Questions tagged [debugging]

Debugging is a methodical process of finding and reducing the number of bugs, or defects, in a computer program.

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How to debug “company backend” initialization problems?

I am getting error messages initializing some company backend packages, but messages only appear in the *Messages* buffer, like: Company backend 'company-web' could not be initialized: Symbol's ...
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273 views

emacs crashes while opening .emacs file

When i try to open my .emacs file with emacs i get an error as such. $ emacs .emacs Fatal error 11: Segmentation fault Backtrace: emacs[0x4f74cb] emacs[0x4dcf3e] emacs[0x4f611e] emacs[0x4f6283]...
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135 views

Emacs freezes while editing a tex file

Emacs freezes while I was moving cursor in a latex file with AucTeX-mode (and LaTeX-mode). Emacs becomes black and I can do nothing, including C-g. I followed the approach in this answer, and obtained ...
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1k views

Can't exit Emacs with error “End of file during parsing”

Every time I press c-x c-c to exit Emacs, it shows "End of file during parsing" in the minibuffer. I cursorily examined my .emacs and did not find any mismatching parenthesis. Any idea what's the ...
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582 views

Debugging a “Warning (bytecomp): reference to free variable” message

I just upgraded to a new bleeding edge version of Emacs in OS X: brew install emacs --HEAD --use-git-head --with-cocoa --with-gnutls --with-rsvg --with-imagemagick I understand that this version is ...
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476 views

c-indent-line-or-region: Variable binding depth exceeds max-specpdl-size

I'm trying to define a new major mode using define-generic-mode and want to try reusing c-indent-line-or-region for my indent-line-function. I've inserted (set (make-local-variable 'indent-line-...
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1answer
1k views

Debugging and setting breakpoints in Java code built with Gradle

I am using Emacs (v24.4) for writing Java applications. I have created a Java library that I am building using Gradle (v2.2) and testing with Spock Framework where I have all my test cases. I would ...
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50 views

wildcard expansion in buffer

I'm debugging with pdb in emacs and one of the parameters to the program I'm debugging is a list of regular expressions wrapped in quotes. Basically, pdb someProgram.py 'regex .* .*' from the ...
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242 views

Unable to get backtrace for error

I have installed paredit & need to turnoff smartparens. I checked this answer and I have added (advice-add #'smartparens-mode :before-until (lambda (&rest args) t)) to my prelude starter ...
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1answer
25 views

Gnus fails opening larger imap group

If I try to open an larger imap group (a few thousand messages both read and unread) Gnus gives a warning: Wrong number of arguments: #, 2 And the Summary window is empty or it contains only some of ...
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1answer
42 views

mark-sexp (Wrong number of arguments)

((foo(bar)) ...
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1answer
46 views

Byte compilation error with use-package

The beginning of my ~/.emacs.d/init.el file looks like this: ;; MELPA (require 'package) (setq package-enable-at-startup nil) (setq package-check-signature nil) (add-to-list 'package-archives '("...
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22 views

Continuously redirect debugging information (e.g. *Messages*) to file

My Emacs configuration (Emacs 27, Doom-Emacs config with lots of user-specific tweaks, running on MacOS) sometimes hangs at seemingly random times, and the kill -SIGUSR2 <emacs PID> has no ...
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29 views

ad-Advice-package--add-to-archive-contents: Symbol's function definition is void: package-desc-vers

Friends, I have put strong effort to write an understandable account of the problem. Thus, I ask you to open all the site links quoted at the place of citation to follow the problem history. I have ...
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33 views

C-h v gives " Symbol’s value as variable is void: default

I'm running 26.1, I don't believe I have anything weird help-related in my .emacs. When I try to get help on a variable, C-h v, it tells me Symbol’s value as variable is void: default. Any hints of ...
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15 views

emacs debugging -interpreter-exec being displayed when should see string returned from function

This is a problem I am seeing running emacs v26.1 on Windows 7, but the problem does not appear to be present when running on ubuntu. Code below: #include <iostream> #include <string> ...
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37 views

Unable to send email through my second account

I have set up email in emacs using mu4e for both my personal and university account (both use gmail). However I am unable to send email from my university account. Personal account works totally fine....
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23 views

Spacemacs: “Wrong type argument: stringp, nil” Auctex error when building tex file

following a recent update, Auctex now refuses to build. Throwing a wrong type argument: stringp, nil error. The full debug text: Debugger entered--Lisp error: (wrong-type-argument stringp nil) string-...
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1answer
25 views

How to print to the stdout / stderr from an emacs graphical session?

