* bug#13004: 24.2; vc-diff from vc-log doesn't show diff before renames (for Mercurial backend).
@ 2012-11-26 18:29 Oleksandr Gavenko
2012-11-26 21:46 ` Glenn Morris
2012-11-27 21:01 ` Oleksandr Gavenko
0 siblings, 2 replies; 12+ messages in thread
From: Oleksandr Gavenko @ 2012-11-26 18:29 UTC (permalink / raw)
To: 13004
As always:
$ emacs -Q
Next I open any file from Mercurial repo which is "hg mv" or "hg cp".
If you build history "C-x v l" and try to look diff (log-view-diff or "d") for
changeset before rename you get message, like:
Finding changes in /home/user/devel/my-devel/gadict/en-pronunciation_ru.rst...
No changes between 214 and 215
while:
$ hg diff -r 215 en-pronunciation_ru.rst
diff --git a/en-spelling_ru.rst b/en-pronunciation_ru.rst
copy from en-spelling_ru.rst
copy to en-pronunciation_ru.rst
--- a/en-spelling_ru.rst
+++ b/en-pronunciation_ru.rst
@@ -1,5 +1,4 @@
.. -*- coding: utf-8 -*-
-
.. include:: header.rst
===================
In GNU Emacs 24.2.1 (x86_64-pc-linux-gnu, GTK+ Version 2.24.10)
of 2012-09-09 on trouble, modified by Debian
Also reproduced in GNU Emacs 24.2.50.1 (x86_64-unknown-linux-gnu, GTK+ Version
2.24.10):
$ bzr info -v
Related branches:
parent branch: bzr://bzr.savannah.gnu.org/emacs/emacs-24/
Branch history:
110934 revisions
10084 days old
first revision: Thu 1985-04-18 00:48:29 +0000
latest revision: Wed 2012-11-21 21:28:14 +0200
I expect that vc-view-diff follow history on copy as this do original CLI
client "hg".
--
Best regards!
^ permalink raw reply [flat|nested] 12+ messages in thread* bug#13004: 24.2; vc-diff from vc-log doesn't show diff before renames (for Mercurial backend).
2012-11-26 18:29 bug#13004: 24.2; vc-diff from vc-log doesn't show diff before renames (for Mercurial backend) Oleksandr Gavenko
@ 2012-11-26 21:46 ` Glenn Morris
2012-11-26 21:49 ` Glenn Morris
2012-11-27 21:01 ` Oleksandr Gavenko
1 sibling, 1 reply; 12+ messages in thread
From: Glenn Morris @ 2012-11-26 21:46 UTC (permalink / raw)
To: Oleksandr Gavenko; +Cc: 13004
Oleksandr Gavenko wrote:
> $ hg diff -r 215 en-pronunciation_ru.rst
Right, but what does
hg log en-pronunciation_ru.rst
show?
Emacs just calls hg log. It seems that by default this does not follow
renames. You can add "-f" to vc-hg-log-switches. I don't think this
should be there by default if it is not the default behaviour of hg
itself.
^ permalink raw reply [flat|nested] 12+ messages in thread
* bug#13004: 24.2; vc-diff from vc-log doesn't show diff before renames (for Mercurial backend).
2012-11-26 21:46 ` Glenn Morris
@ 2012-11-26 21:49 ` Glenn Morris
2012-11-26 21:54 ` Glenn Morris
0 siblings, 1 reply; 12+ messages in thread
From: Glenn Morris @ 2012-11-26 21:49 UTC (permalink / raw)
To: Oleksandr Gavenko; +Cc: 13004
Sorry, I didn't read properly. You were talking about calling "diff"
from a log buffer. I still think using log -f may help, since otherwise
it presumably looks like there is nothing to take a diff of. Does it
help?
^ permalink raw reply [flat|nested] 12+ messages in thread
* bug#13004: 24.2; vc-diff from vc-log doesn't show diff before renames (for Mercurial backend).
