* [PATCH] Fix for vc-bzr-diff when vc-bzr-diff-switches is t
@ 2011-01-26 13:53 Deniz Dogan
2011-01-27 1:41 ` Glenn Morris
2011-01-27 3:13 ` Stefan Monnier
0 siblings, 2 replies; 6+ messages in thread
From: Deniz Dogan @ 2011-01-26 13:53 UTC (permalink / raw)
To: Emacs-Devel devel
I have had problems with vc-bzr-diff for some time now, getting errors
about some file not being found. After much digging around in the VC
architecture, I realized that the problem is of course that I don't
have the diff tool installed, as I'm on Windows 7 without cygwin.
But since "bzr diff" works for me in a command prompt, I figured doing
a bzr diff in Emacs should work too, as long as it doesn't pass
--diff-options to bzr, which would require the diff tool.
So I set vc-bzr-diff-switches to t which means that I don't want to
pass any options to diff. However, Emacs still executes:
bzr diff --diff-options the-file
This breaks bzr completely as bzr expects diff options after
--diff-options. So I wrote the attached patch for vc-bzr.el which
takes care of the case when vc-bzr-diff-switches is t, i.e., when we
don't want any diff switches, resulting in:
bzr diff the-file
I'm not ready to say that the attached patch is good to go, as I'm
pretty new to the VC package in general, so I'd appreciate it if you
guys test it out.
Thanks
--
Deniz Dogan
# Bazaar merge directive format 2 (Bazaar 0.90)
# revision_id: deniz.a.m.dogan@gmail.com-20110126134056-\
# 34dve8s23jpoym3a
# target_branch: bzr+ssh://damd@bzr.savannah.gnu.org/emacs/trunk/
# testament_sha1: ba35bbaf78d6175412e7b8afee93cc1452de2fc1
# timestamp: 2011-01-26 14:42:36 +0100
# base_revision_id: rgm@gnu.org-20110125174128-bjtiwgdubw4frnj1
#
# Begin patch
=== modified file 'lisp/ChangeLog'
--- lisp/ChangeLog 2011-01-25 17:41:28 +0000
+++ lisp/ChangeLog 2011-01-26 13:40:56 +0000
@@ -1,3 +1,8 @@
+2011-01-26 Deniz Dogan <deniz.a.m.dogan@gmail.com>
+
+ * vc/vc-bzr.el (vc-bzr-diff): Don't pass --diff-options if
+ vc-bzr-diff-switches is t.
+
2011-01-25 Sam Steingold <sds@gnu.org>
* vc/vc-svn.el (vc-svn-diff): Use `diff-command' instead of the
=== modified file 'lisp/vc/vc-bzr.el'
--- lisp/vc/vc-bzr.el 2011-01-25 04:08:28 +0000
+++ lisp/vc/vc-bzr.el 2011-01-26 13:40:56 +0000
@@ -674,18 +674,23 @@
(defun vc-bzr-diff (files &optional rev1 rev2 buffer)
"VC bzr backend for diff."
- ;; `bzr diff' exits with code 1 if diff is non-empty.
- (apply #'vc-bzr-command "diff" (or buffer "*vc-diff*")
- (if vc-disable-async-diff 1 'async) files
- "--diff-options" (mapconcat 'identity
- (vc-switches 'bzr 'diff)
- " ")
- ;; This `when' is just an optimization because bzr-1.2 is *much*
- ;; faster when the revision argument is not given.
- (when (or rev1 rev2)
- (list "-r" (format "%s..%s"
- (or rev1 "revno:-1")
- (or rev2 ""))))))
+ (let (args)
+ (unless (eq t vc-bzr-diff-switches) ;; t means "no switches"
+ (setq args
+ (list "--diff-options" (mapconcat 'identity
+ (vc-switches 'bzr 'diff)
+ " "))))
+ ;; This `when' is just an optimization because bzr-1.2 is *much*
+ ;; faster when the revision argument is not given.
+ (when (or rev1 rev2)
+ (setq args (append args (list "-r" (format "%s..%s"
+ (or rev1 "revno:-1")
+ (or rev2 ""))))))
+ ;; `bzr diff' exits with code 1 if diff is non-empty.
