From: "Berry, Charles" via "General discussions about Org-mode." <emacs-orgmode@gnu.org>
To: James Powell <powellj@pdx.edu>
Cc: "emacs-orgmode@gnu.org" <emacs-orgmode@gnu.org>
Subject: Re: bug: Error handling in source blocks.
Date: Tue, 10 Aug 2021 19:42:07 +0000 [thread overview]
Message-ID: <CB239350-588D-4686-B926-55853A01F589@health.ucsd.edu> (raw)
In-Reply-To: <3ac06f2a-c14b-593f-a6e2-8e1c85c19436@pdx.edu>
> On Aug 9, 2021, at 9:13 PM, James Powell <powellj@pdx.edu> wrote:
>
> Error handling is important and hard to get right. Me, I prefer to
> treat every warning as an error (-Werror in gcc, "options(warn=2)" in
> R, etc). I want the system to grind to a halt at the least sign of
> trouble.
If the effect of an error is to return no result (as in your example), you can use a :post header-arg to check for a nil value in `*this*' and issue a user-error.
Example:
#+name: check-res
#+begin_src emacs-lisp
(or *this* (error "nil result"))
#+end_src
#+begin_src R :exports both :post check-res()
x <- fffff838293483$x8483848
#+end_src
See (info "(org) Results of Evaluation") and scroll to `post-processing' for details on the :post header.
The user-error halts export.
HTH,
Chuck
next prev parent reply other threads:[~2021-08-10 19:43 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-10 4:13 bug: Error handling in source blocks James Powell
2021-08-10 19:42 ` Berry, Charles via General discussions about Org-mode. [this message]
2021-08-10 20:30 ` Tim Cross
2021-08-10 23:14 ` Tom Gillespie
2021-08-11 6:23 ` tomas
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
List information: https://www.orgmode.org/
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=CB239350-588D-4686-B926-55853A01F589@health.ucsd.edu \
--to=emacs-orgmode@gnu.org \
--cc=ccberry@health.ucsd.edu \
--cc=powellj@pdx.edu \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
Code repositories for project(s) associated with this public inbox
https://git.savannah.gnu.org/cgit/emacs/org-mode.git
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).