2012-11-26 21:49 ` Glenn Morris
@ 2012-11-26 21:54 ` Glenn Morris
2012-11-26 21:56 ` Glenn Morris
2023-12-15 21:09 ` Dmitry Gutov
0 siblings, 2 replies; 12+ messages in thread
From: Glenn Morris @ 2012-11-26 21:54 UTC (permalink / raw)
To: Oleksandr Gavenko; +Cc: 13004
Glenn Morris wrote:
> Sorry, I didn't read properly. You were talking about calling "diff"
> from a log buffer. I still think using log -f may help, since otherwise
> it presumably looks like there is nothing to take a diff of. Does it
> help?
Answering my own question, no.
But what does
hg diff -r 214 -r 215 en-pronunciation_ru.rst
report for you?
For me, an equivalent diff command does not report any differences.
So this looks like an hg issue, not an Emacs one.
^ permalink raw reply [flat|nested] 12+ messages in thread
* bug#13004: 24.2; vc-diff from vc-log doesn't show diff before renames (for Mercurial backend).
2012-11-26 21:54 ` Glenn Morris
@ 2012-11-26 21:56 ` Glenn Morris
2012-11-27 19:27 ` Oleksandr Gavenko
2023-12-15 21:09 ` Dmitry Gutov
1 sibling, 1 reply; 12+ messages in thread
From: Glenn Morris @ 2012-11-26 21:56 UTC (permalink / raw)
To: Oleksandr Gavenko; +Cc: 13004
A minimal test case starting from scratch would be helpful.
mkdir /tmp/test
cd /tmp/test
touch 1
hg init
hg add
hg commit -m "commit 1"
etc
^ permalink raw reply [flat|nested] 12+ messages in thread
* bug#13004: 24.2; vc-diff from vc-log doesn't show diff before renames (for Mercurial backend).
2012-11-26 21:56 ` Glenn Morris
@ 2012-11-27 19:27 ` Oleksandr Gavenko
2012-11-27 20:09 ` Glenn Morris
0 siblings, 1 reply; 12+ messages in thread
From: Oleksandr Gavenko @ 2012-11-27 19:27 UTC (permalink / raw)
To: Glenn Morris; +Cc: 13004
On 2012-11-26, Glenn Morris wrote:
> A minimal test case starting from scratch would be helpful.
>
> mkdir /tmp/test
> cd /tmp/test
> touch 1
> hg init
> hg add
> hg commit -m "commit 1"
>
md /tmp/test
hg init
echo xxx >>README
hg add
hg ci -m init
echo yyy >>README
hg ci -m before
hg mv README INSTALL
hg ci -m rename
echo zzz >>INSTALL
hg ci -m after
Open INSTALL file in Emacs. "C-x v l" ("vc-print-log"). You get (I drop some
output):
changeset: 3:00cf2a4ab691
tag: tip
files: INSTALL
description:
after
changeset: 2:c6a81dfaea75
files: INSTALL README
description:
rename
changeset: 1:9457c3fba41e
files: README
description:
before
changeset: 0:ae606f956f03
files: README
description:
init
In changeset 3 "d" (log-view-diff) fine:
diff --git a/INSTALL b/INSTALL
--- a/INSTALL
+++ b/INSTALL
@@ -1,2 +1,3 @@
xxx
yyy
+zzz
In changeset 2 "d" (log-view-diff) fine:
diff --git a/README b/INSTALL
copy from README
copy to INSTALL
In changeset 1 "d" (log-view-diff) fail: empty *vc-diff* buffer and message:
Finding changes in /tmp/test/INSTALL...
No changes between 0 and 1
While I run in pure shell:
$ hg diff -r 1 INSTALL
diff --git a/README b/INSTALL
rename from README
rename to INSTALL
--- a/README
+++ b/INSTALL
@@ -1,2 +1,3 @@
xxx
yyy
+zzz
Also you ask to call:
$ hg diff -r 1 -r 2 INSTALL
diff --git a/README b/INSTALL
copy from README
copy to INSTALL
--
Best regards!
^ permalink raw reply [flat|nested] 12+ messages in thread* bug#13004: 24.2; vc-diff from vc-log doesn't show diff before renames (for Mercurial backend).
