Questions tagged [error-handling]
The error-handling tag has no usage guidance.
2
votes
2answers
78 views
Orgmode table error - shrunk field?
I'm very new to Emacs and Org mode, so I'm basically fumbling around. I'm getting an alarm bell ding whenever I type in an table in an *.org file. A message says "invalid function: org-table-with-...
0
votes
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 ...
0
votes
0answers
28 views
“No such file or directory, bind-key” after installing use-package [duplicate]
I'm using Emacs on Windows 10. I want to override key bindings, so after reading How to override major mode bindings, I installed use-package with the built-in package manager (via M-x package-install ...
0
votes
1answer
25 views
How Can I Prevent make-process from failing if the default-directory doesn't exist?
Usually, when you open a file, Emacs prompts you to run M-x make-directory RET RET if the directory doesn't exist.
However, after writing my own advice, I realized that opening files in directories ...
1
vote
1answer
56 views
How can I disable the “<C-lwindow> is undefined” error?
I use Windows 10's virtual desktop feature. The hotkey for switching between virtual desktops is Ctrl-Win-Left / Ctrl-Win-Right. When Emacs is focused and I want to switch dekstops, I get an error ...
1
vote
1answer
153 views
Running emacs client: how do you know if the init files had errors loading
I use emacs 25, in nw mode, with "alias emacs='emacsclient -nw'"
When I add something to my personal.el, I do
brew services restart emacs
My issue is, if I make a big blunder inside my personal.el ...
0
votes
0answers
19 views
Flycheck error display not formatted. It Displays XML
Can someone tell me why my error output does not parse xml and looks like this? ( see: https://i.imgur.com/W7ISh4C.png )
Ubuntu(v16.04 xenial)
GNU Emacs 25.3.1
flycheck 31
js2-mode 20170721
eslint v4....
0
votes
0answers
154 views
toggle-debug-on-error only works for the first error, how can i fix this?
when I enable debug on error it works perfectly the first time.
when I go and fix my error and rerun my function debug on error no longer triggers for new errors.
Is there a way to enable it so ...
3
votes
1answer
33 views
Exiting from outer calling functions on error
Consider the following:
(defun my-divide-by-0()
(condition-case nil
(/ 1 0)
(error (progn (message "Could not evaluate: 1/0") nil))))
(defun my-test()
(interactive)
(my-divide-by-0)
...
0
votes
1answer
69 views
redirect stderr to a file in call-process-region
I have been reading the documentation for call-process-region here and I am trying to redirect stderr to a file. from the the documentation, this looks correct
(call-process-region beg end perltidy-...
1
vote
2answers
79 views
Is the unwind-protect's clean form always evaluated?
I have this loop:
(catch 'QUIT
(while
(search-forward-regexp "\\([^\n\\]\\(?:\\\\\\\\\\)*\\|^\\(?:\\\\\\\\\\)+\\)%.*\n"
nil t)
(save-excursion
(let ((b (make-...
3
votes
1answer
44 views
When I (byte-compile-file “my-package.el”), can I treat warnings as errors?
As part of CI testing, I'm byte-compiling package files to make sure there are no errors. I'd like to take this a step further and ensure there are no warnings, either (like 'function not known to be ...
0
votes
0answers
78 views
On Windows 8.1, in Emacs Ghostscript doesn't work, while on commandline it does
Edited question of August 2017:
After a long search I found the reason, why a wonderful software called pdfsizeopt (for my question from April 2017 see below) does not work, when called from Emacs, ...
2
votes
1answer
889 views
Symbol's function definition is void: insert-string
;; Specify the startup banner. Default value is `official', it displays
;; the official spacemacs logo. An integer value is the index of text
;; banner, `random' chooses a random text banner in `core/...
1
vote
1answer
158 views
What is the difference between the error handler in condition-case and the error function
I am wondering the semantic of the error function. For condition-case, the Elisp manual says:
The arguments after the protected form are handlers. Each handler
lists one or more condition names (...
9
votes
0answers
387 views
Get backtrace from error programmatically
If an error is signalled in Emacs Lisp code, and debug-on-error is t, I get a backtrace buffer that makes it easy to figure out where the error occurred. However, for errors that occur while ...
2
votes
1answer
81 views
Taking action depending on the presence of particular message in the echo area
I have my proper function to run latex, say my-tex.
Sometimes one should run latex two times to get references right. A message like below in the echo area appears to tell this. How to identify ...
3
votes
1answer
34 views
Standard way of reporting user errors to user?
I am writing an emacs package which provides some commands to the user. The user can run things like M-x foobar and M-x eggsspam. However, some of these commands can fail. As an example, without ...
2
votes
1answer
32 views
Which function should I advise to do something when a user-error is unhandled?
I need to advise emacs to do something when any error dings to the user. I can't find any documentation on which function I actually need to advise.
Which function do I need to advise to do ...
2
votes
1answer
32 views
Catch invalid calc expression
Inspired by this blog I wrote a function which replaces arithmetic expressions between two $ symbols with the mathematical result inline (and deletes the $ symbols). How can I modify this such that it ...
