How to modify 'write-file'

How to modify 'write-file'

[richard.christensen]

Hi,  I write and modify many files with long names in which I need to
save the changed file to a similar name as the original but with a few
letters or numbers changed. A useful modification to write-file would
be to have the current file name to be placed in the minibuffer along
with the path when write-file is called. Then modifying the name would
be simple.  How would I do this?  Ideas?

Richard.

Re: How to modify 'write-file'

[Pascal J. Bourguignon]

"richard.christensen" <richard.christensen@avagotech.com> writes:

> Hi,  I write and modify many files with long names in which I need to
> save the changed file to a similar name as the original but with a few
> letters or numbers changed. A useful modification to write-file would
> be to have the current file name to be placed in the minibuffer along
> with the path when write-file is called. Then modifying the name would
> be simple.  How would I do this?  Ideas?

Add the (buffer-name) as initial value to the first call to
read-file-name:

  (interactive
   (list (if buffer-file-name
             (read-file-name "Write file: " default-directory
                             (expand-file-name
                              (file-name-nondirectory (buffer-name))
                              default-directory)
                             nil
                              (buffer-name))
             (read-file-name "Write file: " default-directory
                             (expand-file-name
                              (file-name-nondirectory (buffer-name))
                              default-directory)
                             nil nil))
         (not current-prefix-arg)))
-- 
__Pascal Bourguignon__

Re: How to modify 'write-file'

[richard.christensen]

Thanks.  I'll give this a try.

On Apr 10, 12:00 pm, p...@informatimago.com (Pascal J. Bourguignon)
wrote:
> "richard.christensen" <richard.christen...@avagotech.com> writes:
> > Hi,  I write and modify many files with long names in which I need to
> > save the changed file to a similar name as the original but with a few
> > letters or numbers changed. A useful modification to write-file would
> > be to have the current file name to be placed in the minibuffer along
> > with the path when write-file is called. Then modifying the name would
> > be simple.  How would I do this?  Ideas?
>
> Add the (buffer-name) as initial value to the first call to
> read-file-name:
>
>   (interactive
>    (list (if buffer-file-name
>              (read-file-name "Write file: " default-directory
>                              (expand-file-name
>                               (file-name-nondirectory (buffer-name))
>                               default-directory)
>                              nil
>                               (buffer-name))
>              (read-file-name "Write file: " default-directory
>                              (expand-file-name
>                               (file-name-nondirectory (buffer-name))
>                               default-directory)
>                              nil nil))
>          (not current-prefix-arg)))
> --
> __Pascal Bourguignon__

Re: How to modify 'write-file'

[richard.christensen]

On Apr 10, 12:00 pm, p...@informatimago.com (Pascal J. Bourguignon)
wrote:
> "richard.christensen" <richard.christen...@avagotech.com> writes:
> > Hi,  I write and modify many files with long names in which I need to
> > save the changed file to a similar name as the original but with a few
> > letters or numbers changed. A useful modification to write-file would
> > be to have the current file name to be placed in the minibuffer along
> > with the path when write-file is called. Then modifying the name would
> > be simple.  How would I do this?  Ideas?
>
> Add the (buffer-name) as initial value to the first call to
> read-file-name:
>
>   (interactive
>    (list (if buffer-file-name
>              (read-file-name "Write file: " default-directory
>                              (expand-file-name
>                               (file-name-nondirectory (buffer-name))
>                               default-directory)
>                              nil
>                               (buffer-name))
>              (read-file-name "Write file: " default-directory
>                              (expand-file-name
>                               (file-name-nondirectory (buffer-name))
>                               default-directory)
>                              nil nil))
>          (not current-prefix-arg)))
> --
> __Pascal Bourguignon__

Hi,  I am missing something.  When I C-x w on a buffer, I see no
different behavior.  The current path is there but not the buffer
name. I did eval-region first.

