Restore default command naming as in Spring Shell 3

[ullenboom]

In Spring Shell 3, the default command naming changed from snake_case to camelCase:

shell:>help
AVAILABLE COMMANDS

Built-In Commands
	clear: Clear the terminal screen
	history: Display or save the history of previously run commands
	quit, exit: Exit the shell
	help: Display help about available commands
	version: Show version info
	script: Execute commands from a script file
FsCommands Commands
	minimumFreeDiskSpace: Display required free disk space
	freeDiskSpace: Display free disk space

I would like to have the previous default naming back.

Additionally, I noticed a change in how command group names are derived from the command class name.
A @Component named FsCommands is now shown as “FsCommands Commands”, whereas previously it was “Fs Commands”. I preferred the earlier naming convention.

[fmbenhassine]

Thank you for reporting this issue.

In Spring Shell 3, the default command naming changed from snake_case to camelCase:
I would like to have the previous default naming back.

Indeed, that has changed. I will put it back as in v3. However, in v3, it was kebab-case and not snake_case. Here is the output I get with 3.4.1 (see attached file):

  .   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/

 :: Spring Boot ::               (v3.5.10)

[...]

2026-01-31T08:26:36.407+01:00  INFO 28627 --- [demo-shell-v3] [           main] c.example.demo.DemoShellV3Application    : Started DemoShellV3Application in 0.853 seconds (process running for 1.119)
shell:>
shell:>help
AVAILABLE COMMANDS

Built-In Commands
       help: Display help about available commands
       stacktrace: Display the full stacktrace of the last error.
       clear: Clear the shell screen.
       quit, exit: Exit the shell.
       history: Display or save the history of previously run commands
       version: Show version info
       script: Read and execute commands from a file.

Default
       free-disk-space: 
       minimum-free-disk-space: 



shell:>

Additionally, I noticed a change in how command group names are derived from the command class name.
A @component named FsCommands is now shown as “FsCommands Commands”, whereas previously it was “Fs Commands”. I preferred the earlier naming convention.

I do confirm that in v4 we append " Commands" to the class name, and we need to document that (or remove it) so users know how to name their classes. I will open a separate issue for that.

whereas previously it was “Fs Commands”.

From the sample I shared, when no explicit group is defined, custom commands seem to end up in a Default group. I don't see any way of deriving the group name from the class name. I don't know how you ended up having "Fs Commands".

gh1281.zip

[ullenboom]

Argh. I keep mixing up kebab-case and snake_case like a toddler who can’t tell left from right.
I’ve always used @ShellComponent and @ShellMethod, so that’s basically my mental reference point.