+ (apply #'vc-bzr-command "diff" (or buffer "*vc-diff*")
+ (if vc-disable-async-diff 1 'async) files
+ args)))
+
;; FIXME: vc-{next,previous}-revision need fixing in vc.el to deal with
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^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH] Fix for vc-bzr-diff when vc-bzr-diff-switches is t
2011-01-26 13:53 [PATCH] Fix for vc-bzr-diff when vc-bzr-diff-switches is t Deniz Dogan
@ 2011-01-27 1:41 ` Glenn Morris
2011-01-27 2:53 ` Deniz Dogan
2011-01-27 3:13 ` Stefan Monnier
1 sibling, 1 reply; 6+ messages in thread
From: Glenn Morris @ 2011-01-27 1:41 UTC (permalink / raw)
To: Deniz Dogan; +Cc: Emacs-Devel devel
Deniz Dogan wrote:
> + (let (args)
> + (unless (eq t vc-bzr-diff-switches) ;; t means "no switches"
I think it's better to check for zero-length return from
(vc-switches 'bzr 'diff).
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH] Fix for vc-bzr-diff when vc-bzr-diff-switches is t
2011-01-27 1:41 ` Glenn Morris
@ 2011-01-27 2:53 ` Deniz Dogan
0 siblings, 0 replies; 6+ messages in thread
From: Deniz Dogan @ 2011-01-27 2:53 UTC (permalink / raw)
To: Glenn Morris; +Cc: Emacs-Devel devel
2011/1/27 Glenn Morris <rgm@gnu.org>:
> Deniz Dogan wrote:
>
>> + (let (args)
>> + (unless (eq t vc-bzr-diff-switches) ;; t means "no switches"
>
> I think it's better to check for zero-length return from
> (vc-switches 'bzr 'diff).
>
How about this?
--
Deniz Dogan
# Bazaar merge directive format 2 (Bazaar 0.90)
# revision_id: deniz.a.m.dogan@gmail.com-20110127025053-\
# 8qw1p28em01t5or7
# target_branch: bzr+ssh://damd@bzr.savannah.gnu.org/emacs/trunk/
# testament_sha1: 8e019713af179638969ba99256119208c84fe0ca
# timestamp: 2011-01-27 03:51:25 +0100
# base_revision_id: rgm@gnu.org-20110125174128-bjtiwgdubw4frnj1
#
# Begin patch
=== modified file 'lisp/ChangeLog'
--- lisp/ChangeLog 2011-01-25 17:41:28 +0000
+++ lisp/ChangeLog 2011-01-27 02:50:53 +0000
@@ -1,3 +1,8 @@
+2011-01-27 Deniz Dogan <deniz.a.m.dogan@gmail.com>
+
+ * vc/vc-bzr.el (vc-bzr-diff): Pass --diff-options only if using
+ diff switches.
+
2011-01-25 Sam Steingold <sds@gnu.org>
* vc/vc-svn.el (vc-svn-diff): Use `diff-command' instead of the
=== modified file 'lisp/vc/vc-bzr.el'
--- lisp/vc/vc-bzr.el 2011-01-25 04:08:28 +0000
+++ lisp/vc/vc-bzr.el 2011-01-27 02:50:53 +0000
@@ -674,18 +674,21 @@
(defun vc-bzr-diff (files &optional rev1 rev2 buffer)
"VC bzr backend for diff."
- ;; `bzr diff' exits with code 1 if diff is non-empty.
- (apply #'vc-bzr-command "diff" (or buffer "*vc-diff*")
- (if vc-disable-async-diff 1 'async) files
- "--diff-options" (mapconcat 'identity
- (vc-switches 'bzr 'diff)
- " ")
- ;; This `when' is just an optimization because bzr-1.2 is *much*
- ;; faster when the revision argument is not given.
- (when (or rev1 rev2)
- (list "-r" (format "%s..%s"
- (or rev1 "revno:-1")
- (or rev2 ""))))))
+ (let ((switches (vc-switches 'bzr 'diff))
+ args)
+ (when (> (length switches) 0)
+ (setq args (list "--diff-options" (mapconcat 'identity switches " "))))
+ ;; This `when' is just an optimization because bzr-1.2 is *much*
+ ;; faster when the revision argument is not given.
+ (when (or rev1 rev2)
+ (setq args (append args (list "-r" (format "%s..%s"
+ (or rev1 "revno:-1")
+ (or rev2 ""))))))
+ ;; `bzr diff' exits with code 1 if diff is non-empty.