Richard

Re: How to modify 'write-file'

[Pascal J. Bourguignon]

"richard.christensen" <richard.christensen@avagotech.com> writes:

> On Apr 10, 12:00 pm, p...@informatimago.com (Pascal J. Bourguignon)
> wrote:
>> "richard.christensen" <richard.christen...@avagotech.com> writes:
>> > Hi,  I write and modify many files with long names in which I need to
>> > save the changed file to a similar name as the original but with a few
>> > letters or numbers changed. A useful modification to write-file would
>> > be to have the current file name to be placed in the minibuffer along
>> > with the path when write-file is called. Then modifying the name would
>> > be simple.  How would I do this?  Ideas?
>>
>> Add the (buffer-name) as initial value to the first call to
>> read-file-name:
>>
>>   (interactive
>>    (list (if buffer-file-name
>>              (read-file-name "Write file: " default-directory
>>                              (expand-file-name
>>                               (file-name-nondirectory (buffer-name))
>>                               default-directory)
>>                              nil
>>                               (buffer-name))
>>              (read-file-name "Write file: " default-directory
>>                              (expand-file-name
>>                               (file-name-nondirectory (buffer-name))
>>                               default-directory)
>>                              nil nil))
>>          (not current-prefix-arg)))
>> --
>> __Pascal Bourguignon__
>
> Hi,  I am missing something.  When I C-x w on a buffer, I see no
> different behavior.  The current path is there but not the buffer
> name. I did eval-region first.

You have to replace the interactive form in the write-file definition
and eval-region the write-file defun.

interactive alone doesn't do anything.

-- 
__Pascal Bourguignon__

Re: How to modify 'write-file'

[richard.christensen]

Hi Pascal,

I am sorry for being thick.  I have tried several things and have
tried to do some
reading about how to implement this code.  I can't get anything to
work. I can
see what appears to be the correct words on the minibuffer, but upon
hitting enter,
either nothing happens or I get an error about wrong number of
arguments.

Should I be doing this (defun write-file (arg) or should I be creating
a new function?
I see that a list is created but I am sure the write-file does not
want the "Write file:" text
to be part of the operation.  So, some how I need to re-direct the
path and file name from the list
back to the write-function.  Am I missing anything else?

Richard.

On Apr 11, 5:36 pm, p...@informatimago.com (Pascal J. Bourguignon)
wrote:
> "richard.christensen" <richard.christen...@avagotech.com> writes:
> > On Apr 10, 12:00 pm, p...@informatimago.com (Pascal J. Bourguignon)
> > wrote:
> >> "richard.christensen" <richard.christen...@avagotech.com> writes:
> >> > Hi,  I write and modify many files with long names in which I need to
> >> > save the changed file to a similar name as the original but with a few
> >> > letters or numbers changed. A useful modification to write-file would
> >> > be to have the current file name to be placed in the minibuffer along
> >> > with the path when write-file is called. Then modifying the name would
> >> > be simple.  How would I do this?  Ideas?
>
> >> Add the (buffer-name) as initial value to the first call to
> >> read-file-name:
>
> >>   (interactive
> >>    (list (if buffer-file-name
> >>              (read-file-name "Write file: " default-directory
> >>                              (expand-file-name
> >>                               (file-name-nondirectory (buffer-name))
> >>                               default-directory)
> >>                              nil
> >>                               (buffer-name))
> >>              (read-file-name "Write file: " default-directory
> >>                              (expand-file-name
> >>                               (file-name-nondirectory (buffer-name))
> >>                               default-directory)
> >>                              nil nil))
> >>          (not current-prefix-arg)))
> >> --
> >> __Pascal Bourguignon__
>
> > Hi,  I am missing something.  When I C-x w on a buffer, I see no
> > different behavior.  The current path is there but not the buffer
> > name. I did eval-region first.
>
> You have to replace the interactive form in the write-file definition
> and eval-region the write-file defun.
>
> interactive alone doesn't do anything.
>
> --
> __Pascal Bourguignon__

Re: How to modify 'write-file'

[Pascal J. Bourguignon]

"richard.christensen" <richard.christensen@avagotech.com> writes:

> Hi Pascal,
>
> I am sorry for being thick.  I have tried several things and have
> tried to do some
> reading about how to implement this code.  I can't get anything to
> work. I can
> see what appears to be the correct words on the minibuffer, but upon
> hitting enter,
> either nothing happens or I get an error about wrong number of
> arguments.
>
> Should I be doing this (defun write-file (arg) or should I be creating
> a new function?
> I see that a list is created but I am sure the write-file does not
> want the "Write file:" text
> to be part of the operation.  So, some how I need to re-direct the
> path and file name from the list
> back to the write-function.  Am I missing anything else?

