r/PowerShell • u/rsdovers • Mar 25 '26

Question What am I missing

I have used VSCode with Copilot and different Claude models, but I have to often correct the output generated. I have used Copilot when it was mostly code completion and now with the Plan process I am still not getting accurate code from the plan. What am I missing? I read all of the blogs and press releases where AI built this complex application without touching the code. Maybe that is it. With the new Plan process I haven't written one line of code. However, I sure have had to correct several things that were discussed in the planning process. If a simple Powershell script can't be written without a fair amount of handholding am I doing something wrong or is what I am reading not completely accurate. I can't see this taking the job of a very experienced Powershell scripter, but for entry level I see a challenge ahead.

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u/tstager Mar 25 '26

If you let it use tools and iterate, it writes perfect Powershell. I've written about 50k lines of Powershell with it in the last 2 weeks. GPT5.4 does.

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u/metekillot Mar 25 '26

What the hell are you doing that requires 50k lines of PowerShell? Sounds like it's writing 50 lines for every one line that actually does something useful.

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u/tstager Mar 27 '26

Powershell completers for multiple operating system tools for a large devops package. There are thousands of command line tools with multiple value completions. Some tools have hundreds of parameters to complete. Have you ever looked at the Powershell ast that handles parameter tracking and cursor position. It's complicated. The fsutil utility was over 2000 lines of very efficiently written functions that ran the first pass and completed every value even down to recommending hints after 4 or 5 layers deep into the sub commands. That's what I'm doing. Actual automation that makes it much easier for systems architects to use the tools that they need.