bug#58532: 29.0.50; Support displaying imenu entries in a separate buffer

[Daniel Martín]

Akib Azmain Turja <akib@disroot.org> writes:

>> Severity: wishlist
>>
>> It'd be great if imenu supported displaying its alist of entries in a
>> separate buffer.  This is particularly useful when the list of entries
>
> Something like imenu-list in MELPA?  That should be in Emacs core.
>

Yes, it'd be great to have something like that (perhaps simpler and less
opinionated) as an extension to imenu.  Or the feature can live as a
ELPA/Non-GNU ELPA package, I don't know.

>> has many levels (for example, it is the table of contents of a PDF,
>> supported in Emacs 29), because you could search for an entry very
>
> Really?  I'm on Emacs 29, and in DocView Mode I get the following error:
> imenu unavailable: "This buffer cannot use
> ‘imenu-default-create-index-function’".
>

Do you have mupdf/mutool installed?  It is a prerequisite for the PDF
outline feature to work.  If you have that CLI installed, then please
report it as a separate bug so we can investigate it.