Re: [BABEL] BUG - error on tangling - disappears when changing the filename

[Rainer M Krug <Rainer@krugs.de>]

OK - narrowed it down to a post tangle hook which I need for proper
debugging of R (jumping to source line in org file and not tangled R file):

,----
| #+begin_src emacs-lisp
| (defvar org-babel-tangled-file nil
|   "If non-nill, current file was tangled with org-babel-tangle")
| (put 'org-babel-tangled-file 'safe-local-variable 'booleanp)
| 
| (defun org-babel-mark-file-as-tangled ()
|   (when  (string-match "[.]R" (buffer-file-name))
|     (add-file-local-variable 'org-babel-tangled-file t)
|     (add-file-local-variable 'buffer-read-only t)
|     (add-file-local-variable 'eval: '(auto-revert-mode))
|     (basic-save-buffer)))
| 
| (add-hook 'org-babel-post-tangle-hook 'org-babel-mark-file-as-tangled)
| #+end_src
`----

The question is now why is this function org-babel-mark-file-as-tangled
receives NULL as a buffer-file-name? 
I can't remove the "when" as I am also tangling some files which do not
have any comment characters (DESCRIPTION file in R packages).

Any suggestions welcome,

Rainer


Rainer M Krug <Rainer@krugs.de> writes:

> Forgot: tried with 8.2 stable release and with version from git - both
> the same.
>
> Rainer M Krug <Rainer@krugs.de> writes:
>
>> Hi
>>
>> I have a strange error when tangling.
>>
>> I have a large org file with several code blocks tangling in about
>> 20 R files and one bash file. Usually tangling works perfectly, but
>> sometimes one code block does not tangle a code block to a file. These
>> are different blocks. When I change the name of the fiole to be tangled
>> to, it works again. After d=some time, I can rename it again and it
>> works again.
>>
>> The last time it happened, I was debugging the function. But even when
>> deleting all the content of the code block, the problem persists.
>>
>> This persists over restarts of org.
>>
>> The code block looks as follow:
>>
>> ,----
>> | *** dispProb2D (./R/dispProd2D.R) 
>> | :PROPERTIES:
>> | :tangle:   ./R/dispProd2D.R
>> | :comments: yes
>> | :no-expand: TRUE
>> | :END: 
>> | #+begin_src R
>> | cat(5)
>> | #+end_src  
>> `----
>>
>> In the original version, there is obviously code in it, but the error
>> occurs even in the empty block. I just renamed the block, and it is
>> working again.
>>
>> Any idea what is causing this?
>>
>> Please find the backtrace below.
>>
>> Cheers,
>>
>> Rainer
>>
>> ,----
>> | ebugger entered--Lisp error: (wrong-type-argument stringp nil)
>> |   set-buffer(nil)
>> |   (save-current-buffer (set-buffer (get-file-buffer file)) (revert-buffer t t t))
>> |   org-babel-find-file-noselect-refresh("./R/dispProd2D.R")
>> |   (let* ((temp-path file) (visited-p (get-file-buffer temp-path))
>> | temp-result temp-file) (org-babel-find-file-noselect-refresh
>> | temp-path) (setq temp-file (get-file-buffer temp-path))
>> | (save-current-buffer (set-buffer temp-file) (setq temp-result (progn
>> | (run-hooks (quote org-babel-post-tangle-hook))))) (if visited-p nil
>> | (kill-buffer temp-file)) temp-result)
>> |   (lambda (file) (let* ((temp-path file) (visited-p (get-file-buffer
>> | temp-path)) temp-result temp-file)
>> | (org-babel-find-file-noselect-refresh temp-path) (setq temp-file
>> | (get-file-buffer temp-path)) (save-current-buffer (set-buffer
>> | temp-file) (setq temp-result (progn (run-hooks (quote
>> | org-babel-post-tangle-hook))))) (if visited-p nil (kill-buffer
>> | temp-file)) temp-result))("./R/dispProd2D.R")
>> |   mapc((lambda (file) (let* ((temp-path file) (visited-p
>> | (get-file-buffer temp-path)) temp-result temp-file)
>> | (org-babel-find-file-noselect-refresh temp-path) (setq temp-file
>> | (get-file-buffer temp-path)) (save-current-buffer (set-buffer
>> | temp-file) (setq temp-result (progn (run-hooks (quote
>> | org-babel-post-tangle-hook))))) (if visited-p nil (kill-buffer
>> | temp-file)) temp-result)) ("postTangleScript.sh" "./.gitignore"
>> | "./DESCRIPTION" "./.Rbuildignore" "./R/parmsFire.R"
>> | "./R/parmsPinus.R" "./R/parmsAcacia.R" "./R/parmsRubus.R"
>> | "./R/parmsBudget.R" "./R/parameter.R" "./R/endYear.R"
>> | "./R/germEst.R" "./R/seedDispersal.R" "./R/seedProduction.R"
>> | "./R/fireAliens.R" "./R/clearAliens.R" "./R/prioritisation.R"
>> | "./R/beginYear.R" "./R/main.R" "./R/cumulativeDc.R"
>> | "./R/dcToIndLayer.R" "./R/competition.R" "./R/dispProd2D.R"
>> | "./R/initfun.R" "./R/newInDrak.R" "./R/resetOptions.R" "./R/stats.R"
>> | "./R/layerIO.R" "./R/layerNames.R" "./R/onLoad.R" "./NAMESPACE"
>> | "./R/package.R"))
>> |   (progn (mapc (function (lambda (file) (let* ((temp-path file)
>> | (visited-p (get-file-buffer temp-path)) temp-result temp-file)
>> | (org-babel-find-file-noselect-refresh temp-path) (setq temp-file
>> | (get-file-buffer temp-path)) (save-current-buffer (set-buffer
>> | temp-file) (setq temp-result (progn ...))) (if visited-p nil
>> | (kill-buffer temp-file)) temp-result))) (mapcar (function car)
>> | path-collector)))
>> |   (if org-babel-post-tangle-hook (progn (mapc (function (lambda
>> | (file) (let* ((temp-path file) (visited-p ...) temp-result
>> | temp-file) (org-babel-find-file-noselect-refresh temp-path) (setq
>> | temp-file (get-file-buffer temp-path)) (save-current-buffer
>> | (set-buffer temp-file) (setq temp-result ...)) (if visited-p nil
>> | (kill-buffer temp-file)) temp-result))) (mapcar (function car)
>> | path-collector))))
>> |   (let ((block-counter 0) (org-babel-default-header-args (if
>> | target-file (org-babel-merge-params org-babel-default-header-args
>> | (list (cons :tangle target-file))) org-babel-default-header-args))
>> | (tangle-file (if (equal arg (quote (16))) (progn (or (cdr (assoc
>> | :tangle ...)) (user-error "Point is not in a source code block")))))
>> | path-collector) (mapc (function (lambda (by-lang) (let* ((lang (car
>> | by-lang)) (specs (cdr by-lang)) (ext (or ... lang)) (lang-f (intern
>> | ...)) she-banged) (mapc (function (lambda ... ...)) specs)))) (if
>> | (equal arg (quote (4))) (org-babel-tangle-single-block 1 t)
>> | (org-babel-tangle-collect-blocks lang tangle-file))) (message
>> | "Tangled %d code block%s from %s" block-counter (if (= block-counter
>> | 1) "" "s") (file-name-nondirectory (buffer-file-name (or
>> | (buffer-base-buffer) (current-buffer))))) (if
>> | org-babel-post-tangle-hook (progn (mapc (function (lambda (file)
>> | (let* (... ... temp-result temp-file)
>> | (org-babel-find-file-noselect-refresh temp-path) (setq temp-file
>> | ...) (save-current-buffer ... ...) (if visited-p nil ...)
>> | temp-result))) (mapcar (function car) path-collector)))) (mapc
>> | (function (lambda (pair) (if (cdr pair) (progn (set-file-modes (car
>> | pair) (cdr pair)))))) path-collector) (mapcar (function car)
>> | path-collector))
>> |   (save-excursion (let ((block-counter 0)
>> | (org-babel-default-header-args (if target-file
>> | (org-babel-merge-params org-babel-default-header-args (list (cons
>> | :tangle target-file))) org-babel-default-header-args)) (tangle-file
>> | (if (equal arg (quote (16))) (progn (or (cdr ...) (user-error "Point
>> | is not in a source code block"))))) path-collector) (mapc (function
>> | (lambda (by-lang) (let* ((lang ...) (specs ...) (ext ...) (lang-f
>> | ...) she-banged) (mapc (function ...) specs)))) (if (equal arg
>> | (quote (4))) (org-babel-tangle-single-block 1 t)
>> | (org-babel-tangle-collect-blocks lang tangle-file))) (message
>> | "Tangled %d code block%s from %s" block-counter (if (= block-counter
>> | 1) "" "s") (file-name-nondirectory (buffer-file-name (or
>> | (buffer-base-buffer) (current-buffer))))) (if
>> | org-babel-post-tangle-hook (progn (mapc (function (lambda (file)
>> | (let* ... ... ... ... ... temp-result))) (mapcar (function car)
>> | path-collector)))) (mapc (function (lambda (pair) (if (cdr pair)
>> | (progn (set-file-modes ... ...))))) path-collector) (mapcar
>> | (function car) path-collector)))
>> |   (save-restriction (if (equal arg (quote (4))) (progn (let ((head
>> | (org-babel-where-is-src-block-head))) (if head (goto-char head)
>> | (user-error "Point is not in a source code block")))))
>> | (save-excursion (let ((block-counter 0)
>> | (org-babel-default-header-args (if target-file
>> | (org-babel-merge-params org-babel-default-header-args (list ...))
>> | org-babel-default-header-args)) (tangle-file (if (equal arg (quote
>> | ...)) (progn (or ... ...)))) path-collector) (mapc (function (lambda
>> | (by-lang) (let* (... ... ... ... she-banged) (mapc ... specs)))) (if
>> | (equal arg (quote (4))) (org-babel-tangle-single-block 1 t)
>> | (org-babel-tangle-collect-blocks lang tangle-file))) (message
>> | "Tangled %d code block%s from %s" block-counter (if (= block-counter
>> | 1) "" "s") (file-name-nondirectory (buffer-file-name (or
>> | (buffer-base-buffer) (current-buffer))))) (if
>> | org-babel-post-tangle-hook (progn (mapc (function (lambda ... ...))
>> | (mapcar (function car) path-collector)))) (mapc (function (lambda
>> | (pair) (if (cdr pair) (progn ...)))) path-collector) (mapcar
>> | (function car) path-collector))))
>> |   org-babel-tangle(nil)
>> |   call-interactively(org-babel-tangle nil nil)
>> `----
> <#secure method=pgpmime mode=sign>
>
<#secure method=pgpmime mode=sign>

-- 
Rainer M. Krug

email: RMKrug<at>gmail<dot>com