I do get the same result you do.  Hopefully, I'll have some time tomorrow to
look into the issue.  RIght now, though, my problem is not the nil, but the
error I reported in my previous email.

On Tue, Apr 13, 2010 at 8:57 PM, Eric Schulte <schulte.eric@gmail.com>wrote:

> So, for some reason the `org-mime-org-export' helper function is
> returning nil on your (and Eric's) machines.  Could you try evaluating
> (C-M-x) the following in your *scratch* buffer?
>
> (insert (org-mime-org-export "html" "- first
> - second
> - third" (make-temp-file "quick-test")))
>
> When I execute the above it inserts the following into the scratch
> buffer
>
> <ul>
> <li>
> first
> </li>
> <li>
> second
> </li>
> <li>
> third
> </li>
> </ul>
>
> If instead you get an error, or it inserts nil, then it means that our
> systems are somehow different with respect to that function, which is a
> slight alteration of `org-run-like-in-org-mode'.
>
> At that point you could try using something like
>
> (org-run-like-in-org-mode 'org-export-as-html)
>
> to export a non-html buffer to html, or you could also try starting up
> Emacs with the -Q option, then loading org-mime.el, opening an org-mode
> file, and calling org-mime-org-buffer-htmlize, and sending an email to
> yourself.
>
> Sorry I can't be of more help, I'm really mystified as to how this
> function could be returning nil.
>
> Best -- Eric
>
> Andrew Hyatt <ahyatt@gmail.com> writes:
>
> > Thanks for the response.  I upgraded, now I get a
> >
> > Debugger entered--Lisp error: (wrong-type-argument arrayp t)
> >  substring(t 33)
> >  (progn (insert org-mime-default-header) (insert body) (write-file
> tmp-file)
> > (org-load-modules-maybe) (unless org-local-vars (setq org-local-vars
> ...))
> > (substring (eval ...) (if ... ... 0)))
> >  (unwind-protect (progn (insert org-mime-default-header) (insert body)
> > (write-file tmp-file) (org-load-modules-maybe) (unless org-local-vars
> ...)
> > (substring ... ...)) (and (buffer-name temp-buffer) (kill-buffer
> > temp-buffer)))
> >  (save-current-buffer (set-buffer temp-buffer) (unwind-protect (progn ...
> > ... ... ... ... ...) (and ... ...)))
> >  (with-current-buffer temp-buffer (unwind-protect (progn ... ... ... ...
> ...
> > ...) (and ... ...)))
> >  (let ((temp-buffer ...)) (with-current-buffer temp-buffer
> (unwind-protect
> > ... ...)))
> >  (with-temp-buffer (insert org-mime-default-header) (insert body)
> > (write-file tmp-file) (org-load-modules-maybe) (unless org-local-vars
> (setq
> > org-local-vars ...)) (substring (eval ...) (if ... ... 0)))
> >  (save-excursion (with-temp-buffer (insert org-mime-default-header)
> (insert
> > body) (write-file tmp-file) (org-load-modules-maybe) (unless
> org-local-vars
> > ...) (substring ... ...)))
> >  org-mime-org-export("org" #("\nHTML test\n\n~foo~\n=bar=\n_baz_\n\n| 1 |
> 2
> > |\n| a | b |\n" 0 1 (fontified t) 1 11 (fontified t) 11 12 (fontified t)
> 12
> > 18 (fontified t) 18 24 (fontified t) 24 30 (fontified t) 30 31 (fontified
> t)
> > 31 40 (fontified t face (gnus-cite-1 message-cited-text)) 40 41
> (fontified
> > t) 41 50 (fontified t face (gnus-cite-1 message-cited-text)) 50 51
> > (fontified t)) "/tmp/mail2522ZvL")
> >  (let* ((region-p ...) (html-start ...) (html-end ...) (raw-body ...)
> > (tmp-file ...) (body ...) (org-export-skip-text-before-1st-heading nil)
> > (org-export-htmlize-output-type ...) (org-export-preserve-breaks
> > org-mime-preserve-breaks) (html-and-images ...) (html-images ...) (html
> > ...)) (delete-region html-start html-end) (save-excursion (goto-char
> > html-start) (insert ... ...)))
