rst.el: change to accomodate tramp.el

See email below.

n 1/11/07, Hans Halvorson <hhalvors@princeton.edu> wrote:
> I have been talking with the maintainers of Tramp (remote file editing
> over ssh for Emacs) about how to get rst-compile (in rst.el) to work
> with Tramp's remote compilation capabilities.  The results of this
> discussion are pasted in below.  Might rst.el be modified to make it
> compatible with Tramp?
> 
> Thanks,
> Hans Halvorson
> 
> [From Michael Albinus:]
> 
> > [From Hans Halvorson:]
> >
> > I have pasted in below the definition of the "rst-compile" in rst.el.
> > > The problem is with the call to "rst-compile-find-conf" in the first
> > > let clause.  This function tries to search for a file called
> > > "docutils.conf" in all directories above the directory of the current
> > > buffer.  I do not know if that function is strictly incompatible with
> > > Tramp, or whether it just takes a very long time to search on some
> > > remote hosts.  But I have waited for up to two minutes after calling
> > > rst-compile before pressing C-g to cancel.
> 
> > I've modified the code slightly:
> 
> >   (let ((file-name "docutils.conf")
> >         (buffer-file "/ssh:localhost:~/.emacs"))
> >     ;; Move up in the dir hierarchy till we find a change log file.
> >     (let ((dir (file-name-directory buffer-file)))
> >       (while (and (or (not (string= "/" dir)) (setq dir nil) nil)
> >                   (not (file-exists-p (concat dir file-name))))
> >       (message dir)
> >         ;; Move up to the parent dir and try again.
> >         (setq dir (expand-file-name (file-name-directory
> >                                      (directory-file-name
> >                                      (file-name-directory dir))))) )
> >       (or (and dir (concat dir file-name)) nil)
> >     ))
> 
> > If you evaluate the code, you'll see something like this in *Messages*:
> 
> > Mark set
> > /ssh:albinus@localhost:~/
> > /ssh:albinus@localhost:/home/albinus/
> > /ssh:albinus@localhost:/home/
> > /ssh:albinus@localhost:/ [340 times]
> > Quit
> 
> > The point is that the iteration goes via upper directories, and an
> > upper directory is computed as
> 
> > (file-name-directory
> >  (directory-file-name
> >   (file-name-directory dir)))
> 
> > That is correct, but for "/ssh:albinus@localhost:/" the upper directory
> > is "/ssh:albinus@localhost:/" again. The stop condition (string= "/" dir)
> > does not match in case of remote files.
> 
> > I fear, Tramp cannot solve the problem; rst.el must take remote files
> > into account.

Yes.


> [From Kai Grossjohann]
> 
> > rst.el could stop when X and (directory-file-name (file-name-directory
> > (directory-file-name X))) are equal.  That would work whether the
> > "root" directory is "/" or "C:/" (say) or "/ssh:foo:/".
> 
> > What do people think?

I think Kai is a genius, as always.
Yes.
I've made the change, see path below, can you test with tramp?
thx












git-svn-id: http://svn.code.sf.net/p/docutils/code/trunk/docutils@4879 929543f6-e4f2-0310-98a6-ba3bd3dd1d04

1 files changed, 10 insertions, 5 deletions

diff --git a/tools/editors/emacs/rst.el b/tools/editors/emacs/rst.el
index f80cf965e..22144c0b1 100644
--- a/tools/editors/emacs/rst.el
+++ b/tools/editors/emacs/rst.el
@@ -2310,7 +2310,7 @@ of each paragraph only."
 
 	    (previous nil valid)
 
- 	    (curcol (current-column) 
+ 	    (curcol (current-column)
 		    (current-column))
 
 	    (valid (and (= curcol leftcol)
@@ -2323,7 +2323,7 @@ of each paragraph only."
 	(if (if ,first-only
 		(and valid (not previous))
 	      valid)
-	    ,body-consequent 
+	    ,body-consequent
 	  ,body-alternative)
 
 	))))
@@ -3203,13 +3203,18 @@ string)) to be used for converting the document.")
   (let ((file-name "docutils.conf")
         (buffer-file (buffer-file-name)))
     ;; Move up in the dir hierarchy till we find a change log file.
-    (let ((dir (file-name-directory buffer-file)))
-      (while (and (or (not (string= "/" dir)) (setq dir nil) nil)
+    (let* ((dir (file-name-directory buffer-file))
+	   (prevdir nil))
+      (while (and (or (not (string= dir prevdir))
+		      (setq dir nil) 
+		      nil)
                   (not (file-exists-p (concat dir file-name))))
         ;; Move up to the parent dir and try again.
+	(setq prevdir dir)
         (setq dir (expand-file-name (file-name-directory
                                      (directory-file-name
-                                     (file-name-directory dir))))) )
+				      (file-name-directory dir)))))
+	)
       (or (and dir (concat dir file-name)) nil)
     )))