I'd like to print into the terminal that started emacs, instead of using Emacs message, whats the most convenient way to do this in emacs that uses the terminal? (printf "some number %d some string %...
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31 views

How to debug org-caldav-sync?

I'm trying to sync Google Calendar over OAuth2 using org-caldav. However, when I execute M-x org-caldav-sync, the following error occurs: *Messages*: Contacting host: www.googleapis.com:443 json-...
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1answer
38 views

Error in newly installed magit -head branch header wrong type argument

I just installed the magit package in emacs 26.3 (using CentOS 7 OS). When I start it with M-x magit, I get the error below. It works fine for me in an older installation, and the only difference I ...
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17 views

Debugging huge memory allocation occurring before identified problematic function

I identified a particular situation which causes emacs allocates infinitely memory (and then freezes my PC). To be specific, I have an external link [[file:article.djvu::5][problematic djvu file]] ...
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10 views

Possible to name closures for easier reading of backtrace?

Let's say I write the following code: (let* ((f (lambda () (debug)))) (funcall f)) This will produce the following backtrace: Debugger entered: nil (closure (bootstrap-version t) nil (debug))() ...
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50 views

Troubleshooting “Match data clobbered by buffer modification hooks”

When running bibtex-reformat I get Match data clobbered by buffer modification hooks. I know according to the post here that one of my change hooks is clobbering the match data. In fact, when I set ...
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52 views

Can't run emacs from terminal.Cannot open load file: No such file or directory

Emacs 26.1 Linux Mint 19 Open terminal, write emacs, but I get error: Warning: Could not find simple.el or simple.elc. Cannot open load file: No such file or directory
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29 views

How to find what is creating and killing so many buffers?

A bunch of creating and killing buffers in my setup and I can't track down what is it. Here is my debug code: (add-hook 'kill-buffer-hook (lambda() (message "Killed: %s / %s" major-mode (...
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42 views

Can not install vue-mode on Emacs 25

I have emacs 25.2.2 on Ubuntu 18.04 I want to install vue-mode package. But I am getting this error message: vue-mode is an incompatible package. ...
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2answers
87 views

How to print a stack trace into the stderr from elisp?

There are cases Emacs wont print stack traces on error How can I make elisp print a stack trace from my own code? (into the stdout/stderr for example) Something like Python's traceback: import ...
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134 views

AucTex and PDF Tools Not Working

For the past few days I have been trying to get Emacs to update and display my PDF when I press C-c C-a, once saved. I save with C-x C-s. But everything I have tried fails, including every other ...
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39 views

pandoc: getCurrentDirectory:getWorkingDirectory: permission denied (Operation not permitted)

I'm trying to render the output of a markdown file using C-c C-c p. On doing so, a webpage opens on my browser displaying pandoc: getCurrentDirectory:getWorkingDirectory: permission denied (Operation ...
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19 views

Enable trace-function from org-mode

I test the following procedure from org-mode #+name: case-2.1.1-factorial.el #+BEGIN_SRC elisp (defun factorial(n) (if (= n 1) 1 (* n (factorial (- n 1))))) (trace-function #'factorial) ...
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1answer
35 views

symbol's value as variable is void: command, when using ibuffer-sidebar

I installed ibuffer-sidebar (https://github.com/jojojames/ibuffer-sidebar) and added the following to my ~/.emacs.d/init.el: (use-package "ibuffer-sidebar.el") (require 'ibuffer-sidebar) (setq ...
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38 views

Error `(wrong-type-argument stringp nil)` on helm-swoop

I am trying to run helm-swoop (using a keybinding) and I am getting the following error. Debugger entered--Lisp error: (wrong-type-argument stringp nil) regexp-quote(nil) helm-swoop-pre-input-...
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50 views

Why is Emacs hanging or seeming like it isin an infinite loop?

