(COMMAND "SELECTSIMILAR") Unknown command "SELECTSIMILAR".

[baleti3266]

Does anyone know why trying to invoke "SELECTSIMILAR" command from autolisp doesn't work? I thought all commands are exposed to autolisp.
Running (COMMAND "SELECTSIMILAR") returns an error: Unknown command "SELECTSIMILAR".

[baleti3266]

strange, looks like running `(COMMAND ".SELECTSIMILAR")` (with a dot at the beginning) works. Does anyone know why dot is necessary? I assume it has something to do with selectsimilar being built in some different way than other commands, but would be curious to know exactly why

[pendean]

@baleti3266 Works fine here, are you by chance using a non-English language pack?

IMHO there is something to be said to always use the "dot" to ensure you are activating the core command in a LISP.

[cadffm · Accepted solution]

Hi,

what product you are talking? Share a screenshot of ABOUT dialog pls

It looks like something/someone undefined this command, but if so - also typing by hand it won't work.

Does Command: SELECTSIMILIAR<enter> starts the selectsimilar command, or the selectsimilarmode?

If not:

Command: REDEFINE<enter>SELECTSIMILAR<enter>

Try selectsimilar again, in commandline, with or without lisp.

If it works now, something/someone undefined this command.

[baleti3266]

interesting, thanks all
@cadffm autocad architecture 2026

> Does Command: SELECTSIMILIAR<enter> starts the selectsimilar command

Yes, I think so:

> Command: REDEFINE<enter>SELECTSIMILAR<enter>

> Try selectsimilar again

You are right, now (COMMAND "SELECTSIMILAR") works. Strange, now sure how it happened (searching for "selectsimilar" or "similar" in .my lsp scripts didn't show anything)

[cadffm]

That's strange.

Usually! If a command is "undefined", you can't start that command in commandline.

But if it works after redefine..

Perhaps a special thing I didn't know about.

Perhaps a special for ACA