Re: Async Python src block behavior with :dir header property

[Jack Kamm]

Ihor Radchenko <yantar92@posteo.net> writes:

> [ CCing ob-python maintainer ]
>
> Nasser Alkmim <nasser.alkmim@gmail.com> writes:
>
>> Here is a clearer description of the unwanted behavior:
>>
>> 1. emacs -Q ~/Desktop/testasync.org
>>
>> Then evaluate (require 'ob-python) and paste this source block:
>>
>> #+begin_src python :dir otherdir :async yes :session pysession :return 
>> figname :results file value :mkdirp yes
>> import matplotlib.pyplot as plt
>> plt.figure(figsize=(1, 1))
>> plt.plot([1, 2])
>> figname = 'fig.svg'
>> plt.savefig(figname)
>> #+end_src
>>
>> Execute the source block, which results in 
>>
>> #+RESULTS:
>> [[file:fig.svg]]
>
> I don't even see this.
> Confirmed.

Does the attached patch fix the issue?

It seems the problem is with async sessions generally (not just
ob-python), and happens because `org-babel-comint-async-filter' does not
set `default-directory' before calling `org-babel-insert-result', unlike
`org-babel-execute-src-block'.

>From 1430a27e4416d5e88094a64360015a6a2ae7315c Mon Sep 17 00:00:00 2001
From: Jack Kamm <jackkamm@gmail.com>
Date: Wed, 31 Jan 2024 20:06:00 -0800
Subject: [PATCH] ob-comint: Make file results from async sessions respect :dir
 header

* lisp/ob-comint.el (org-babel-comint-async-filter): Set
default-directory before calling `org-babel-insert-result'

https://list.orgmode.org/875xz9o4nj.fsf@localhost/T/#t
---
 lisp/ob-comint.el | 17 +++++++++++++++--
 1 file changed, 15 insertions(+), 2 deletions(-)

diff --git a/lisp/ob-comint.el b/lisp/ob-comint.el
index 7d258ea0e..ecce18a95 100644
--- a/lisp/ob-comint.el
+++ b/lisp/ob-comint.el
@@ -248,7 +248,14 @@ (defun org-babel-comint-async-filter (string)
                                 (let* ((info (org-babel-get-src-block-info))
                                        (params (nth 2 info))
                                        (result-params
-                                        (cdr (assq :result-params params))))
+                                        (cdr (assq :result-params params)))
+                                       (tmp-file (expand-file-name tmp-file))
+                                       (dir (cdr (assq :dir params)))
+                                       (default-directory
+                                        (if dir
+                                            (file-name-as-directory
+                                             (expand-file-name dir))
+                                          default-directory)))
                                   (org-babel-insert-result
                                    (funcall file-callback
                                             (nth
@@ -291,7 +298,13 @@ (defun org-babel-comint-async-filter (string)
                                    (let* ((info (org-babel-get-src-block-info))
                                           (params (nth 2 info))
                                           (result-params
-                                           (cdr (assq :result-params params))))
+                                           (cdr (assq :result-params params)))
+                                          (dir (cdr (assq :dir params)))
+                                          (default-directory
+                                           (if dir
+                                               (file-name-as-directory
+                                                (expand-file-name dir))
+                                             default-directory)))
                                     (org-babel-insert-result
                                       res-str result-params info))
                                   t))))
-- 
2.43.0