Re: [Matlab-emacs-discuss] mlint not working, void variable

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Hi Nicholas,

Sorry I missed this when it first came in.

First, if you aren't already, try using the version of matlab-mode from 
git in case you happen to have an older version.  I happen to be on 
Emacs 27 which required some changes to mlint / linemark to work 
correctly with those versions of eieio (the clos library in Emacs.)  I 
haven't tried it with E29.

You stack trace is a bit hard to interpret when byte compiled.  If you 
do this:
M-x load-librry RET mlint.el RET

it will load the src, not the byte compiled version, and you should get 
an easier to understand stack.

Since the error is related to a cl-* variable within one of the clos 
macros, I wouldn't be surprised if more changes were needed to account 
for anything new in E29.  In the E29 NEWS file in git, I see it says you 
may need to add '(require 'eieio-compat')' to some files written against 
older versions of eieio, so that is a possibility.

Eric

On 7/18/22 5:48 AM, Nicholas Harrison wrote:
> Hi and thanks for the package!
>
> I'm trying to get linting to work, but nothing will show. I would love 
> help debugging.
> My steps:
> 1. Open .m file and turn on matlab-mode
> 2. Turn on mlint-minor-mode
> 3. Run mlint-buffer
>
> This is run from emacs -Q with packages loaded first and variables to 
> executables set. Apparently something right is happening since I see 
> some lines in the *M-Lint* buffer, but I get the following error and 
> stack trace:
>
>     Debugger entered--Lisp error: (void-variable cl--nm)
>       #f(compiled-function (&rest args) #<bytecode -0x155fd570868d38f2>)()
>       #f(compiled-function (cl--cnm e active-p) #<bytecode
>     0xbaea774c3e9d26b>)(#f(compiled-function (&rest args) #<bytecode
>     -0x155fd570868d38f2>) #<mlint-lm-entry
>     mlint-lm-entry-158f7c4907cc> nil)
>       apply(#f(compiled-function (cl--cnm e active-p) #<bytecode
>     0xbaea774c3e9d26b>) #f(compiled-function (&rest args) #<bytecode
>     -0x155fd570868d38f2>) (#<mlint-lm-entry
>     mlint-lm-entry-158f7c4907cc> nil))
>       #f(compiled-function (&rest cl--args) "Set object E to be
>     active.\nACTIVE-P if it should be made visible." #<bytecode
>     -0x1e9379681ed694e5>)(#<mlint-lm-entry
>     mlint-lm-entry-158f7c4907cc> nil)
>       apply(#f(compiled-function (&rest cl--args) "Set object E to be
>     active.\nACTIVE-P if it should be made visible." #<bytecode
>     -0x1e9379681ed694e5>) #<mlint-lm-entry
>     mlint-lm-entry-158f7c4907cc> nil)
>       linemark-display(#<mlint-lm-entry mlint-lm-entry-158f7c4907cc> nil)
>       #f(compiled-function (e) #<bytecode
>     0x11b9e8c2c87755be>)(#<mlint-lm-entry mlint-lm-entry-158f7c4907cc>)
>       apply(#f(compiled-function (e) #<bytecode 0x11b9e8c2c87755be>)
>     #<mlint-lm-entry mlint-lm-entry-158f7c4907cc> nil)
>       linemark-delete(#<mlint-lm-entry mlint-lm-entry-158f7c4907cc>)
>       #<subr
>     F616e6f6e796d6f75732d6c616d626461_anonymous_lambda_28>(#<mlint-lm-entry
>     mlint-lm-entry-158f7c4907cc>)
>       mapc(#<subr
>     F616e6f6e796d6f75732d6c616d626461_anonymous_lambda_28>
>     (#<mlint-lm-entry mlint-lm-entry-158f7c4907cc>))
>       mlint-clear-warnings()
>       mlint-buffer()
>       funcall(mlint-buffer)
>       (condition-case e (funcall hook) ((debug error) (signal
>     'doom-hook-error (list hook e))))
>       doom-run-hook(mlint-buffer)
>       run-hook-wrapped(doom-run-hook mlint-buffer)
>       (condition-case e (run-hook-wrapped hook #'doom-run-hook)
>     ((debug doom-hook-error) (if debug-on-error nil (lwarn hook :error
>     "Error running hook %S because: %s" (if (symbolp (car (cdr e)))
>     (symbol-name (car (cdr e))) (car (cdr e))) (car (cdr (cdr e)))))
>     (signal 'doom-hook-error (cons hook (cdr e)))))
>       (let ((hook (car --dolist-tail--))) (condition-case e
>     (run-hook-wrapped hook #'doom-run-hook) ((debug doom-hook-error)
>     (if debug-on-error nil (lwarn hook :error "Error running hook %S
>     because: %s" (if (symbolp (car ...)) (symbol-name (car ...)) (car
>     (cdr e))) (car (cdr (cdr e))))) (signal 'doom-hook-error (cons
>     hook (cdr e))))) (setq --dolist-tail-- (cdr --dolist-tail--)))
>       (while --dolist-tail-- (let ((hook (car --dolist-tail--)))
>     (condition-case e (run-hook-wrapped hook #'doom-run-hook) ((debug
>     doom-hook-error) (if debug-on-error nil (lwarn hook :error "Error
>     running hook %S because: %s" (if (symbolp ...) (symbol-name ...)
>     (car ...)) (car (cdr ...)))) (signal 'doom-hook-error (cons hook
>     (cdr e))))) (setq --dolist-tail-- (cdr --dolist-tail--))))
>       (let ((--dolist-tail-- hooks)) (while --dolist-tail-- (let
>     ((hook (car --dolist-tail--))) (condition-case e (run-hook-wrapped
>     hook #'doom-run-hook) ((debug doom-hook-error) (if debug-on-error
>     nil (lwarn hook :error "Error running hook %S because: %s" (if ...
>     ... ...) (car ...))) (signal 'doom-hook-error (cons hook (cdr
>     e))))) (setq --dolist-tail-- (cdr --dolist-tail--)))))
>       doom-run-hooks(after-save-hook)
>       apply(doom-run-hooks after-save-hook)
>       run-hooks(after-save-hook)
>       basic-save-buffer(nil)
>       save-buffer()
>       mlint-buffer()
>       #<subr funcall-interactively>(mlint-buffer)
>       apply(#<subr funcall-interactively> mlint-buffer)
>       funcall-interactively(mlint-buffer)
>       #<subr call-interactively>(mlint-buffer nil nil)
>       apply(#<subr call-interactively> (mlint-buffer nil nil))
>       explain-pause--wrap-call-interactively(#<subr
>     call-interactively> mlint-buffer nil nil)
>       apply(explain-pause--wrap-call-interactively #<subr
>     call-interactively> (mlint-buffer nil nil))
>       call-interactively(mlint-buffer nil nil)
>       command-execute(mlint-buffer)
>
>
> Any ideas?
>
> Emacs version: GNU Emacs 29.0.50 (build 1, x86_64-pc-linux-gnu, GTK+ 
> Version 3.24.20, cairo version 1.16.0) of 2022-06-14
> Matlab version: R2022a
> OS: Linux Mint 20.3 Cinnamon
>
>  Nick
>
>
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