2012-11-27 19:27 ` Oleksandr Gavenko
@ 2012-11-27 20:09 ` Glenn Morris
2012-11-27 20:51 ` Oleksandr Gavenko
0 siblings, 1 reply; 12+ messages in thread
From: Glenn Morris @ 2012-11-27 20:09 UTC (permalink / raw)
To: Oleksandr Gavenko; +Cc: 13004
Oleksandr Gavenko wrote:
> md /tmp/test
> hg init
> echo xxx >>README
> hg add
> hg ci -m init
> echo yyy >>README
> hg ci -m before
> hg mv README INSTALL
> hg ci -m rename
> echo zzz >>INSTALL
> hg ci -m after
Perfect, thanks. (Assuming md == mkdir && cd)
> Open INSTALL file in Emacs. "C-x v l" ("vc-print-log"). You get (I drop some
> output):
I had to add -f to vc-hg-log-switches. I'm guessing you have it in .hgrc
maybe.
> In changeset 2 "d" (log-view-diff) fine:
>
> diff --git a/README b/INSTALL
> copy from README
> copy to INSTALL
I had to add --git to vc-hg-diff-switches.
> In changeset 1 "d" (log-view-diff) fail: empty *vc-diff* buffer and message:
>
> Finding changes in /tmp/test/INSTALL...
> No changes between 0 and 1
[...]
> $ hg diff -r 1 -r 2 INSTALL
> diff --git a/README b/INSTALL
> copy from README
> copy to INSTALL
Obviously to compare with what you are asking Emacs to do, you need to run:
hg diff -r 0 -r 1 INSTALL
This prints nothing for me.
So I don't see any Emacs issue here.
^ permalink raw reply [flat|nested] 12+ messages in thread* bug#13004: 24.2; vc-diff from vc-log doesn't show diff before renames (for Mercurial backend).
2012-11-27 20:09 ` Glenn Morris
@ 2012-11-27 20:51 ` Oleksandr Gavenko
2012-11-28 20:26 ` Glenn Morris
0 siblings, 1 reply; 12+ messages in thread
From: Oleksandr Gavenko @ 2012-11-27 20:51 UTC (permalink / raw)
To: Glenn Morris; +Cc: 13004
On 2012-11-27, Glenn Morris wrote:
> Oleksandr Gavenko wrote:
>
>> md /tmp/test
>> hg init
>> echo xxx >>README
>> hg add
>> hg ci -m init
>> echo yyy >>README
>> hg ci -m before
>> hg mv README INSTALL
>> hg ci -m rename
>> echo zzz >>INSTALL
>> hg ci -m after
>
> Perfect, thanks. (Assuming md == mkdir && cd)
>
>> Open INSTALL file in Emacs. "C-x v l" ("vc-print-log"). You get (I drop some
>> output):
>
> I had to add -f to vc-hg-log-switches. I'm guessing you have it in .hgrc
> maybe.
>
Yes.
>> In changeset 2 "d" (log-view-diff) fine:
>>
>> diff --git a/README b/INSTALL
>> copy from README
>> copy to INSTALL
>
> I had to add --git to vc-hg-diff-switches.
>
>> In changeset 1 "d" (log-view-diff) fail: empty *vc-diff* buffer and message:
>>
>> Finding changes in /tmp/test/INSTALL...
>> No changes between 0 and 1
> [...]
>> $ hg diff -r 1 -r 2 INSTALL
>> diff --git a/README b/INSTALL
>> copy from README
>> copy to INSTALL
>
> Obviously to compare with what you are asking Emacs to do, you need to run:
>
> hg diff -r 0 -r 1 INSTALL
>
> This prints nothing for me.
>
> So I don't see any Emacs issue here.
Sorry. My fail. I understand that...
I put proxy utility to logging Emacs calls to 'hg':
#!/bin/sh
echo "$@" >>~/tmp/hg.log
/usr/bin/hg "$@"
so seen:
"diff" "-r" "0" "-r" "1" "INSTALL"
Next I reread "hg help diff". Previously I make call:
$ hg diff -r 1 INSTALL
but actually mean with "-c":
$ hg diff -c 1 INSTALL
But that command print nothing... So you right that I misunderstand.