Sorry, I assumed you were already a seasoned emacs lisp programmer.
Here are detailed instructions:

1- Find the sources of write-file, type:
     C-h f write-file RET    C-x o   TAB    RET

2- Copy and paste the defun write-file form to the *scratch* buffer:
     C-SPC C-M-f M-w  C-x b *scratch* RET  RET C-y  C-M-b

You get this in the *scratch* buffer:

(defun write-file (filename &optional confirm)
  "Write current buffer into file FILENAME.
This makes the buffer visit that file, and marks it as not modified.

If you specify just a directory name as FILENAME, that means to use
the default file name but in that directory.  You can also yank
the default file name into the minibuffer to edit it, using \\<minibuffer-local-map>\\[next-history-element].

If the buffer is not already visiting a file, the default file name
for the output file is the buffer name.

If optional second arg CONFIRM is non-nil, this function
asks for confirmation before overwriting an existing file.
Interactively, confirmation is required unless you supply a prefix argument."
;;  (interactive "FWrite file: ")
  (interactive
   (list (if buffer-file-name
	     (read-file-name "Write file: "
			     nil nil nil nil)
	   (read-file-name "Write file: " default-directory
			   (expand-file-name
			    (file-name-nondirectory (buffer-name))
			    default-directory)
			   nil nil))
	 (not current-prefix-arg)))
  (or (null filename) (string-equal filename "")
      (progn
	;; If arg is just a directory,
	;; use the default file name, but in that directory.
	(if (file-directory-p filename)
	    (setq filename (concat (file-name-as-directory filename)
				   (file-name-nondirectory
				    (or buffer-file-name (buffer-name))))))
	(and confirm
	     (file-exists-p filename)
	     (or (y-or-n-p (format "File `%s' exists; overwrite? " filename))
		 (error "Canceled")))
	(set-visited-file-name filename (not confirm))))
  (set-buffer-modified-p t)
  ;; Make buffer writable if file is writable.
  (and buffer-file-name
       (file-writable-p buffer-file-name)
       (setq buffer-read-only nil))
  (save-buffer)
  ;; It's likely that the VC status at the new location is different from
  ;; the one at the old location.
  (vc-find-file-hook))


3- Replace the interactive form in this defun by the one I provided:

    (interactive
     (list (if buffer-file-name
               (read-file-name "Write file: " default-directory
                               (expand-file-name
                                (file-name-nondirectory (buffer-name))
                                default-directory)
                               nil
                                (buffer-name))
               (read-file-name "Write file: " default-directory
                               (expand-file-name
                                (file-name-nondirectory (buffer-name))
                                default-directory)
                               nil nil))
           (not current-prefix-arg)))

so that you get:


(defun write-file (filename &optional confirm)
  "Write current buffer into file FILENAME.
This makes the buffer visit that file, and marks it as not modified.

If you specify just a directory name as FILENAME, that means to use
the default file name but in that directory.  You can also yank
the default file name into the minibuffer to edit it, using \\<minibuffer-local-map>\\[next-history-element].

If the buffer is not already visiting a file, the default file name
for the output file is the buffer name.

If optional second arg CONFIRM is non-nil, this function
asks for confirmation before overwriting an existing file.
Interactively, confirmation is required unless you supply a prefix argument."
  (interactive
     (list (if buffer-file-name
               (read-file-name "Write file: " default-directory
                               (expand-file-name
                                (file-name-nondirectory (buffer-name))
                                default-directory)
                               nil
                                (buffer-name))
               (read-file-name "Write file: " default-directory
                               (expand-file-name
                                (file-name-nondirectory (buffer-name))
                                default-directory)
                               nil nil))
           (not current-prefix-arg)))
  (or (null filename) (string-equal filename "")
      (progn
	;; If arg is just a directory,
	;; use the default file name, but in that directory.
	(if (file-directory-p filename)
	    (setq filename (concat (file-name-as-directory filename)
				   (file-name-nondirectory
				    (or buffer-file-name (buffer-name))))))
	(and confirm
	     (file-exists-p filename)
	     (or (y-or-n-p (format "File `%s' exists; overwrite? " filename))
		 (error "Canceled")))
	(set-visited-file-name filename (not confirm))))
  (set-buffer-modified-p t)
  ;; Make buffer writable if file is writable.
  (and buffer-file-name
       (file-writable-p buffer-file-name)
       (setq buffer-read-only nil))
  (save-buffer)
  ;; It's likely that the VC status at the new location is different from
  ;; the one at the old location.
  (vc-find-file-hook))

4- Evaluate this defun, for example positionning the cursor after it,
   and typing C-x C-e.

