fixed problem with new ruby sessions sometimes not initializing

lisp/langs/org-babel-ruby.el

@@ -85,7 +85,11 @@ Emacs-lisp table, otherwise return the results as a string."
 (defun org-babel-ruby-initiate-session (&optional session)
   "If there is not a current inferior-process-buffer in SESSION
 then create.  Return the initialized session."
-  (save-window-excursion (run-ruby nil session) (current-buffer)))
+  (let ((session-buffer (save-window-excursion (run-ruby nil session) (current-buffer))))
+    (if (org-babel-comint-buffer-livep session-buffer)
+        session-buffer
+      (sit-for .5)
+      (org-babel-ruby-initiate-session session))))
 
 (defvar org-babel-ruby-last-value-eval "_"
   "When evaluated by Ruby this returns the return value of the last statement.")

org-babel.org

@@ -1718,10 +1718,7 @@ This could probably be added to [[file:lisp/org-babel-script.el][org-babel-scrip
 (see [[* file result types][file result types]])
 
 
-* Bugs [12/16]
-** TODO ruby fails on first call to non-default session
-
-
+* Bugs [13/16]
 ** TODO non-orgtbl formatted lists
 for example
 
@@ -1753,6 +1750,12 @@ even a third"
    E.g. the pie chart example. Despite the save-window-excursion in
    org-babel-execute:R. (I never learned how to do this properly: org-R
    jumps all over the place...)
+** DONE ruby fails on first call to non-default session
+
+#+srcname: bug-new-session
+#+begin_src ruby :session is-new
+:patton
+#+end_src
 
 ** DONE when reading results from =#+resname= line
 
@@ -2013,50 +2016,50 @@ org-babel functionality.
 of these tests may fail.
 
