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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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26 views

Debugging in Unity3d with emacs?

I develop in Unity, and have been using emacs as my text editor for development. Debugging however has always needed to be done through monodevelop (and it crashes half the time while doing this). My ...
0
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0answers
30 views

Spacemacs error when loading `.spacemacs` which uses package `flycheck`

I added the following at the end of my ~/.spacemacs file: (use-package flycheck :defer t :init (global-flycheck-mode)) When I do this, I get Spacemacs encountered an error while loading your '/...
1
vote
1answer
21 views

Why is check-ert output cut at 70 characters column?

Sometimes when packaging emacs packages for Debian, I need to debug test failures. Then the debugging output is cut at 70 characters like in this bug report: https://bugs.debian.org/cgi-bin/bugreport....
1
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1answer
32 views

(RegEx-)Replace: Sporadic Match data clobbered by buffer modification hooks

I know this was asked in other contexts already, but I couldn't find anything related to C++ development with my hooks that could help me. I am working a lot with replace and query-replace and query-...
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0answers
32 views

Unknown *emacs* process

I recently realized that every time I lunch emacs, after a minute, a strange buffer appear in buffers list that is linked to an emacs process, infact it also appear in system's process list: When I ...
2
votes
1answer
20 views

Get asked to confirm safe theme forever

I created a theme which I stored in ~/.emacs.d/themes/, added this directory to custom-theme-load-path, and put (load-theme "the-theme.el") in my init.el. Now restarting emacs, I get prompted whether ...
3
votes
0answers
71 views

Multiple Quit messages in my *Messages* buffer

When I hold C-p or C-n to navigate any page, the movement is jerky and I get multiple Quit messages in my *Messages* buffer. I checked the C-h l to see the commands ran, it only has the C-n [next-...
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0answers
23 views

neotree: `all-the-icons-icon-for-dir` raises void-function error

I am getting an error with neotree and i dont know why the arguments from call-interactively are nil. Edit: The Problem is within neotree and i have an empty init file just with neotree and the ...
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1answer
38 views

Why do parts of my Emacs buffer turn invisible when I'm writing elisp?

When I'm writing elisp code, parts of the buffer that I press enter on turn invisible (i.e. they get the property invisible set to t). I haven't been able to reproduce this reliably, because it doesn'...
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0answers
26 views

Slime inspector for emacs lisp

I want to know, if there is some possibility of inspecting an object as slime inspector does. For example, using libyaml I get the following result, it worked well: ELISP> (yaml-read-from-string ...
0
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1answer
143 views

Gui won't start, throws an “Args out of range: 0, 100”

The only response I got is this: Weird behavior: GUI won't start, but terminal emacs will But he doesn't clarify on the solution. I have the same problem, my .Xdefaults and/or .Xresources causes ...
0
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1answer
11 views

Adjust end index in selected region

Following the advice given here, I wrote the following code to enclose the text selection in phpbb italics tags : (defun wrap-in-phpbb-italics-tag (b e) "does what its name says." (interactive "...
2
votes
1answer
53 views

M-= shortcut suddenly stops working in Emacs in KDE

I'm trying to run M-= on a region of text, but nothing happens. I think the shortcut is registered (I don't get a message like "M-= is undefined") but the execution stops for some reason and there is ...
1
vote
1answer
82 views

Wrong type argument: stringp, (“~/capture.org”)

I am setting up a few hydras, one of which should open a frequently accessed file. The following command works, if I bind a keyboard sequence to it: (lambda () (interactive) (find-file "~/capture.org"...
2
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0answers
49 views

Emacs/realgud/Python: How to display variables at each step?