+ (apply #'vc-bzr-command "diff" (or buffer "*vc-diff*")
+ (if vc-disable-async-diff 1 'async) files
+ args)))
+
;; FIXME: vc-{next,previous}-revision need fixing in vc.el to deal with
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^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH] Fix for vc-bzr-diff when vc-bzr-diff-switches is t
2011-01-26 13:53 [PATCH] Fix for vc-bzr-diff when vc-bzr-diff-switches is t Deniz Dogan
2011-01-27 1:41 ` Glenn Morris
@ 2011-01-27 3:13 ` Stefan Monnier
2011-01-27 9:50 ` Deniz Dogan
1 sibling, 1 reply; 6+ messages in thread
From: Stefan Monnier @ 2011-01-27 3:13 UTC (permalink / raw)
To: Deniz Dogan; +Cc: Emacs-Devel devel
> +2011-01-26 Deniz Dogan <deniz.a.m.dogan@gmail.com>
> +
> + * vc/vc-bzr.el (vc-bzr-diff): Don't pass --diff-options if
> + vc-bzr-diff-switches is t.
The comment's fine.
> - ;; `bzr diff' exits with code 1 if diff is non-empty.
> - (apply #'vc-bzr-command "diff" (or buffer "*vc-diff*")
> - (if vc-disable-async-diff 1 'async) files
> - "--diff-options" (mapconcat 'identity
> - (vc-switches 'bzr 'diff)
> - " ")
> - ;; This `when' is just an optimization because bzr-1.2 is *much*
> - ;; faster when the revision argument is not given.
> - (when (or rev1 rev2)
> - (list "-r" (format "%s..%s"
> - (or rev1 "revno:-1")
> - (or rev2 ""))))))
> + (let (args)
> + (unless (eq t vc-bzr-diff-switches) ;; t means "no switches"
> + (setq args
> + (list "--diff-options" (mapconcat 'identity
> + (vc-switches 'bzr 'diff)
> + " "))))
> + ;; This `when' is just an optimization because bzr-1.2 is *much*
> + ;; faster when the revision argument is not given.
> + (when (or rev1 rev2)
> + (setq args (append args (list "-r" (format "%s..%s"
> + (or rev1 "revno:-1")
> + (or rev2 ""))))))
> + ;; `bzr diff' exits with code 1 if diff is non-empty.
> + (apply #'vc-bzr-command "diff" (or buffer "*vc-diff*")
> + (if vc-disable-async-diff 1 'async) files
> + args)))
I suggest you try hard to directly give a value within `let' rather than
use (let (var) ...) and then give a value to var via `setq'.
In the above case, it would look like:
(let ((args
(append
(unless (eq t vc-bzr-diff-switches) ;; t means "no switches"
(list "--diff-options" (mapconcat 'identity
(vc-switches 'bzr 'diff)
" ")))
;; This `when' is just an optimization because bzr-1.2 is *much*
;; faster when the revision argument is not given.
(when (or rev1 rev2)
(list "-r" (format "%s..%s"
(or rev1 "revno:-1")
(or rev2 "")))))))
;; `bzr diff' exits with code 1 if diff is non-empty.
(apply #'vc-bzr-command "diff" (or buffer "*vc-diff*")
(if vc-disable-async-diff 1 'async) files
args)))
which you can also turn into
;; `bzr diff' exits with code 1 if diff is non-empty.
(apply #'vc-bzr-command "diff" (or buffer "*vc-diff*")
(if vc-disable-async-diff 1 'async) files
(append
(unless (eq t vc-bzr-diff-switches) ;; t means "no switches"
(list "--diff-options" (mapconcat 'identity
(vc-switches 'bzr 'diff)
" ")))
;; This `when' is just an optimization because bzr-1.2 is *much*
;; faster when the revision argument is not given.
(when (or rev1 rev2)
(list "-r" (format "%s..%s"
(or rev1 "revno:-1")
(or rev2 ""))))))
if you prefer. Also I agree with Glenn that it's better to check for
(zerop (length (vc-switches 'bzr 'diff))).
Stefan
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH] Fix for vc-bzr-diff when vc-bzr-diff-switches is t
2011-01-27 3:13 ` Stefan Monnier
@ 2011-01-27 9:50 ` Deniz Dogan
2011-01-27 17:19 ` Stefan Monnier
0 siblings, 1 reply; 6+ messages in thread
From: Deniz Dogan @ 2011-01-27 9:50 UTC (permalink / raw)
To: Stefan Monnier; +Cc: Emacs-Devel devel
Here is my third attempt given your comments.
