Start a sub-section for process utilities

README.org

@@ -449,6 +449,28 @@ by experienced Emacs users.
           ;; Finally, switch to that window.
           (other-window 1)))))
 #+end_src
+
+** [[info:elisp#Processes][Processes (info)]]
+:PROPERTIES:
+:CUSTOM_ID: sec:processes
+:END:
+
+Listing [[lst:process-utilities]] defines a function to run a (command-line) program
+with arguments and to obtain a list with its numeric exit status as well as its
+output to =stdout=.
+
+#+caption[Process utilities]:
+#+caption: Process utilities.
+#+name: lst:process-utilities
+#+begin_src emacs-lisp
+  ;; https://gitlab.com/howardabrams/spacemacs.d/blob/master/layers/ha-org/funcs.el#L418
+  (defun shell-command-with-exit-code (program &rest args)
+    "Run PROGRAM with ARGS and return exit-code and output in a list."
+    (with-temp-buffer
+      (list (apply 'call-process program nil (current-buffer) nil args)
+            (buffer-string))))
+#+end_src
+
 * [[info:emacs#Package Installation][Install the selected packages (info)]]
 :PROPERTIES:
 :CUSTOM_ID: sec:install-selected-packages