1

Recent versions of emacs come with package.el built in and provide the abbreviation M-x l-pac. However, l-pac is not recognized by smex or helm-M-x. M-: (l-pac) also does not work and the help functions do not seem to know about l-pac either, so it does not seem to be a an emacs function.

Where/How is l-pac defined?

3

l-pac is not a defined abbreviation. Completion for it is provided; that's all.

This comes from user option completion-styles, which you can customize. The default value (in Emacs 25.1, for example) is (basic partial-completion emacs22), which means try to complete input using, first, basic completion, then, partial completion, and finally, emacs22 completion.

It is partial-completion that is completing l-pac as you see. See the Emacs manual, node Completion Styles. There you see this:

partial-completion

This aggressive completion style divides the minibuffer text into
 words separated by hyphens or spaces, and completes each word
 separately.  (For example, when completing command names, `em-l-m`
 completes to `emacs-lisp-mode`.)

 Furthermore, a `*` in the minibuffer text is treated as a
 “wildcard”—it matches any character at the corresponding position
 in the completion alternative.

Perhaps smex and helm-M-x do not support this kind of completion? Or perhaps you need to look at their doc/help to see how they support it.

M-: (l-pac) does not work because l-pac is not a defined function. But if you use M-: (l-pac TAB then it should be completed OK to (list-packages. (You then need to add ).)

| improve this answer | |

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.