I would think it's obvious. Look at any commercially developed debugger for any language. Xcode. Eclipse. IntelliJ, VSCode. AllegroCL. Now compare that Emacs +

I would think it's obvious. Look at any commercially developed debugger for any language. Xcode. Eclipse. IntelliJ, VSCode. AllegroCL. Now compare that Emacs + anything. Atom/Pulsar + anything. Vi + anything. Just look at the screenshots. What's missing? Literally everything is missing, because it's just a CLI in a window. Want to add a breakpoint? Type in the window. Want to know how many threads are running? Type in the window. Want to pause a thread? Type in the window. Want to inspect a variable? Type in the window. Want to drill down through a complex data structure? Type that 50 character line correct in one go bitch. By god! Don't you dare complain! The irony of course is that all of these commercial products are using the exact same debugging infrastructure of the OSS counterparts. It's just that one group finished the job, and the other doesn't bother to finish the job.