5- Use the new write-file.


If you want to keep this version of write-file, you can copy-and-paste
it into your ~/.emacs file.


-- 
__Pascal Bourguignon__

Re: How to modify 'write-file'

[richard.christensen]

Thanks.  This works great.

Richard.

On Apr 13, 6:37 pm, p...@informatimago.com (Pascal J. Bourguignon)
wrote:
> "richard.christensen" <richard.christen...@avagotech.com> writes:
> > Hi Pascal,
>
> > I am sorry for being thick.  I have tried several things and have
> > tried to do some
> > reading about how to implement this code.  I can't get anything to
> > work. I can
> > see what appears to be the correct words on the minibuffer, but upon
> > hitting enter,
> > either nothing happens or I get an error about wrong number of
> > arguments.
>
> > Should I be doing this (defun write-file (arg) or should I be creating
> > a new function?
> > I see that a list is created but I am sure the write-file does not
> > want the "Write file:" text
> > to be part of the operation.  So, some how I need to re-direct the
> > path and file name from the list
> > back to the write-function.  Am I missing anything else?
>
> Sorry, I assumed you were already a seasoned emacs lisp programmer.
> Here are detailed instructions:
>
> 1- Find the sources of write-file, type:
>      C-h f write-file RET    C-x o   TAB    RET
>
> 2- Copy and paste the defun write-file form to the *scratch* buffer:
>      C-SPC C-M-f M-w  C-x b *scratch* RET  RET C-y  C-M-b
>
> You get this in the *scratch* buffer:
>
> (defun write-file (filename &optional confirm)
>   "Write current buffer into file FILENAME.
> This makes the buffer visit that file, and marks it as not modified.
>
> If you specify just a directory name as FILENAME, that means to use
> the default file name but in that directory.  You can also yank
> the default file name into the minibuffer to edit it, using \\<minibuffer-local-map>\\[next-history-element].
>
> If the buffer is not already visiting a file, the default file name
> for the output file is the buffer name.
>
> If optional second arg CONFIRM is non-nil, this function
> asks for confirmation before overwriting an existing file.
> Interactively, confirmation is required unless you supply a prefix argument."
> ;;  (interactive "FWrite file: ")
>   (interactive
>    (list (if buffer-file-name
>              (read-file-name "Write file: "
>                              nil nil nil nil)
>            (read-file-name "Write file: " default-directory
>                            (expand-file-name
>                             (file-name-nondirectory (buffer-name))
>                             default-directory)
>                            nil nil))
>          (not current-prefix-arg)))
>   (or (null filename) (string-equal filename "")
>       (progn
>         ;; If arg is just a directory,
>         ;; use the default file name, but in that directory.
>         (if (file-directory-p filename)
>             (setq filename (concat (file-name-as-directory filename)
>                                    (file-name-nondirectory
>                                     (or buffer-file-name (buffer-name))))))
>         (and confirm
>              (file-exists-p filename)
>              (or (y-or-n-p (format "File `%s' exists; overwrite? " filename))
>                  (error "Canceled")))
>         (set-visited-file-name filename (not confirm))))
>   (set-buffer-modified-p t)
>   ;; Make buffer writable if file is writable.
>   (and buffer-file-name
>        (file-writable-p buffer-file-name)
>        (setq buffer-read-only nil))
>   (save-buffer)
>   ;; It's likely that the VC status at the new location is different from
>   ;; the one at the old location.
>   (vc-find-file-hook))
>
> 3- Replace the interactive form in this defun by the one I provided:
>
>     (interactive
>      (list (if buffer-file-name
>                (read-file-name "Write file: " default-directory
>                                (expand-file-name
>                                 (file-name-nondirectory (buffer-name))
>                                 default-directory)
>                                nil
>                                 (buffer-name))
>                (read-file-name "Write file: " default-directory
>                                (expand-file-name
>                                 (file-name-nondirectory (buffer-name))
>                                 default-directory)
>                                nil nil))
>            (not current-prefix-arg)))
>
> so that you get:
>
> (defun write-file (filename &optional confirm)
>   "Write current buffer into file FILENAME.
> This makes the buffer visit that file, and marks it as not modified.
>
> If you specify just a directory name as FILENAME, that means to use
> the default file name but in that directory.  You can also yank
> the default file name into the minibuffer to edit it, using \\<minibuffer-local-map>\\[next-history-element].
>
> If the buffer is not already visiting a file, the default file name
> for the output file is the buffer name.
>
> If optional second arg CONFIRM is non-nil, this function
> asks for confirmation before overwriting an existing file.
> Interactively, confirmation is required unless you supply a prefix argument."
>   (interactive
>      (list (if buffer-file-name
>                (read-file-name "Write file: " default-directory
>                                (expand-file-name
>                                 (file-name-nondirectory (buffer-name))
>                                 default-directory)
>                                nil
>                                 (buffer-name))
>                (read-file-name "Write file: " default-directory
>                                (expand-file-name
>                                 (file-name-nondirectory (buffer-name))
>                                 default-directory)
>                                nil nil))
>            (not current-prefix-arg)))
>   (or (null filename) (string-equal filename "")
>       (progn
>         ;; If arg is just a directory,
>         ;; use the default file name, but in that directory.
>         (if (file-directory-p filename)
>             (setq filename (concat (file-name-as-directory filename)
>                                    (file-name-nondirectory
>                                     (or buffer-file-name (buffer-name))))))
>         (and confirm
>              (file-exists-p filename)
>              (or (y-or-n-p (format "File `%s' exists; overwrite? " filename))
>                  (error "Canceled")))
>         (set-visited-file-name filename (not confirm))))
>   (set-buffer-modified-p t)
>   ;; Make buffer writable if file is writable.
>   (and buffer-file-name
>        (file-writable-p buffer-file-name)
>        (setq buffer-read-only nil))
>   (save-buffer)
>   ;; It's likely that the VC status at the new location is different from
>   ;; the one at the old location.
>   (vc-find-file-hook))
>
> 4- Evaluate this defun, for example positionning the cursor after it,
>    and typing C-x C-e.
>
> 5- Use the new write-file.
>
> If you want to keep this version of write-file, you can copy-and-paste
> it into your ~/.emacs file.
>
> --
> __Pascal Bourguignon__