In my current Emacs major-mode for Tecplot macro development, I have a few functions defined: (defconst tecplot-macro-mode-syntax-table (let ((table (make-syntax-table))) ;; ' is a string ...
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70 views

Annoying Error on Quit

Emacs throws an error every time I use C-g to cancel a process. This is getting annoying. Debugger entered--Lisp error: (quit) read-from-minibuffer("Switch to buffer: " nil (keymap (keymap (11 . ...
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62 views

I got an error: Package 'tabbar-20160524' is a system package,not deleting

I installed spacemacs using "git clone https://github.com/syl20bnr/spacemacs.git ~/spacemacs/.emacs.d" but I got an error: Package 'tabbar-20160524' is a system package,not deleting.... When I ...
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41 views

Why am I getting `max-specpdl-size` error on one markdown file when opening via projectile but not dired?

I am getting a max-specdl-size error on only one .markdown file. I have increased the size via (setq max-specpdl-size 50000) to test, and I still get the error. This does not happen on any other ....
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1answer
639 views

Debugging with dap-mode for python and taking user input

I am trying to make dap-mode for python working on spacemacs. For the most part I was able to get it working, but I am having issues taking in input on the CLI def main(): a = input(">") The ...
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19 views

Don't restore previous window configuration on debugger commands

When using the emacs lisp debugger, if I invoke it change the window configuration invoke it again (most likely by hitting a breakpoint through the d command) my changed window configuration ...
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76 views

Wrong type argument: arrayp, nil in X mode

I'm getting a strange error on Emacs 27. Only in GUI mode (not in terminal mode), typing / to open the Evil search functionality results in the error wrong type argument: arrayp, nil being displayed ...
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132 views

How to get a stack trace for “Eager macro-expansion failure:”

On startup I'm getting this message: Eager macro-expansion failure: (wrong-number-of-arguments (3 . 3) 2) How can I find whats causing the warning? --debug-init doesn't do anything in this case as ...
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9 views

Line of error in Emacs Regression Test (ERT) framework

I am refactoring some code and adding doc-tests as suggested here. The previous iteration passed the tests. Now running ERT in batch mode with eemacs -batch -l ert -l org-clock-split.el -f ert-run-...
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42 views

emacs-jupyter debugging and realgud

emacs-jupyter supports pdb by displaying the pdb prompt in a minibuffer. I have a feeling that I should be able to connect to it with realgud:pdb, similarly to how I can realgud:track-mode-enable in ...
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81 views

Org Mode Clock-In Task Showing Void Function Definition

When trying to clock in a task in org mode I am getting this error: Troubleshooting so far: tried erasing .elc files from elpa org directory and re-loading. Tried updating org mode. Update failed (...
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533 views

.emacs showing error “Wrong type argument: listp, closed” during start up

I am getting an error Wrong type argument: listp, closed while starting my Emacs. I tried to debug each line and do a M-x eval-buffer during configuration. At at time, it was showing only End of line ...
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133 views

ac-php “Wrong type argument: hash-table-p, nil” when calling company-complete

I'm using emacs 27 compiled from git sources and company for code completion. I tried to set-up ac-php with company and php-mode, but when company tries tp perform auto-complete, I get the following ...
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1answer
88 views

How to edit code in the source window using realgud?

I've started using realgud:pdb for python debugging in emacs: https://github.com/realgud/realgud When you begin a realgud session, it opens a command window and a source window. Keys like 'n' and 'b'...
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39 views

How to eliminate emacs -Q startup lag

I'm trying out emacs. With no .emacs file and starting emacs 26.1 with emacs -Q on Debian 10, it takes two seconds for the welcome screen to show up. Before the welcome screen, there is a message "...
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84 views

Error running timer ‘ac-update-greedy’: (void-variable org-link-types)

I very recently updated to Emacs 26.3 and Org 9.2.6, and am getting the above-mentioned error whenever I type "[[" in an org-mode buffer to type a hyperlink. Unsurprisingly, no error after turning off ...
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1answer
67 views

How to check whether an optional param was input?

I have a command with an optional argument whose value is a number. I need: If no input argument then use default value (1000) else use input arg. (random t) (defun insert-random-number-at-point(&...