Using emacs and realgud one can have a separate buffer that automatically shows where the program is currently stopped (by displaying that line of source code). Is there an easy way to get realgud to ...
0
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0answers
24 views

fault-tolerant `check-parens` resp. `scan-lists`

Looking for a way to have a fault-tolerant navigation. I.e. in case of broken syntax, uncomplete forms etc. --when check-paren fails--, it should try some heuristics. Unfortunatly can't use check-...
1
vote
1answer
49 views

Problem debugging in `gud-mode' (M-x `gdb' with `many-windows' enabled)

I'm debugging a large codebase (written in C++). Everything works perfectly if I run gdb from a regular terminal as follows: $ gdb <program-name> Reading symbols from <program-name>......
1
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1answer
27 views

Unclear error message from a function call in my init file

With my Emacs 26.1 on my 10.13.6 Mac, I want Emacs to systemically open my file located at /Users/ewandelanoy/Documents/html_files/Printable/latinized_agreda2.txt with the mac-roman-mac encoding, ...
-1
votes
1answer
32 views

how to get region start and region end from the whole buffer as variables to call another func

(defun buffer-to-shell() (let (buffer mark-whole-buffer))) (shell-command-on-region start end "sed s/foo/bar/") ;; start, end not defined ) As you might see there are undefined variables start ...
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0answers
49 views

emacs debugging project like (vscode or eclipse)

I use Emacs for project development in Go, the only thing that forces me back to VSCode is for graphical debugging. Is there any package that will allow me to do graphical debugging like visual studio ...
1
vote
1answer
38 views

Read-only text stops working after a while

This is a very strange issue and its cause is hard to determine. I often leave Emacs open for days, or even weeks at a time. My current emacs-uptime is 9 and a half days. That's pretty normal and ...
0
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1answer
27 views

Identify which mode is throwing an error

I am attempting to edit a file. Emacs is preventing me from making the edit, and throwing: Args out of range: #<buffer user.action.js>, 4965, 17721. It is completely not obvious to me where this ...
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0answers
12 views

helm-comint-input-ring - get error: shell-mode-map

windows 10, emacs 26.1, helm 3.0 I use C-c C-l (comint-dynamic-list-input-ring) I get something like this: But I don't like this. I want to use helm-comint-input-ring. I want to get something like ...
0
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2answers
66 views

When I start Emacs: Symbol's value as variable is void: shell-mode-map [duplicate]

System: Windows 10, Emacs 26.1, Helm 3.0 In my init.el: ;; Shell commands history (define-key shell-mode-map (kbd "C-c C-l") 'helm-comint-input-ring) When I start Emacs I get the following error: ...
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0answers
16 views

How to open 3 emacs windows when debugging using gdb

I am debugging a program that outputs 8 or more lines of display and requires input. So my IO window has to be say 10 rows or so in height. But I also want to see the source code AND of course the ...
0
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1answer
20 views

How to create a customized translation table when using the command translate-region?

When using the command translate-region, the command asks to use which table. There are already some predefined tables (by pressing TAB) such as cp51932-decode cp51932-encode eucjp-ms-decode ...
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0answers
106 views

(wrong-type-argument number-or-marker-p nil) when calling run-python

When I call run-python from the package python.el Emacs displays me the following error: error in process filter: Wrong type argument: number-or-marker-p, nil To investigate further I called toggle-...
2
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0answers
143 views

How to diagnose emacs hanging and 100% cpu on startup?

How can I diagnose this issue? I've tried using strace and I see the following that seems to be stuck in a loop: recvfrom(5, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., ...
2
votes
1answer
58 views

Halting Clojure debugger after pressing the Continue Command

I use Emacs with Cider to debug Clojure Code. After setting a breakpoint using the default debugging framework, there appears the list of debugging options one might execute shown in this Figure I ...
2
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2answers
119 views

Debugging a recalcitrant eldoc function

I'm using SLIME and common LISP (SBCL) for some weekend hacking. I've just upgraded to emacs 26.1 on Mac OS X 10.13.5. Now I've run into a problem with the setup where I'm suddenly getting: error ...
1
vote
2answers
100 views

How to fix org-dotemacs broken by latest update?

I'm sorry to have to ask this, but lisp debugging is not one of my strengths. For some time I've been happily using Joe Bloggs's somewhat hoary but useful org-dotemacs.el system to maintain my emacs ...
0
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1answer
90 views

Unable to set relative line number as a default

I am trying to setup Emacs to have relative line numbering enabled by default via this plugin. According to the readme file Relative line numbering should already be enabled by default (by ...
2
votes
0answers
436 views

Extremely slow startup on Windows - How to debug?

I have a serious problem with an extremely slow spacemacs startup (emacs-init-time = ~200s). (The server works, but this is so slow I cannot debug some other problems that I am trying to fix) My ...
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0answers
117 views

Disabling recentf mode?

