Disable perltidy in a region?

[diotalevi]

Are there any pragmas, syntax, comments, or anything that would allow me to disable perltidy's reformatting in a region? Perltidy is fine most of the time but occasionally writes something utterly crapulous. I'd like to add my own whitespace in those cases.

I've instructed emacs to auto-tidy all the perl w/ the following code. I include it a bonus to anyone who reads this.

(defun cperl-save-buffer (&optional args)
  (interactive "p")
  (if (buffer-modified-p)
      (perltidy-buffer))
  (save-buffer t))
(defun perltidy-buffer ()
  (interactive)
  (save-excursion
    (shell-command-on-region
     (point-min) (point-max)
     "perltidy -st" nil t shell-command-default-error-buffer)))
(add-to-list
  'cperl-mode-hook
  (lambda ()
    (substitute-key-definition 'save-buffer 'cperl-save-buffer cperl-m
+ode-map global-map)))

[ambrus]

eval q{
        put code here
};

[RMGir]

That would work. It has a runtime penalty associated with it, though, if the eval happens more than once.

I think.

[blazar]

I don't think he's suggesting to definitively turn (possibly) large chunks of code into string evals and otoh diotalevi is not likely to do anything like that - unless it's for an astonishing trick of his, that is!

I think he's suggesting to trick perltidy temporarily. I don't use perltidy myself, but my editor generally does a good job automatically indenting the code for me. However for Perl that's hard and occasionally fails. In those cases I insert comments and trick it into thinking the code is somewhat more "regular" than it actually is, so that it can indent it nicely. Then I undo the local modifications.

[chrestomanci]

There is a section in the perltidy documentation on how to do that. See: skipping_selected_sections_of_code

In short, you should sourrond the code you don't want modified with  #<<< and  #>>> tags.