Re: [Matlab-emacs-discuss] completion and goto-function in matlab-mode (Doom emacs)

[Eric L. <eri...@gm...>]

Hi,

The existing matlab completion stuff should work with company .. or at 
least there is code in there referencing company completion engine.  I 
was never a fan so I don't use that particular package.

In the MATLAB menu, you will find a "Locate MATLAB function" option 
which is similar to jump-to functionality like etags.

Newer emacsen now how 'xref' as a bit of infrastructure and keybinding 
but matlab mode doesn't plug into it yet.  In theory matlab mode could 
hook matlab-shell-locate-fcn into xref but I haven't researched how to 
do that yet.

Eric

On 11/27/20 12:44 AM, Jonathan Sahar wrote:
> Hi Eric,
>
> Thanks so much for taking the time to test it!
> It's not unique to that sturct.
> Is there anything that I need/can configure on terms of the completion 
> engine? I'm using company for most other things, maybe there's some 
> conflict, or some missing configuration?
>
> Thank you for the patch! I'll try it out, and I'll using Matlab mode 
> from the git source as well.
>
> Do you have a pointers for setting up jump-to-function functionally?
>
> Thanks again for all the help and information, it's really appreciated.
>
> Jonathan
>
> On Thu, 26 Nov 2020, 19:01 Eric Ludlam, <eri...@gm... 
> <mailto:eri...@gm...>> wrote:
>
>     Hi Jonathan,
>
>     I happened to have MATLAB 18a installed and was able to test using
>     matlab.el, and matlab-shell.el from git, but could not replicate a
>     completion problem.  Sorry. Is it special to the "EEG" data
>     structure,
>     or does this occur everywhere?
>
>     You had some other questions too.
>
>     Matlab mode does support CEDET, but you do not need to use CEDET in
>     order to use matlab mode.  MATLAB mode without support packages
>     supports
>     a  bunch of different completion features, but most are pretty
>     simple.
>     If you enable CEDET with the data base and have matlab-shell
>     running, it
>     will try to use the shell to find files on your path, but it
>     doesn't use
>     the shell for completions.  That code is pretty old and I don't think
>     those bits were every plugged together.
>
>     I did a little hacking and put together the attached patch that
>     enables
>     completion via MATLAB shell in MATLAB buffers.  It is rather
>     primitive
>     as it only does global symbols and knows nothing about the local
>     context, but perhaps it can serve as inspiration for putting
>     something
>     more complete together.
>
>     Lastly, in a MATLAB buffer, you can type:
>
>     M-x matlab-shell-describe-command RET
>
>     on a symbol and it should do vaguely what you were asking for below.
>
>     Eric
>
>     On 11/25/20 11:41 AM, Jonathan Sahar wrote:
>     > Hi Eric, thanks for your reply!
>     >
>     > I'm running version  '9.4.0.949201 (R2018a) Update 6'.
>     > I've installed matlab-mode through Doom emacs' (package! ...)
>     > directive, but I've looked at the changelog locally and on
>     > sourceforge, and the latest commit is the same one...
>     >
>     > Best,
>     > Jonathan
>     >
>     >
>     >
>     >
>     > On Wed, 25 Nov 2020 at 18:03, Eric Ludlam <eri...@gm...
>     <mailto:eri...@gm...>
>     > <mailto:eri...@gm... <mailto:eri...@gm...>>> wrote:
>     >
>     >     Hi Jonathan,
>     >
>     >     As new version of MATLAB come out, the text that comes out for
>     >     errors,
>     >     completions, and all sorts of things change which can break
>     the shell.
>     >
>     >     What version of MATLAB are you using, and which version of
>     the matlab
>     >     mode code are you using?
>     >
>     >     We made a bunch of updates last winter to ML shell which you
>     can get
>     >     from the git repository:
>     >
>     > https://sourceforge.net/p/matlab-emacs/src/ci/master/tree/
>     >
>     >     There are also a few extra fixes on the 'usage1' branch
>     which haven't
>     >     been merged into the main branch yet.
>     >
>     >     That all said, I don't recall big changes needed for completion
>     >     lately. :(
>     >
>     >     Eric
>     >
>     >
>     >     On 11/18/20 10:03 AM, Jonathan Sahar wrote:
>     >     >
>     >     > I've been working with matlab-mode and matlab-shell for
>     the last
>     >     few
>     >     > days, and I'm really digging it so far. The only two
>     things I can't
>     >     > get to work properly are completion - neither in shell,
>     nor in .m
>     >     > files - and jumping to function definitions, and I would
>     really
>     >     > appreciate some help with these. when I hit TAB in shell,
>     my text
>     >     > turns into
>     >     >
>     >     > |>> emacsdocomplete('EEG.(cond') |
>     >     >
>     >     > and when I hit RETURN I get (the appropriate):
>     >     >
>     >     > |emacs_completions_output = java.lang.String[]: 'cond'
>     'condeig' |
>     >     >
>     >     > but it's not integrated into the shell properly, i.e. I can't
>     >     choose
>     >     > which of the above I want, I have to re-type the command
>     along with
>     >     > the chosen completion. In .m files I just get nothing
>     except for
>     >     the
>     >     > word completion for words already in the buffer - which I've
>     >     > configured myself.
>     >     >
>     >     > I've read somewhere that the completion is meant to be
>     related to
>     >     > CEDET somehow but I couldn't make out much more (I'm
>     working on
>     >     Doom
>     >     > Emacs, and I seen to have CEDET installed, and can run
>     >     > matlab-cedet-setup, which does nothing as far as I can tell).
>     >     >
>     >     > As to function definitions - I don't even know where to
>     start..
>     >     I've
>     >     > read that ctags now supports matlab, but I don't know
>     where (if)
>     >     the
>     >     > actual .m files for the built-in functions reside in the
>     install
>     >     dir.
>     >     >
>     >     > Ideally I'd love to be able to stand on a function name and be
>     >     able to
>     >     > get the "help funcName" output in another buffer or
>     something (this
>     >     > works from the shell).
>     >     >
>     >     > Thanks a lot!
>     >     >
>     >
>