> >  org-mime-htmlize(nil)
> >  call-interactively(org-mime-htmlize record nil)
> >
> > I tried this with orgstruct-mode off and on, but it was the same error
> > either way.  Earlier, before I got the latest version, I tried with
> > orgstruct-mode on, and it successfull htmlized my mail. But, when I
> received
> > it, the mail only contained the word "nil".
> >
> > On Mon, Apr 12, 2010 at 1:22 PM, Eric Schulte <schulte.eric@gmail.com
> >wrote:
> >
> >> Hi Andrew,
> >>
> >> Thanks for the report.  My guess is that somehow the call to
> >> org-export-as-html is erroring out because some org-mode variables
> >> aren't being set, maybe you don't have orgstruct-mode as a minor-mode in
> >> your email composition -- not that it's required, but that could be the
> >> difference between our setups which is causing you to see the bug and
> >> not me.
> >>
> >> I've changed the `org-mime-org-export' so it more closely mimics the
> >> `org-run-like-in-org-mode' wrapping function, which should hopefully fix
> >> this problem.  Please let me know either way, and if the problem
> >> persists we can try to figure out exactly which variable isn't being
> >> initialized.
> >>
> >> Thanks for the report! -- Eric
> >>
> >> Andrew Hyatt <ahyatt@gmail.com> writes:
> >>
> >> > This looks great.  However, I get an error on my test mail:
> >> >
> >> > This is should be HTML mode.
> >> >
> >> > ~foo~
> >> > =bar=
> >> > _baz_
> >> >
> >> > | Table | A |
> >> > | 1     | 2 |
> >> >
> >> > On calling org-mime-htmlize
> >> >
> >> > Debugger entered--Lisp error: (wrong-type-argument stringp nil)
> >> >   string-match(nil #("This is should be HTML mode." 0 28 (fontified
> t)))
> >> >   byte-code("\304\211. \305\n \"\203A
> >> >   org-html-handle-time-stamps(#("This is should be HTML mode." 0 28
> >> > (fontified t)))
> >> >   byte-code(" \203.
> >> >   org-export-as-html(nil nil nil string t)
> >> >   (let nil (org-export-as-html nil nil nil (quote string) t))
> >> >   eval((let nil (org-export-as-html nil nil nil (quote string) t)))
> >> >   (progn (insert org-mime-default-header) (insert body) (write-file
> >> > tmp-file) (eval (list ... org-local-vars ...)))
> >> >   (unwind-protect (progn (insert org-mime-default-header) (insert
> body)
> >> > (write-file tmp-file) (eval ...)) (and (buffer-name temp-buffer)
> >> > (kill-buffer temp-buffer)))
> >> >   (save-current-buffer (set-buffer temp-buffer) (unwind-protect (progn
> >> ...
> >> > ... ... ...) (and ... ...)))
> >> >   (with-current-buffer temp-buffer (unwind-protect (progn ... ... ...
> >> ...)
> >> > (and ... ...)))
> >> >   (let ((temp-buffer ...)) (with-current-buffer temp-buffer
> >> (unwind-protect
> >> > ... ...)))
> >> >   (with-temp-buffer (insert org-mime-default-header) (insert body)
> >> > (write-file tmp-file) (eval (list ... org-local-vars ...)))
> >> >   (save-excursion (with-temp-buffer (insert org-mime-default-header)
> >> (insert
> >> > body) (write-file tmp-file) (eval ...)))
