Questions tagged [debug]

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debugging c++ code with dap-mode in Emacs does not display std::variables (e.g., vector, map, etc) correctly. Any idea to solve this problem?

When I debug c++ code in dap-mode with Emacs, the std::variables, such as vector and map, always have values, [0]: std, shown in the local variable area. Does anybody know what is going on? I am on ...
4
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1answer
56 views

Examine function arguments after debug-on-error

Here's a common debugging scenario: I am investigating a failure and for whatever reason I cannot instrument the relevant code with edebug. I can, however, in most cases get a backtrace via toggle-...
3
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2answers
79 views

What tools can help make the emacs debug output more readable?

I was expecting to find tools I can use to to e.g. prettify the stack trace, or e.g. show all variables that are bound at each level of the stack trace as you navigate, but haven't found anything. Do ...
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0answers
23 views

How do I debug a flask application from within emacs?

I want to use something like pdbpp or ipdb to debug a flask application. I've tried but not understood how to set a breakpoint in a python file that's part of a wider application and see it hit. There ...
0
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1answer
473 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 ...
0
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1answer
92 views

Tools to develop and debug ELISP code

I have some experience in Emacs-LISP. Today I spent 6 hours writing LISP code that I guess-timate would have taken 1h30 to write in Python because my workflow to develop and debug is very clunky. In ...
0
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1answer
141 views

magit commit does not permit adding a gpg signature

I am failing to run gpg to sign commits, after doing so successfully before an upgrade to Mojave and an upgrade to Emacs. (I am not sure when I lost the ability to sign files in the past year.) When ...
1
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0answers
34 views

Debugger breaks with Args out of range: “”, 0

When forge is installed on a system with no compiler, I sometimes get this error which breaks magit. I'd like to figure out the traceback for this error so I can add some proper error handling, ...
1
vote
1answer
67 views

How to navigate stack frames in Emacs debugger?

I'm trying to debug the infamous Unrecognized entry in undo list undo-tree-canary, and after having Emacs debugger triggered on error, I want to move back and forth between stack frames and to examine ...
0
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0answers
38 views

How to file bug report about frozen emacs

Here what I have MacOS Emacs started with $(which emacs) --daemon using emacs mostly in terminal with alias emacs='emacsclient -nw' and then emacs ~/foo.txt to edit files So right now my emacs ...
1
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1answer
41 views

How to debug frequent emacs feezes

I have a complex Emacs setup. I love it, except for that fact that it freezes a couple of times a day for me. I have a few suspicion: I use you-complete-me for auto-completion in c++ and it may be ...
7
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3answers
117 views

Is it possible to edebug a lambda returned by a function?

For example, (defun create-function (number) `(lambda () (* ,number ,number))) (defalias 'square-two (create-function 2) "adds two") (square-two)
4
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0answers
217 views

Is there an ELISP decompiler?

I'm thinking of writing one so that when I get those horrible tracebacks from bytecode files, I can better see where I was at. Is there one already? Are there any other tools for showing an error ...
2
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1answer
137 views

Unable to load bookmarks list on emacs master

Whenever I try to execute bookmark-bmenu-list (which loads the bookmarks file), I get the following error: bmkp-multi-sort: Symbol’s function definition is void: bmkp-info-cp. I am running on emacs ...
5
votes
1answer
777 views

Debug pytests in emacs

I try to debug my pytest-cases like this: import pytest def test_something() ... ... pytest.set_trace() Then, i execute the tests by running elpy-test. The test starts to run and stops ...
3
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1answer
71 views

How to force `condition-case` to activate the debugger

Often times I need to debug code wrapped in the BODYFORM of condition-case; however, the debugger is suppressed even though I have debug-on-error set to t. The doc-string states that we can add debug ...
1
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1answer
175 views

Debugging — debugger-mode — how to highlight the culprit

Let us take an example such as (max 0 (/ 8 0)) -- the problem is the argument to / -- i.e., DIVISORS cannot be 0. The debugging output looks like this: Debugger entered--Lisp error: (arith-error) /...
2
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1answer
216 views

Emacs is hanging on almost every word I type. How to identify the problem?

So, that's it. I am writing a lot of LaTeX, and lately emacs is hanging (becoming unresponsive) on almost every word I type, and I have to press C-g to regain control. It started happening around 4 ...
1
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1answer
129 views

Debugging erratic error

The following error appears every other time that a .tex file is opened: Wrong number of arguments, setq, 3 Enabling toggle-debug-on-error gives this backtrace. How to go about debugging this? I've ...
4
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2answers
1k views

how to start daemon with `--debug-init` or equivalent debugger?

summary problem I'm trying to debug a problem that involves an Emacs config and daemon startup. But when I run emacs --daemon --debug-init from a console, the spew ends with Loading desktop from /...
3
votes
1answer
731 views

Autocompletion of a variable name while Python debugging

Suppose I want to debug Python script in Emacs. M-x pdb run pdb like this pdb script name.py. Next I'd like to examine a variable. I type p and first letters of a variable name, then press Tab and ...
3
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0answers
355 views

set breakpoint while in debugger?

Is it possible to set a breakpoint on an arbitrary line while already established in browser()? As a use-case: if I debug(myfunc) and while in Browse[2]> ... I realize that I need to jump forward ...
4
votes
1answer
162 views

Stack reflection in Emacs Lisp?

Are there reflection methods available in elisp to examine the stack without invoking the debugger? For example: Get the calling/callee function Get the function call stack Get the (longer) nested ...
2
votes
1answer
322 views

Signaling a breakpoint in Emacs Lisp

Many languages have a mechanism to signal an attached debugger to pause or break. For example in JavaScript this is done using the debugger keyword. In others like C# or Visual Basic the signal is ...
1
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1answer
615 views

Debug org-mode link to PDF displayed with PDF-Tools

Emacs 24.5 on openSuse Tumbleweed. *.org file with a link to a pdf: [[.\somefile.pdf::2][myfile p 2]] I'm using the PDF Tools to display a PDF in Emacs. What I expect is that page 2 of the PDF will ...