31
votes
2answers
5k views
What do I do when Emacs is frozen? [duplicate]
What should I do when Emacs stops responding?
My current "emacs-is-frozen" protocol looks like this:
Spam C-g (it sometimes works)
Wait for a while.
pkill -9 emacs
What alternate steps could I try ...
2
votes
1answer
103 views
Break on all errors in edebug
How can I make Emacs break on an error, even if the error is being handled somewhere?
In my current scenario, the setup of a major mode is modifying the buffer and I want to find out why (and then ...
0
votes
2answers
148 views
autoload list of packages in Emacs 25.0.92
According to emacs.SE answer I am trying to make Emacs (version 25.0.92) autoload packages if they are not already installed on my computer. At my .emacs file now I have only:
(package-initialize)
(...
5
votes
1answer
120 views
How to abort saving in a before-save-hook function?
If, in a function run from before-save-hook, I want to abort the saving of a file, so that the file is not saved and the user is signaled, how can I do that? Is it possible (without rebinding C-xC-s ...
0
votes
1answer
483 views
Cryptic startup error messages
I just started out on emacs so this might have a really simple answer. I'm getting an error message on startup and have no idea what it means. The debug message doesn't help much either.
What do ...
4
votes
3answers
329 views
Finding frames by name
I'm trying to write a little compilation monitor frame that gets compilation updates written to it without the overhead of seeing absolutely everything going on in the compile. I've been working with ...
4
votes
1answer
253 views
How to condition-case Lisp nesting exceeds `max-lisp-eval-depth'?
I'd like to catch too big recursive call nesting in elisp, like this:
(condition-case nil
(potentially-too-recursive-function)
(xxx (message "Gave up, using defaults")))
What is the symbol in ...
1
vote
0answers
693 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 ...
8
votes
2answers
264 views
Rethrowing an error in Emacs Lisp
I need to call a function and perform a cleanup only if the function fails, and then relaunch the error. Here is the pseudo-code:
(condition-case err
(call-function)
(error
(cleanup)
;; ...
3
votes
3answers
157 views
How to call another function, if one function gives an error message
Suppose I call a function which is named as foo.
Sometimes that function foo will give a message such as "Example of error message". If that is the case, then something else should be executed.
...
2
votes
1answer
49 views
Invoke function on message
The debug-on-message variable tells Emacs to start the debugger when a matching message is displayed. How can I get Emacs to invoke my own function when a matching message is displayed?
My motivation ...
4
votes
1answer
505 views
Capturing stderr of subprocesses
I'm trying to capture stderr separately from stdout for a (synchronous) process run from emacs. I've found one way of doing it based on some code copied from emacs' shell-command function (I don't ...
3
votes
1answer
67 views
Perform function until it returns user-error
I want to define a function org-move-subtree-top that calls org-move-subtree-up until it returns a user-error (in this case "Cannot move past superior level or buffer limit"). How can I do this in ...
15
votes
3answers
3k views
Show line number on error
Say that emacs throws some error that I don't understand. Or maybe the error says "Symbol's value as variable is void: modes", but there are many occurrences of the symbol modes in my code, so I need ...
2
votes
1answer
135 views
How do I catch signals?
After reading the documentation, here's what I've tried:
(condition-case err
(signal 'my-error 'my-data)
(my-error (message "data: %S" err)))
Evaluating this form still throws the signal, ...
2
votes
1answer
284 views
define-error for older Emacs?
I'm using define-error to throw custom errors.
But it looks like this function wasn't yet implemented in emacs-24.3, for instance.
It still seems to work for emacs-24.3 if I write this:
(when (...
4
votes
3answers
1k views
File mode specification error: How to find syntax problem: Missing :END: line in org-mode properties?
When I launch my emacs software (Aquamacs.app) I see a message
File mode specification error: (error ":END: line missing at position 23740")
Unfortunately, I do not know in which file this problem ...
2
votes
1answer
85 views
How does one define a widget of type editable-list with validation?
I create my widget with the following code:
(widget-create 'editable-list
:entry-format "%i %d %v"
:value '("")
'(editable-field
...
0
votes
1answer
290 views
Error in post-command-hook during org-agenda-todo
Ever since upgrading to emacs 24.4.1, when I set something as 'done' from the agenda, I frequently get the error:
Error in post-command-hook (org-add-log-note): (error "Variable binding depth exceeds ...
1
vote
1answer
382 views
How to prevent Emacs from opening error buffer
I got someone ask this question:
How can I prevent errors that should really just be a bell or flashing
screen not open a window with an error?
3
votes
2answers
722 views
Emacs flickers when I run certain commands (gif screencast included)
After I did an overhaul of my .emacs file yesterday (adding/removing packages, organizing, etc.), I'm left with an annoying screen flicker. It happens when I move the cursor to the edge of the buffer ...
17
votes
3answers
826 views
How to gracefully handle errors in init file
I would like a way to catch errors when running my init file, and then handle them gracefully. A lot of my most important customizations and keybindings show up at the end of my init file to make sure ...