> >> >   org-mime-org-export("html" #("\nThis is should be HTML
> >> > mode.\n\n~foo~\n=bar=\n_baz_\n\n| Table | A |\n| 1     | 2 | \n\n--
> \n" 0
> >> 1
> >> > (fontified t) 1 42 (fontified t) 42 43 (fontified t) 43 44
> (article-type
> >> > emphasis fontified t) 44 47 (fontified t) 47 48 (article-type emphasis
> >> > fontified t) 48 50 (fontified t) 50 63 (fontified t face (gnus-cite-1
> >> > message-cited-text)) 63 64 (fontified t) 64 78 (fontified t face
> >> > (gnus-cite-1 message-cited-text)) 78 79 (fontified t rear-nonsticky t)
> 79
> >> 80
> >> > (fontified t) 80 84 (fontified t)) "/tmp/mail2522NRw")
> >> >   (org-mime-replace-images (org-mime-org-export "html" raw-body
> tmp-file)
> >> > tmp-file)
> >> >   (let* ((region-p ...) (html-start ...) (html-end ...) (raw-body ...)
> >> > (tmp-file ...) (body ...) (org-export-skip-text-before-1st-heading
> nil)
> >> > (org-export-htmlize-output-type ...) (org-export-preserve-breaks
> >> > org-mime-preserve-breaks) (html-and-images ...) (html-images ...)
> (html
> >> > ...)) (delete-region html-start html-end) (save-excursion (goto-char
> >> > html-start) (insert ... ...)))
> >> >   org-mime-htmlize(nil)
> >> >
> >> >
> >> > On Fri, Apr 9, 2010 at 12:41 PM, Eric Schulte <schulte.eric@gmail.com
> >> >wrote:
> >> >
> >> >> Announcing the addition of org-mime to the contrib directory of
> Org-mode
> >> >>
> >> >> this allows sending HTML email using org-mode including...
> >> >>
> >> >>
> >> >>    - *tables*   colname onecolname two  11 24 39
> >> >>    - *inline images* including latex equations [image: $f(n) = n +
> >> >>    \frac{1}{n} \int_{0}^{n}{d_x f(x) + f(n - x)}$] and the results of
> >> >>    ditaa blocks, etc…
> >> >>
> >> >> [image: blue.png]
> >> >>
> >> >>    - *blockquotes*
> >> >>
> >> >>    HTML e-mail is the use of a subset of HTML (often ill-defined) to
> >> >>    provide formatting and semantic markup capabilities in e-mail that
> >> are not
> >> >>    available with plain text. – wikipedia
> >> >>
> >> >>     - fontified *code blocks* (shown below)
> >> >>    - and *HTML character* conversion, like ∀ character c s.t. ∃ h ∈
> >> *HTML
> >> >>    characters* and c ≡ h, org-html-export of c results in h
> >> >>
> >> >>
> >> >>
> >> >> The original org-mode formatted plain text is included as a
> text/plain
> >> >> mime alternative to the generated html.
> >> >>
> >> >> Below find the org-mime export of the org-mime worg page which will
> be
> >> >> available at http://orgmode.org/worg/org-contrib/org-mime.php.
> >> >>
> >> >> Best -- Eric
> >> >>
> >> >> General
> >> >>
> >> >> org-mime can be used to send HTML email using Org-mode HTML export.
> >> >>
> >> >> This approximates a WYSiWYG HTML mail editor from within Emacs, and
> can
> >> be
> >> >> useful for sending tables, notified source code, and inline images in
> >> email.
> >> >>
> >> >>   How to use it
> >> >>  Setup
> >> >>
> >> >> org-mime exposes two functions
> >> >>  `org-mime-htmlize' can be called from within a mail composition
> buffer
> >> to
> >> >> export either the entire buffer or just the active region to html,
> and
> >> embed
> >> >> the results into the buffer as a text/html mime section.
> >> >>
> >> >> org-mime-htmlize is an interactive Lisp function in `org-mime.el'.
> >> >>
> >> >> (org-mime-htmlize ARG)
> >> >>
> >> >> Export a portion of an email body composed using `mml-mode' to
> >> >> html using `org-mode'.  If called with an active region only
> >> >> export that region, otherwise export the entire body.
> >> >>
> >> >>  `org-mime-org-buffer-htmlize' can be called from within an Org-mode
> >> >> buffer to export either the whole buffer or the narrowed subtree or
> >> active
> >> >> region to HTML, and open a new email buffer including the resulting
> HTML
> >> >> content as an embedded mime section.