I surprised that Mercurial doesn't allow follow history per file. Actually it
handle renames as special case for merges.
In case of SVN - Emacs work as I expect (more precisely I hoped that HG work
as SVN):
mkdir /tmp/test-svn
cd /tmp/test-svn
svnadmin create server-repo
svn co file:///tmp/test-svn/server-repo/ local-repo
cd local-repo
echo xxx >>README
svn add README
svn ci -m init
echo yyy >>README
svn ci -m before1
echo mmm >>README
svn ci -m before2
svn mv README INSTALL
svn ci -m rename
echo zzz >>INSTALL
svn ci -m after
So for revision r3 "before2" I get diff:
Index: README
===================================================================
--- README (revision 2)
+++ README (revision 3)
@@ -1,2 +1,3 @@
xxx
yyy
+mmm
"svn" "diff" "-r" "2:3" "INSTALL"
So for revision r2 "before1" I get diff:
Index: README
===================================================================
--- README (revision 1)
+++ README (revision 2)
@@ -1 +1,2 @@
xxx
+yyy
svn "diff" "-r" "1:2" "INSTALL"
**PS** Why Emacs uses -r R1 -r R2 for HG? "-c" - do job more better as it
actually compares to its first parent.
--
Best regards!
^ permalink raw reply [flat|nested] 12+ messages in thread* bug#13004: 24.2; vc-diff from vc-log doesn't show diff before renames (for Mercurial backend).
2012-11-27 20:51 ` Oleksandr Gavenko
@ 2012-11-28 20:26 ` Glenn Morris
0 siblings, 0 replies; 12+ messages in thread
From: Glenn Morris @ 2012-11-28 20:26 UTC (permalink / raw)
To: Oleksandr Gavenko; +Cc: 13004
Oleksandr Gavenko wrote:
> **PS** Why Emacs uses -r R1 -r R2 for HG? "-c" - do job more better as it
> actually compares to its first parent.
Because the Emacs command is a specific instance of the general question
"find the difference between revisions R1 and R2". Naively, I expect
these two to be exactly equivalent when R2 = R1 + 1. `bzr help diff'
says they are, I didn't check.
^ permalink raw reply [flat|nested] 12+ messages in thread
* bug#13004: 24.2; vc-diff from vc-log doesn't show diff before renames (for Mercurial backend).
2012-11-26 21:54 ` Glenn Morris
2012-11-26 21:56 ` Glenn Morris
@ 2023-12-15 21:09 ` Dmitry Gutov
1 sibling, 0 replies; 12+ messages in thread
From: Dmitry Gutov @ 2023-12-15 21:09 UTC (permalink / raw)
To: Glenn Morris, Oleksandr Gavenko; +Cc: 13004-done
Version: 30.1
On 26/11/2012 23:54, Glenn Morris wrote:
> Glenn Morris wrote:
>
>> Sorry, I didn't read properly. You were talking about calling "diff"
>> from a log buffer. I still think using log -f may help, since otherwise
>> it presumably looks like there is nothing to take a diff of. Does it
>> help?
> Answering my own question, no.
> But what does
>
> hg diff -r 214 -r 215 en-pronunciation_ru.rst
>
> report for you?
>
> For me, an equivalent diff command does not report any differences.
> So this looks like an hg issue, not an Emacs one.
It can be called an Hg issue, but it resembles Git in this: both 'diff'
and 'blame' commands require the file names that feature in the revision
asked about, not the "current" ones.
In the course of fixing bug#55871, I've also added Hg support, so now
you should have a button at the end of the revision history, if the last
commit contains renames, to show the log for the previous name(s).
Note that for this to work, "-f" should _not_ be in vc-hg-log-switches.
Closing, but feedback welcome.
^ permalink raw reply [flat|nested] 12+ messages in thread
* bug#13004: 24.2; vc-diff from vc-log doesn't show diff before renames (for Mercurial backend).
