lzybkr in "Rust 1.32 released"

lzybkr — Thu, 17 Jan 2019 21:40:41 +0000

Visual C++ has the __debugbreak() intrinsic function.

If you have JIT debug enabled, you will be prompted to attach your debugger to the process when hitting such a breakpoint.

New comment by lzybkr in "12 Factor CLI Apps"

lzybkr — Tue, 09 Oct 2018 13:47:23 +0000

With PSReadLine, you can change that:

  Set-PSReadLineOption -EditMode Emacs

  Set-PSReadLineKeyHandler -Key Tab -Function Complete

New comment by lzybkr in "Creating a bash completion script"

lzybkr — Tue, 25 Sep 2018 00:06:05 +0000

I'm optimistic about binaries providing completions, I think we'll see more of that as tools adopt frameworks like https://github.com/clap-rs/clap or https://pypi.org/project/argcomplete/ which can provide completions for your favorite shell.

But I do think many important/useful binaries will never provide completions, or provide sub-par completion that people will want to improve, so we can't ever count on completions from binaries.

Recently I've been thinking some about how the LSP (https://microsoft.github.io/language-server-protocol/) might be useful for a CLI. A readline implementation could use something like a LSP for syntax coloring and completion.

Imagine having a consistent editing in your favorite shell, repl, and editor.

New comment by lzybkr in ""Pwned Passwords" V2 With Half a Billion Passwords"

lzybkr — Wed, 21 Feb 2018 22:34:45 +0000

Here is a quick PowerShell script - it supports the pipeline so you can automate, e.g. if you use a command line password manager.

https://gist.github.com/lzybkr/85b4dbd6536ea5351e8d8e492a432...

New comment by lzybkr in "Microsoft Has Manually Patched Their Equation Editor Executable"

lzybkr — Fri, 17 Nov 2017 18:41:49 +0000

I have no specific insight to this patch, but I do have personal experience binary patching a popular Microsoft product.

My patch was to the VC++ compiler nearly 20 years ago. We had source, and my fix was also applied to the source (which I'd imagine is still there today), but a binary patch also made sense in the short term.

The binary that I patched was used to build another important Microsoft product, and this bug was found late in the product cycle where any compiler change was risky.

We weren't 100% confident we had the exact sources used to build that version of the compiler (git would have been handy then), we only knew, plus or minus one day, what the sources where.

After carefully evaluating the binary patch versus the risk of building from uncertain source, the binary patch was taken to reduce risk.

I'm no reverse engineer, but this was a pretty interesting exercise in RE even though I had sources. I had no symbols, and the binary was optimized so that functions were not contiguous, cold paths were moved to the end of the binary. Just finding the code I needed to patch was not easy.

The code review was fun - a dozen or so compiler engineers reviewed the change on paper printouts - the most thorough review I've had in my career, and the only one that used paper.

To the best of my knowledge, this binary was never used to build anything other than that specific version of the product which I won't name - not that it matters really, the product is still in use, but that version is unlikely to be in use anywhere anymore.

New comment by lzybkr in "Some Excel users pop F1 off their keyboards (2012)"

lzybkr — Fri, 22 Sep 2017 20:12:18 +0000

I wrote PSReadline (readline for PowerShell) and never bothered implementing overwrite mode.

It took about 3 years before anyone complained, and I think there is still just the one complaint.

New comment by lzybkr in "Getting started with the F# and .Net ecosystem"

lzybkr — Wed, 07 Jun 2017 15:14:59 +0000

It's used in production for Microsoft Security Risk Detection - here is a good blog post describing how F# is used: https://blogs.msdn.microsoft.com/dotnet/2016/12/13/project-s...

New comment by lzybkr in "Looking Forward: Support for Secure Shell"

lzybkr — Tue, 02 Jun 2015 21:15:11 +0000

At least a few people want vi-mode in the shell, see https://github.com/lzybkr/PSReadLine/pull/101

New comment by lzybkr in "Looking Forward: Support for Secure Shell"

lzybkr — Tue, 02 Jun 2015 21:04:03 +0000

To be clear - the ISE (powershell_ise.exe) doesn't support interactive console apps. powershell.exe supports them just fine.

New comment by lzybkr in "Introducing PackageManagement in Windows 10"

lzybkr — Thu, 30 Apr 2015 13:41:11 +0000

It hasn't been announced anywhere unless you count random tweets. I should post something on the PowerShell team blog one of these days.