> >> >>
> >> >> org-mime-org-buffer-htmlize is an interactive Lisp function in
> >> >> `org-mime.el'.
> >> >>
> >> >> (org-mime-org-buffer-htmlize)
> >> >>
> >> >> Export the current org-mode buffer to HTML using
> >> >> `org-export-as-html' and package the results into an email
> >> >> handling with appropriate MIME encoding.
> >> >>
> >> >>  The following key bindings are suggested, which bind the C-c M-o key
> >> >> sequence to the appropriate org-mime function in both email and
> Org-mode
> >> >> buffers.
> >> >>
> >> >> (add-hook 'message-mode-hook
> >> >>           (lambda ()
> >> >>             (local-set-key "\C-c\M-o" 'org-mime-htmlize)))
> >> >> (add-hook 'org-mode-hook
> >> >>           (lambda ()
> >> >>             (local-set-key "\C-c\M-o" 'org-mime-org-buffer-htmlize)))
> >> >>
> >> >>   CSS style customization
> >> >>
> >> >> Email clients will often strip all global CSS from email messages. In
> >> the
> >> >> case of web-based email readers this is essential in order to protect
> >> the
> >> >> CSS of the containing web site. To ensure that your CSS styles are
> >> rendered
> >> >> correctly they must be included in the actual body of the elements to
> >> which
> >> >> they apply.
> >> >>
> >> >> The `org-mime-html-hook' allows for the insertion of these important
> CSS
> >> >> elements into the resulting HTML before mime encoding. The following
> are
> >> >> some possible uses of this hook.
> >> >>
> >> >>    - for those who use color themes with Dark backgrounds it is
> useful
> >> to
> >> >>    set a dark background for all exported code blocks and example
> >> regions. This
> >> >>    can be accomplished with the following
> >> >>
> >> >>    (add-hook 'org-mime-html-hook
> >> >>              (lambda ()
> >> >>                (org-mime-change-element-style
> >> >>                 "pre" (format "color: %s; background-color: %s;
> padding:
> >> 0.5em;"
> >> >>                               "#E6E1DC" "#232323"))))
> >> >>
> >> >>     - the following can be used to nicely offset block quotes in
> email
> >> >>    bodies
> >> >>
> >> >>    (add-hook 'org-mime-html-hook
> >> >>              (lambda ()
> >> >>                (org-mime-change-element-style
> >> >>                 "blockquote" "border-left: 2px solid gray;
> padding-left:
> >> 4px;")))
> >> >>
> >> >>
> >> >> For other customization options see the org-mime customization group.
> >> >>   Credits
> >> >>
> >> >> org-mime was developed by Eric Schulte with much-appreciated help and
> >> >> discussion from everyone on the "using orgmode to send html mail<
> >> http://thread.gmane.org/gmane.emacs.orgmode/23153>"
> >> >> thread especially David Maus.
> >> >>
> >> >> "Eric Schulte" <schulte.eric@gmail.com> writes:
> >> >>
> >> >> > Carsten Dominik <carsten.dominik@gmail.com> writes:
> >> >> >
> >> >> >> On Apr 5, 2010, at 7:39 AM, Eric Schulte wrote:
> >> >> >>
> >> >> >>> Hi,
> >> >> >>>
> >> >> >>> It is now possible to send HTML mail directly form an org-mode
> >> buffer.
> >> >> >>>
> >> >> >>> Calling `org-mime-org-buffer-htmlize' (could probably use a
> better
> >> >> >>> name)
> >> >> >>> from inside of an org-mode buffer will use `org-export-as-html'
> to
> >> >> >>> generate HTML of the buffer (respecting regions and subtree
> >> >> >>> narrowing),
> >> >> >>> and will then package the resulting HTML with all linked images
> into
> >> a
> >> >> >>> message buffer.
> >> >> >>>
> >> >> >>> As usual thanks to Carsten's thoughtfully organized functions and
> >> >> >>> control variables this was surprisingly easy to implement.