I try to disable this via (recentf-mode -1) (setq recentf-mode nil) ;; mysteriously switches to t after some time but it keeps automatically turning on after some time and is causing problems for ...
0
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0answers
30 views

Debug missing keystrokes

Something has happened to my Emacs environment that causes keystrokes to be dropped occasionally. It seems to happen more often in isearch, or after a week and a couple hundred buffers open. The ...
0
votes
1answer
579 views

Wrong type argument: stringp, nil

I am essentially trying to build a list of strings, where each of those strings in turn are built by their own functions. However, I get the following error when the code is evaluated: Wrong type ...
2
votes
1answer
46 views

Define a function to execute multiple commands

Here is part of my init.el: (defun xx-devanagari-script () (interactive) (save-excursion (face-remap-add-relative 'default :family "Lohit Devanagari") (text-scale-increase) (text-...
1
vote
1answer
156 views

emacs Aborted (core dumped)- centOS 7.0 emacs 25.3 — Please Help

Dear stackexchange users, I would really appreciate your help in fixing my issue. I am new with centOS 7.0 with less a year of experience. I was using emacs-24.3 until the following error came up, so ...
1
vote
1answer
167 views

emacs lisp error : Need a pre-parsed url

I'm trying to use tern with the latest version of emacs (27 : master branch) and I'm getting the following error : Request failed: ((wrong-type-argument Need a pre-parsed URL. [cl-struct-url http ...
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0answers
184 views

How can i resolve tramp-error: Not a Tramp file name: using a /docker address?

Trying to set up .dir-locals to use a custom python interpreter inside a container so i can use run-python and get the REPL inside the container. I have this setup which seems to partially work in ...
0
votes
1answer
177 views

override “C-SPC” set-mark-command

I'm using expand-region and experimenting with it trying to find the right key binding As per expand-region README it binded to (global-set-key (kbd "C-=") 'er/expand-region) But I'm not satisfied, ...
1
vote
0answers
289 views

debugging: how to optimize a RealGUD workflow

I code in Python and I my workflow uses debuggers (I coded for 8 years in Matlab). I develop numerical simulation codes: most of the time it returns a result, the question is: "Is the result right?" ...
1
vote
2answers
66 views

How to troubleshoot a key binding prompting for more key presses?

I have a function bound to Ctrl-b, this runs a command immediately, however after some time running emacs, pressing this binding shows text C-b in the message bar, prompting for other keys to be ...
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0answers
58 views

ECB causes error “Completion is not active in the minibuffer”

Emacs 25.3.1 on Fedora 26, with ecb 20170728.1221 installed. After activating ECB with ecb-minor-mode, any attempt to use any kind of completion gives me a completion buffer in place of the ...
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0answers
46 views

C-S-a doesn't select text to the line beginning

The Key combination Ctrl + Shift + a doesn't work in my GUI-Emacs to select a region from the position of pointer to the line start. Doing C-h k and the above key combination shows no documentation.
3
votes
1answer
35 views

Completion in edebug-eval-expression

Is there a way to get completion-at-point to work inside edebug-eval-expression (i.e. similarly to the way it works in eval-expression)? Presently, when I press tab inside of a call to edebug-eval-...
4
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0answers
153 views

list of current variables in a buffer for Python code

I would like to find a way to reproduce the "Workspace" of Matlab or the equivalent "Variables" window of the awesome pudb debugger directly in emacs for python code: it is a window which details the ...
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0answers
51 views

Stepping through source in emacs, line pointer will not advance past file open line

I have just started using emacs for debugging and I have two questions. First, I am working in gdb-many-windows mode. I have set a breakpoint and it gets properly hit in the source code window, ...
3
votes
1answer
121 views

Fixing wrong-type-argument to looking-at in Emacs 25 js-mode on large files

When using js-mode (or js2-mode) on Emacs 25.1 (in Debian 9) to edit some large files, any attempt to insert text after some "random" point in the file fails with an elisp stack trace: Debugger ...
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0answers
75 views

Debugging with gdb does not allow user to enter multiple console inputs

I wrote the following C++ program in Emacs named check_emacs_debug.cpp #include <iostream> int main() { for(int i = 0; i < 10; ++i) //Breakpoint { int num; std::...