2012-11-26 18:29 bug#13004: 24.2; vc-diff from vc-log doesn't show diff before renames (for Mercurial backend) Oleksandr Gavenko
2012-11-26 21:46 ` Glenn Morris
@ 2012-11-27 21:01 ` Oleksandr Gavenko
2012-11-28 20:29 ` Glenn Morris
1 sibling, 1 reply; 12+ messages in thread
From: Oleksandr Gavenko @ 2012-11-27 21:01 UTC (permalink / raw)
To: Glenn Morris; +Cc: 13004
Additional info.
As we get know that HG doesn't allow follow history for HG another Emacs vc
module work as not expected.
So make test repo:
mkdir /tmp/test
cd /tmp/test
hg init
echo xxx >>README
hg add
hg ci -m init
echo yyy >>README
hg ci -m before
hg mv README INSTALL
hg ci -m rename
echo zzz >>INSTALL
hg ci -m after
open INSTALL file and annotate content (C-x v g runs the command vc-annotate).
Next go to previous version by "a" (vc-annotate-revision-previous-to-line) on
second line:
0 Tue Nov 27 21:12:00 2012 +0200 README: xxx
1 Tue Nov 27 21:12:23 2012 +0200 README: yyy (*1*)
3 Tue Nov 27 21:13:15 2012 +0200 INSTALL: zzz
So you move to:
0 Tue Nov 27 21:12:00 2012 +0200 README: xxx (*2*)
If you try move forward by "w" (vc-annotate-working-revision) Emacs print
error:
vc-annotate-warp-revision: Invalid argument to vc-annotate-warp-revision
While in case of SVN we back to original state (*1*).
--
Best regards!
^ permalink raw reply [flat|nested] 12+ messages in thread
* bug#13004: 24.2; vc-diff from vc-log doesn't show diff before renames (for Mercurial backend).
2012-11-27 21:01 ` Oleksandr Gavenko
@ 2012-11-28 20:29 ` Glenn Morris
0 siblings, 0 replies; 12+ messages in thread
From: Glenn Morris @ 2012-11-28 20:29 UTC (permalink / raw)
To: Oleksandr Gavenko; +Cc: 13004
Oleksandr Gavenko wrote:
> Additional info.
(Seems more like a different bug report to me.)
> Next go to previous version by "a" (vc-annotate-revision-previous-to-line) on
> second line:
>
> 0 Tue Nov 27 21:12:00 2012 +0200 README: xxx
> 1 Tue Nov 27 21:12:23 2012 +0200 README: yyy (*1*)
> 3 Tue Nov 27 21:13:15 2012 +0200 INSTALL: zzz
>
> So you move to:
>
> 0 Tue Nov 27 21:12:00 2012 +0200 README: xxx (*2*)
Emacs is now looking at revision 0 of file "README".
> If you try move forward by "w" (vc-annotate-working-revision) Emacs print
> error:
>
> vc-annotate-warp-revision: Invalid argument to vc-annotate-warp-revision
Ie, you try to jump to the working revision of file "README".
But file README has no working revision, hence the error.
I have no idea what, if anything, to do about that.
^ permalink raw reply [flat|nested] 12+ messages in thread
end of thread, other threads:[~2023-12-15 21:09 UTC | newest]
Thread overview: 12+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2012-11-26 18:29 bug#13004: 24.2; vc-diff from vc-log doesn't show diff before renames (for Mercurial backend) Oleksandr Gavenko
2012-11-26 21:46 ` Glenn Morris
2012-11-26 21:49 ` Glenn Morris
2012-11-26 21:54 ` Glenn Morris
2012-11-26 21:56 ` Glenn Morris
2012-11-27 19:27 ` Oleksandr Gavenko
2012-11-27 20:09 ` Glenn Morris
2012-11-27 20:51 ` Oleksandr Gavenko
2012-11-28 20:26 ` Glenn Morris
2023-12-15 21:09 ` Dmitry Gutov
2012-11-27 21:01 ` Oleksandr Gavenko
2012-11-28 20:29 ` Glenn Morris
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