Bug: Org-babel can't capture the output of rg/ag/pt with org-babel on OS X [9.2.6 (9.2.6-4-ge30905-elpaplus @ /Users/maxflander/.emacs.d/elpa/org-plus-contrib-20191014/)]

[Max Flander]

I'm trying to capture the output of rg but I'm getting no output (I'm getting 
the message "Code block produced no output" in the minibuffer.  

I've also tried ag and pt which don't work either. It works with grep but this 
is too slow for my use-case.

Example:

#+BEGIN_SRC shell
mkdir -p myproject
pushd myproject
echo "something" > something.txt
rg something
popd
#+END_SRC

#+RESULTS:

I've tried the solutions from these similar questions, but they're not working 
here:

* 
https://stackoverflow.com/questions/27304469/capturing-the-output-of-diff-with-org-babel
* 
https://stackoverflow.com/questions/12771642/capture-output-from-a-shell-command-with-babel-in-org-mode?noredirect=1&lq=1

Emacs  : GNU Emacs 26.3 (build 1, x86_64-apple-darwin18.5.0, NS appkit-1671.40 
Version 10.14.4 (Build 18E226))
of 2019-08-30
Package: Org mode version 9.2.6 (9.2.6-4-ge30905-elpaplus @ 
/Users/maxflander/.emacs.d/elpa/org-plus-contrib-20191014/)

current state:
==============
(setq
org-src-mode-hook '(org-src-babel-configure-edit-buffer 
org-src-mode-configure-edit-buffer)
org-metadown-hook '(org-babel-pop-to-session-maybe)
org-clock-out-hook '(org-clock-remove-empty-clock-drawer)
org-html-format-inlinetask-function 'org-html-format-inlinetask-default-function
org-odt-format-headline-function 'org-odt-format-headline-default-function
org-imenu-depth 8
org-ascii-format-inlinetask-function 'org-ascii-format-inlinetask-default
org-mode-hook '(org-indent-mode #[0 "\301\211\207" [imenu-create-index-function 
org-imenu-get-tree] 2]
                 #[0 "\300\301\302\303\304$\207" [add-hook 
change-major-mode-hook org-show-all append local] 5]
                 #[0 "\300\301\302\303\304$\207"
                   [add-hook change-major-mode-hook org-babel-show-result-all 
append local] 5]
                 org-babel-result-hide-spec org-babel-hide-all-hashes 
toc-org-enable org-bullets-mode
                 org-eldoc-load)
org-odt-format-drawer-function #[514 "\207" [] 3 "\n\n(fn NAME CONTENTS)"]
org-archive-hook '(org-attach-archive-delete-maybe)
org-confirm-elisp-link-function 'yes-or-no-p
org-startup-with-inline-images t
org-agenda-before-write-hook '(org-agenda-add-entry-text)
org-metaup-hook '(org-babel-load-in-session-maybe)
org-bibtex-headline-format-function #[257 "\300\236A\207" [:title] 3 "\n\n(fn 
ENTRY)"]
org-latex-format-drawer-function #[514 "\207" [] 3 "\n\n(fn _ CONTENTS)"]
org-babel-pre-tangle-hook '(save-buffer)
org-tab-first-hook '(org-babel-hide-result-toggle-maybe 
org-babel-header-arg-expand)
org-babel-load-languages '((shell . t))
org-ascii-format-drawer-function #[771 "\207" [] 4 "\n\n(fn NAME CONTENTS 
WIDTH)"]
org-src-lang-modes '(("arduino" . arduino) ("redis" . redis) ("php" . php) ("C" 
. c) ("C++" . c++)
                      ("asymptote" . asy) ("bash" . sh) ("beamer" . latex) 
("calc" . fundamental) ("cpp" . c++)
                      ("ditaa" . artist) ("dot" . fundamental) ("elisp" . 
emacs-lisp) ("ocaml" . tuareg)
                      ("screen" . shell-script) ("shell" . sh) ("sqlite" . sql))
org-occur-hook '(org-first-headline-recenter)
org-cycle-hook '(org-cycle-hide-archived-subtrees org-cycle-show-empty-lines
                  org-optimize-window-after-visibility-change)
org-speed-command-hook '(org-speed-command-activate 
org-babel-speed-command-activate)
org-odt-format-inlinetask-function 'org-odt-format-inlinetask-default-function
org-confirm-shell-link-function 'yes-or-no-p
org-link-parameters '(("id" :follow org-id-open) ("eww" :follow eww :store 
org-eww-store-link)
                       ("rmail" :follow org-rmail-open :store 
org-rmail-store-link)
                       ("mhe" :follow org-mhe-open :store org-mhe-store-link)
                       ("irc" :follow org-irc-visit :store org-irc-store-link 
:export org-irc-export)
                       ("info" :follow org-info-open :export org-info-export 
:store org-info-store-link)
                       ("gnus" :follow org-gnus-open :store org-gnus-store-link)
                       ("docview" :follow org-docview-open :export 
org-docview-export :store org-docview-store-link)
                       ("bibtex" :follow org-bibtex-open :store 
org-bibtex-store-link)
                       ("bbdb" :follow org-bbdb-open :export org-bbdb-export 
:complete org-bbdb-complete-link
                        :store org-bbdb-store-link)
                       ("w3m" :store org-w3m-store-link) ("file+sys") 
("file+emacs")
                       ("orgit-rev" :store orgit-rev-store :follow 
orgit-rev-open :export orgit-rev-export
                        :complete orgit-rev-complete-link)
                       ("orgit-log" :store orgit-log-store :follow 
orgit-log-open :export orgit-log-export
                        :complete orgit-log-complete-link)
                       ("orgit" :store orgit-status-store :follow 
orgit-status-open :export orgit-status-export
                        :complete orgit-status-complete-link)
                       ("doi" :follow org--open-doi-link) ("elisp" :follow 
org--open-elisp-link)
                       ("file" :complete org-file-complete-link)
                       ("ftp" :follow (lambda (path) (browse-url (concat "ftp:" 
path))))
                       ("help" :follow org--open-help-link)
                       ("http" :follow (lambda (path) (browse-url (concat 
"http:" path))))
                       ("https" :follow (lambda (path) (browse-url (concat 
"https:" path))))
                       ("mailto" :follow (lambda (path) (browse-url (concat 
"mailto:"; path))))
                       ("news" :follow (lambda (path) (browse-url (concat 
"news:"; path))))
                       ("shell" :follow org--open-shell-link))
org-latex-format-headline-function 'org-latex-format-headline-default-function
org-link-translation-function 'toc-org-unhrefify
org-latex-format-inlinetask-function 
'org-latex-format-inlinetask-default-function
org-html-format-drawer-function #[514 "\207" [] 3 "\n\n(fn NAME CONTENTS)"]
org-image-actual-width 400
org-html-format-headline-function 'org-html-format-headline-default-function
)