I'm still unable to test this patch properly since I don't have the
diff tool, but looking at the commands that Emacs executes depending
on vc-bzr-diff-switches it looks fine.
--
Deniz Dogan
# Bazaar merge directive format 2 (Bazaar 0.90)
# revision_id: deniz.a.m.dogan@gmail.com-20110127094656-\
# wpy4g0ar18lokk25
# target_branch: bzr+ssh://damd@bzr.savannah.gnu.org/emacs/trunk/
# testament_sha1: 2aad3701c56f1c2975786049462e411b2f4fc43e
# timestamp: 2011-01-27 10:47:25 +0100
# base_revision_id: rgm@gnu.org-20110127083843-kh1tiktwkt13fl8f
#
# Begin patch
=== modified file 'lisp/ChangeLog'
--- lisp/ChangeLog 2011-01-27 07:54:04 +0000
+++ lisp/ChangeLog 2011-01-27 09:46:56 +0000
@@ -1,3 +1,8 @@
+2011-01-27 Deniz Dogan <deniz.a.m.dogan@gmail.com>
+
+ * vc/vc-bzr.el (vc-bzr-diff): Don't pass --diff-options unless
+ there are any diff switches.
+
2011-01-27 Glenn Morris <rgm@gnu.org>
* msb.el (msb-after-load-hooks): Make it an obsolete alias.
=== modified file 'lisp/vc/vc-bzr.el'
--- lisp/vc/vc-bzr.el 2011-01-25 04:08:28 +0000
+++ lisp/vc/vc-bzr.el 2011-01-27 09:46:56 +0000
@@ -674,18 +674,23 @@
(defun vc-bzr-diff (files &optional rev1 rev2 buffer)
"VC bzr backend for diff."
- ;; `bzr diff' exits with code 1 if diff is non-empty.
- (apply #'vc-bzr-command "diff" (or buffer "*vc-diff*")
- (if vc-disable-async-diff 1 'async) files
- "--diff-options" (mapconcat 'identity
- (vc-switches 'bzr 'diff)
- " ")
- ;; This `when' is just an optimization because bzr-1.2 is *much*
- ;; faster when the revision argument is not given.
- (when (or rev1 rev2)
- (list "-r" (format "%s..%s"
- (or rev1 "revno:-1")
- (or rev2 ""))))))
+ (let* ((switches (vc-switches 'bzr 'diff))
+ (args
+ (append
+ ;; Only add --diff-options if there are any diff switches.
+ (unless (zerop (length switches))
+ (list "--diff-options" (mapconcat 'identity switches " ")))
+ ;; This `when' is just an optimization because bzr-1.2 is *much*
+ ;; faster when the revision argument is not given.
+ (when (or rev1 rev2)
+ (list "-r" (format "%s..%s"
+ (or rev1 "revno:-1")
+ (or rev2 "")))))))
+ ;; `bzr diff' exits with code 1 if diff is non-empty.
+ (apply #'vc-bzr-command "diff" (or buffer "*vc-diff*")
+ (if vc-disable-async-diff 1 'async) files
+ args)))
+
;; FIXME: vc-{next,previous}-revision need fixing in vc.el to deal with
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^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH] Fix for vc-bzr-diff when vc-bzr-diff-switches is t
2011-01-27 9:50 ` Deniz Dogan
@ 2011-01-27 17:19 ` Stefan Monnier
0 siblings, 0 replies; 6+ messages in thread
From: Stefan Monnier @ 2011-01-27 17:19 UTC (permalink / raw)
To: Deniz Dogan; +Cc: Emacs-Devel devel
> Here is my third attempt given your comments.
Looks good, please apply.
> + * vc/vc-bzr.el (vc-bzr-diff): Don't pass --diff-options unless
> + there are any diff switches.
IIRC in such positive sentences, you want to use "some" rather than
"any".
Stefan
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2011-01-27 17:19 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2011-01-26 13:53 [PATCH] Fix for vc-bzr-diff when vc-bzr-diff-switches is t Deniz Dogan
2011-01-27 1:41 ` Glenn Morris
2011-01-27 2:53 ` Deniz Dogan
2011-01-27 3:13 ` Stefan Monnier
2011-01-27 9:50 ` Deniz Dogan
2011-01-27 17:19 ` Stefan Monnier
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