Re: How to modify 'write-file'

[Kevin Rodgers]

Pascal J. Bourguignon wrote:
...
> Sorry, I assumed you were already a seasoned emacs lisp programmer.
> Here are detailed instructions:
> 
> 1- Find the sources of write-file, type:
>      C-h f write-file RET    C-x o   TAB    RET
> 
> 2- Copy and paste the defun write-file form to the *scratch* buffer:
>      C-SPC C-M-f M-w  C-x b *scratch* RET  RET C-y  C-M-b
> 
> You get this in the *scratch* buffer:
...
> 3- Replace the interactive form in this defun by the one I provided:
> 
>     (interactive
>      (list (if buffer-file-name
>                (read-file-name "Write file: " default-directory
>                                (expand-file-name
>                                 (file-name-nondirectory (buffer-name))
>                                 default-directory)
>                                nil
>                                 (buffer-name))
>                (read-file-name "Write file: " default-directory
>                                (expand-file-name
>                                 (file-name-nondirectory (buffer-name))
>                                 default-directory)
>                                nil nil))
>            (not current-prefix-arg)))
> 
> so that you get:
...
> 4- Evaluate this defun, for example positionning the cursor after it,
>    and typing C-x C-e.
> 
> 5- Use the new write-file.
> 
> 
> If you want to keep this version of write-file, you can copy-and-paste
> it into your ~/.emacs file.

(defadvice write-file (before interactive-default activate)
   "Insert the default in the minibuffer when reading FILENAME."
   (interactive
    (let ((default-filename (or buffer-file-name
			       (expand-file-name
				(file-name-nondirectory (buffer-name))
				default-directory))))
      (list (read-file-name "Write file: "
			   default-directory default-filename nil
			   (file-name-nondirectory default-filename) nil)
	   (not current-prefix-arg)))))

-- 
Kevin Rodgers
Denver, Colorado, USA

Re: How to modify 'write-file'

[Thierry Volpiatto]

Kevin Rodgers <kevin.d.rodgers@gmail.com> writes:

> Pascal J. Bourguignon wrote:
> ...
>> Sorry, I assumed you were already a seasoned emacs lisp programmer.
>> Here are detailed instructions:
>>
>> 1- Find the sources of write-file, type:
>>      C-h f write-file RET    C-x o   TAB    RET
>>
>> 2- Copy and paste the defun write-file form to the *scratch* buffer:
>>      C-SPC C-M-f M-w  C-x b *scratch* RET  RET C-y  C-M-b
>>
>> You get this in the *scratch* buffer:
> ...
>> 3- Replace the interactive form in this defun by the one I provided:
>>
>>     (interactive
>>      (list (if buffer-file-name
>>                (read-file-name "Write file: " default-directory
>>                                (expand-file-name
>>                                 (file-name-nondirectory (buffer-name))
>>                                 default-directory)
>>                                nil
>>                                 (buffer-name))
>>                (read-file-name "Write file: " default-directory
>>                                (expand-file-name
>>                                 (file-name-nondirectory (buffer-name))
>>                                 default-directory)
>>                                nil nil))
>>            (not current-prefix-arg)))
>>
>> so that you get:
> ...
>> 4- Evaluate this defun, for example positionning the cursor after it,
>>    and typing C-x C-e.
>>
>> 5- Use the new write-file.
>>
>>
>> If you want to keep this version of write-file, you can copy-and-paste
>> it into your ~/.emacs file.
>
> (defadvice write-file (before interactive-default activate)
>   "Insert the default in the minibuffer when reading FILENAME."
>   (interactive
>    (let ((default-filename (or buffer-file-name
> 			       (expand-file-name
> 				(file-name-nondirectory (buffer-name))
> 				default-directory))))
>      (list (read-file-name "Write file: "
> 			   default-directory default-filename nil
> 			   (file-name-nondirectory default-filename) nil)
> 	   (not current-prefix-arg)))))

See also `anything-write-file' that is included in anything-config.el.

-- 
Thierry Volpiatto
Gpg key: http://pgp.mit.edu/

Re: How to modify 'write-file'

[Andreas Politz]

"richard.christensen" <richard.christensen@avagotech.com> writes:

> Hi,  I write and modify many files with long names in which I need to
> save the changed file to a similar name as the original but with a few
> letters or numbers changed. A useful modification to write-file would
> be to have the current file name to be placed in the minibuffer along
> with the path when write-file is called. Then modifying the name would
> be simple.  How would I do this?  Ideas?
>
> Richard.

I would use dired for this.  First create a dired buffer with the files,
or a superset it, with `dired', `find-dired' or some other incarnation.

Then
M-x wdired-change-to-dired-mode RET
and it let's you edit the file-names, after which you press `C-c C-c'
and commit the changes to the filesystem.

-ap

Re: How to modify 'write-file'

[richard.christensen]

Thanks.  A friend of mine suggested using Dired as well.  Your
approach is more complete.  I really should get more familiar with it
and use it more.

richard

On Apr 10, 12:19 pm, Andreas Politz <poli...@fh-trier.de> wrote:
> "richard.christensen" <richard.christen...@avagotech.com> writes:
> > Hi,  I write and modify many files with long names in which I need to
> > save the changed file to a similar name as the original but with a few
> > letters or numbers changed. A useful modification to write-file would
> > be to have the current file name to be placed in the minibuffer along
> > with the path when write-file is called. Then modifying the name would
> > be simple.  How would I do this?  Ideas?
>
> > Richard.
>
> I would use dired for this.  First create a dired buffer with the files,
> or a superset it, with `dired', `find-dired' or some other incarnation.
>
> Then
> M-x wdired-change-to-dired-mode RET
> and it let's you edit the file-names, after which you press `C-c C-c'
> and commit the changes to the filesystem.
>
> -ap

Re: How to modify 'write-file'

[Andreas Politz]

"richard.christensen" <richard.christensen@avagotech.com> writes:

> Thanks.  A friend of mine suggested using Dired as well.  Your
> approach is more complete.  I really should get more familiar with it
> and use it more.
>
> richard
>
>>
>> I would use dired for this.  First create a dired buffer with the files,
>> or a superset it, with `dired', `find-dired' or some other incarnation.
>>
>> Then
>> M-x wdired-change-to-dired-mode RET
                        ^
I missed a `w' in there, the command is called
`wdired-change-to-wdired-mode'.

>> and it let's you edit the file-names, after which you press `C-c C-c'
>> and commit the changes to the filesystem.
>>
-ap