 #+TBLNAME: org-babel-tests
-| functionality           | block                      | arg |    expected |     results | pass                             |
-|-------------------------+----------------------------+-----+-------------+-------------+----------------------------------|
-| basic evaluation        |                            |     |             |             | pass                             |
-|-------------------------+----------------------------+-----+-------------+-------------+----------------------------------|
-| emacs lisp              | basic-elisp                |     |           5 |           5 | pass                             |
-| shell                   | basic-shell                |     |           6 |           6 | pass                             |
-| ruby                    | basic-ruby                 |     |   org-babel |   org-babel | pass                             |
-| python                  | basic-python               |     | hello world | hello world | pass                             |
-| R                       | basic-R                    |     |          13 |          13 | pass                             |
-|-------------------------+----------------------------+-----+-------------+-------------+----------------------------------|
-| tables                  |                            |     |             |             | pass                             |
-|-------------------------+----------------------------+-----+-------------+-------------+----------------------------------|
-| emacs lisp              | table-elisp                |     |           3 |           3 | pass                             |
-| ruby                    | table-ruby                 |     |       1-2-3 |       1-2-3 | pass                             |
-| python                  | table-python               |     |           5 |           5 | pass                             |
-| R                       | table-R                    |     |         3.5 |         3.5 | pass                             |
-|-------------------------+----------------------------+-----+-------------+-------------+----------------------------------|
-| source block references |                            |     |             |             | pass                             |
-|-------------------------+----------------------------+-----+-------------+-------------+----------------------------------|
-| all languages           | chained-ref-last           |     |       Array |       Array | pass                             |
-|-------------------------+----------------------------+-----+-------------+-------------+----------------------------------|
-| source block functions  |                            |     |             |             | pass                             |
-|-------------------------+----------------------------+-----+-------------+-------------+----------------------------------|
-| emacs lisp              | defun-fibb                 |     |       fibbd |       fibbd | pass                             |
-| run over                | Fibonacci                  |   0 |           1 |           1 | pass                             |
-| a                       | Fibonacci                  |   1 |           1 |           1 | pass                             |
-| variety                 | Fibonacci                  |   2 |           2 |           2 | pass                             |
-| of                      | Fibonacci                  |   3 |           3 |           3 | pass                             |
-| different               | Fibonacci                  |   4 |           5 |           5 | pass                             |
-| arguments               | Fibonacci                  |   5 |           8 |           8 | pass                             |
-|-------------------------+----------------------------+-----+-------------+-------------+----------------------------------|
-| bugs and tasks          |                            |     |             |             | pass                             |
-|-------------------------+----------------------------+-----+-------------+-------------+----------------------------------|
-| simple ruby arrays      | ruby-array-test            |     |           3 |           3 | pass                             |
-| R number evaluation     | bug-R-number-evaluation    |     |           2 |           2 | pass                             |
-| multi-line ruby blocks  | multi-line-ruby-test       |     |           2 |           2 | pass                             |
-| forcing vector results  | test-forced-vector-results |     |       Array |       Array | pass                             |
-|-------------------------+----------------------------+-----+-------------+-------------+----------------------------------|
-| sessions                |                            |     |             |             | pass                             |
-|-------------------------+----------------------------+-----+-------------+-------------+----------------------------------|
-| set ruby session        | set-ruby-session-var       |     |        :set |      #ERROR | expected ":set" but was "#ERROR" |
-| get from ruby session   | get-ruby-session-var       |     |           3 |         nil | expected "3" but was "nil"       |
-| set python session      | set-python-session-var     |     |         set |         set | pass                             |
-| get from python session | get-python-session-var     |     |           4 |           4 | pass                             |
+| functionality           | block                      | arg |    expected |     results | pass |
+|-------------------------+----------------------------+-----+-------------+-------------+------|
+| basic evaluation        |                            |     |             |             | pass |
+|-------------------------+----------------------------+-----+-------------+-------------+------|
+| emacs lisp              | basic-elisp                |     |           5 |           5 | pass |
+| shell                   | basic-shell                |     |           6 |           6 | pass |
+| ruby                    | basic-ruby                 |     |   org-babel |   org-babel | pass |
+| python                  | basic-python               |     | hello world | hello world | pass |
+| R                       | basic-R                    |     |          13 |          13 | pass |
+|-------------------------+----------------------------+-----+-------------+-------------+------|
+| tables                  |                            |     |             |             | pass |
+|-------------------------+----------------------------+-----+-------------+-------------+------|
+| emacs lisp              | table-elisp                |     |           3 |           3 | pass |
+| ruby                    | table-ruby                 |     |       1-2-3 |       1-2-3 | pass |
+| python                  | table-python               |     |           5 |           5 | pass |
+| R                       | table-R                    |     |         3.5 |         3.5 | pass |
+|-------------------------+----------------------------+-----+-------------+-------------+------|
+| source block references |                            |     |             |             | pass |
+|-------------------------+----------------------------+-----+-------------+-------------+------|
+| all languages           | chained-ref-last           |     |       Array |       Array | pass |
+|-------------------------+----------------------------+-----+-------------+-------------+------|
+| source block functions  |                            |     |             |             | pass |
+|-------------------------+----------------------------+-----+-------------+-------------+------|
+| emacs lisp              | defun-fibb                 |     |       fibbd |       fibbd | pass |
+| run over                | Fibonacci                  |   0 |           1 |           1 | pass |
+| a                       | Fibonacci                  |   1 |           1 |           1 | pass |
+| variety                 | Fibonacci                  |   2 |           2 |           2 | pass |
+| of                      | Fibonacci                  |   3 |           3 |           3 | pass |
+| different               | Fibonacci                  |   4 |           5 |           5 | pass |
+| arguments               | Fibonacci                  |   5 |           8 |           8 | pass |
+|-------------------------+----------------------------+-----+-------------+-------------+------|
+| bugs and tasks          |                            |     |             |             | pass |
+|-------------------------+----------------------------+-----+-------------+-------------+------|
+| simple ruby arrays      | ruby-array-test            |     |           3 |           3 | pass |
+| R number evaluation     | bug-R-number-evaluation    |     |           2 |           2 | pass |
+| multi-line ruby blocks  | multi-line-ruby-test       |     |           2 |           2 | pass |
+| forcing vector results  | test-forced-vector-results |     |       Array |       Array | pass |
+|-------------------------+----------------------------+-----+-------------+-------------+------|
+| sessions                |                            |     |             |             | pass |
+|-------------------------+----------------------------+-----+-------------+-------------+------|
+| set ruby session        | set-ruby-session-var       |     |        :set |        :set | pass |
+| get from ruby session   | get-ruby-session-var       |     |           3 |           3 | pass |
+| set python session      | set-python-session-var     |     |         set |         set | pass |
+| get from python session | get-python-session-var     |     |           4 |           4 | pass |
 #+TBLFM: $5='(if (= (length $3) 1) (progn (message (format "running %S" '(sbe $2 (n $3)))) (sbe $2 (n $3))) (sbe $2))::$6='(if (string= $4 $5) "pass" (format "expected %S but was %S" $4 $5))
 
 ** basic tests
@@ -2216,13 +2219,13 @@ triv.class.name
 ** sessions
 
 #+srcname: set-ruby-session-var
-#+begin_src ruby :session rb-testing
+#+begin_src ruby :session rb-new-testing :results silent
 var = [1, 2, 3]
 :set
 #+end_src
 
 #+srcname: get-ruby-session-var
-#+begin_src ruby :session rb-testing
+#+begin_src ruby :session rb-new-testing :results silent
 var.size
 #+end_src