"No items suitable for an index found in this buffer"

[romatthe]

Hi,

I'm trying to use your package, but I'm getting an error each time I try to open the side view:

imenu-unavailable-error: imenu unavailable: "No items suitable for an index found in this buffer"

I'm doing this in an Emacs-Lisp buffer, with elisp-mode being the major mode. I've just set up rhe package in the most simple way possible.

(use-package imenu-list
  :bind ("C-." . imenu-list-smart-toggle)
  :custom
  (imenu-list-focus-after-activation t)
  (imenu-list-auto-resize t))

I've checked if any packages interfered somehow with the index creation function, but it's simply set to imenu-default-create-index-function.

Any other things I can check to debug this?

Thanks!

Oh, and I'm using Emacs 26.2.

[bmag]

I am assuming you open an Elisp buffer, then activate imenu-list via imenu-list-smart-toggle. This error tells you the index is empty, so imenu-list has nothing to display. For example, an Elisp buffer with only use-package declarations (without defvars or defuns) has no index entries (without further customization to imenu). So if it is a similar case, then imenu-list is working as expected.

Otherwise, steps to debug include:

• invoke M-x imenu from the Elisp buffer to see if that works and to explore the index.
• get a backtrace by M-x toggle-debug-on-error followed by M-x imenu-list-update from the Elisp buffer to see where the error originates from (although we already know it's because the index is empty).
• check the relevant imenu variables for suspicious values: imenu-default-create-index-function, imenu-generic-expression and sometimes others. The exact variables that are relevant depend on the index function (the value of imenu-default-create-index-function), and I don't remember all of them off right now. These are all buffer-local values, so be sure you are looking at their values in the correct buffer.

If you could post the contents of the buffer then I could look at it on my side, but I'm pretty sure it's just that the index is empty.

[romatthe]

Thanks, I'll try this as soon as possible.

[romatthe]

I realized this issue was still open, sorry about that. I had to stop using Emacs for a while due to working on a bunch of different stuff and forgot about this.

Regardless, I think this was indeed a matter of imenu-list working just fine, but I interpreted the message as being an error rather than expected behaviour.

Again, sorry about leaving this open for such a long time.