You see, over time ruby-debug (or at least the command-set portion) has been trying to align its command set more with the gdb command set. In places this would be harmful, I’d like to know.

Here’s an example. In earlier versions of gdb there was a “script” command to run a debugger command script. The corresponding gdb command name is “source”, so “script” changed to “source” in version 0.10.0.

One advantage of keeping compatible with gdb is that learning one will reinforce learning the other.