Re: Treat article with external script

[Helmut Waitzmann Anti-Spam-Ticket . b . qc3c]

Breanndán Ó Nualláin <o@uva.nl>:

> I'd like to be able to do article washing by running the article 
> through an external python script. Is there an easy way to do 
> this?


You could define a function:  


  (defun my-gnus-article-wash nil
    "Invoke the program '(car my-gnus-article-wash)' on the current buffer.
  If the variable 'my-gnus-article-wash' is a non-nil list of a
  program name and positional parameters, run it as a filter on
  the current buffer's contents."
    (interactive)
    (if my-gnus-article-wash
      (apply
        (function call-process-region)
        (point-min)
        (point-max)
        (car my-gnus-article-wash)
        t
        t
        nil
        (cdr my-gnus-article-wash))))


… and a variable:  


  (defvar my-gnus-article-wash nil
    "*invocation list to be executed on contents of the article buffer.
  If non-nil, is a list containing an executable file name and argv1
  ... argvn invocation arguments to execute on the contents of
  the article buffer and replacing it. One example would be
  '(\"iconv\" \"-t\" \"ASCII//TRANSLIT\")
  to transliterate every non-ASCII character to its corresponding
    ASCII approximate character.")


You might put the function and variable definitions in a file, for 
example "~/my_emacs_libs/gnus_wash_articles.el".  Byte compile 
that file.  Have it loaded from the emacs startup file: 

  (load "~/my_emacs_libs/gnus_wash_articles")


You might put the following assignments into the gnus startup 
file: 


Assign a value to the variable:  


  (setq-default
    my-gnus-article-wash
    '("the_external_python_script" "and" "its" "parameters"))


Put the function into the gnus-part-display-hook:  


  (add-hook
    'gnus-part-display-hook
    (function my-gnus-article-wash))

That will invoke the python script with the given parameters on 
the article content.