> >> >> >>>
> >> >> >>> Cheers -- Eric
> >> >> >>>
> >> >> >>> The code is still up at http://github.com/eschulte/org-mime
> >> >> >>
> >> >> >> CONTIRB?  yes, after the release.....
> >> >> >>
> >> >> >
> >> >> > Sounds great, I'm move this into contrib then. -- Eric
> >> >> >
> >> >> >>
> >> >> >> - Carsten
> >> >> >>
> >> >> >>>
> >> >> >>> "Eric Schulte" <schulte.eric@gmail.com> writes:
> >> >> >>>
> >> >> >>>> Dan Davison <davison@stats.ox.ac.uk> writes:
> >> >> >>>>
> >> >> >>>> [...]
> >> >> >>>>
> >> >> >>>>>
> >> >> >>>>> As I understand it the code you've written is designed to be
> >> >> >>>>> called in a
> >> >> >>>>> message-mode buffer with orgstruct-mode in force. Would it make
> >> >> >>>>> sense to
> >> >> >>>>> also include in your package a complementary function, that one
> >> >> >>>>> calls in
> >> >> >>>>> an org-mode buffer? I envisage this generating the HTML,
> forming
> >> the
> >> >> >>>>> multipart email contents, and then saving it to the kill ring,
> so
> >> >> >>>>> that
> >> >> >>>>> it can be pasted into an email.
> >> >> >>>>>
> >> >> >>>>> This function would have access to the directory-name and so
> >> >> >>>>> should be
> >> >> >>>>> able to resolve relative paths. Also, there might be some other
> >> >> >>>>> advantages -- for example when exporting just a region or
> subtree,
> >> >> >>>>> buffer-wide properties such as #+TITLE and #+AUTHOR are picked
> up
> >> >> >>>>> by the
> >> >> >>>>> org exporter and packaged into the HTML.
> >> >> >>>>>
> >> >> >>>>> In other words, can I use your machinery to package up the HTML
> >> >> >>>>> generated by Org's C-e dispatcher into an
> >> appropriately-constructed
> >> >> >>>>> email?
> >> >> >>>>>
> >> >> >>>>
> >> >> >>>> Hi Dan,
> >> >> >>>>
> >> >> >>>> That sounds like a good idea, I've added it to a fledgling task
> >> list
> >> >> >>>> packaged in the README at [1].  I'd say there are two options.
> >> >> >>>>
> >> >> >>>> 1) which you mentioned saving the entire exported content to the
> >> >> >>>>   kill-ring.  One problem here is that everything is still text
> and
> >> >> >>>>   pastable only *before* the mime export process, which means
> that
> >> >> >>>>   linked images wouldn't resolve after pasting into the email
> >> client.
> >> >> >>>>
> >> >> >>>> 2) having the function generate a new mail buffer containing the
> >> >> >>>>   exported content.  This buffer would need to have it's
> >> >> >>>>   `buffer-file-name' set, for images to resolve during export.
>  I'm
> >> >> >>>> not
> >> >> >>>>   sure how this should best work.
> >> >> >>>>
> >> >> >>>> Thanks -- Eric
> >> >> >>>>
> >> >> >>>> Footnotes:
> >> >> >>>> [1]  http://github.com/eschulte/org-mime
> >> >> >>>
> >> >> >>>
> >> >> >>> _______________________________________________
> >> >> >>> Emacs-orgmode mailing list
> >> >> >>> Please use `Reply All' to send replies to the list.
> >> >> >>> Emacs-orgmode@gnu.org
> >> >> >>> http://lists.gnu.org/mailman/listinfo/emacs-orgmode
> >> >> >>
> >> >> >> - Carsten
> >> >>
> >> >> _______________________________________________
> >> >> Emacs-orgmode mailing list
> >> >> Please use `Reply All' to send replies to the list.
> >> >> Emacs-orgmode@gnu.org
> >> >> http://lists.gnu.org/mailman/listinfo/emacs-orgmode
> >> >>
> >> >>
> >>
>