Track down a failure involving shr

[Harry Putnam]

Setup: Gentoo linux (new install)
emacs-25
gentoo pkg emacs-vcs which installs from the bzr trunk

I'm attempting to change from using w3m to render html to using the
default shr.

I've gone thru my init files and removed all reference to w3m or
emacs-w3m.

I'm pretty sure that change is the source of my current problem but
not thinking of how to track it down.

Or maybe something to do with using the changing devel version of
emacs.

Cutting to the chase...

So far, with every message I've opened from the `gwene' group:
gwene.com.stackoverflow.feeds.tag.emacs

[NOTE: I have not seen the problem on any group I read other than
gwene groups]

When I attempt to open a posting I get:

[From the *Messages* buffer]

mm-shr: Symbol's function definition is void:
libxml-parse-html-region

The message is opened like one expects to see when opening raw message
with C+u g.

(back trace is posted near the end)

Just a quick grep on libxml-parse-html-region in the lisp files shows
that string is present in nearly 20 files some of that figure is
caused by finding the string in both elc and el versions. But still a
bit daunting as to how to track this down.

So, I could use a bit of coaching on tracking this down.

Since it is the devel version of emacs, I probably should be posting
on the devel group, but man, those folks look to be very busy right now.

So anyone have some ideas about what might be going on.
------- ------- ---=--- ------- -------

Back trace:

Debugger entered--Lisp error: (void-function libxml-parse-html-region)
libxml-parse-html-region(1 2208)
mm-shr((#<buffer *mm*> ("text/html" (charset . "utf-8")) 8bit nil nil nil nil nil))
mm-inline-text-html((#<buffer *mm*> ("text/html" (charset . "utf-8")) 8bit nil nil nil nil nil))
mm-display-inline((#<buffer *mm*> ("text/html" (charset . "utf-8")) 8bit nil nil nil nil nil))
gnus-mime-display-single((#<buffer *mm*> ("text/html" (charset . "utf-8")) 8bit nil nil nil nil nil))
gnus-mime-display-part((#<buffer *mm*> ("text/html" (charset . "utf-8")) 8bit nil nil nil nil nil))
gnus-display-mime()
gnus-article-prepare-display()
gnus-article-prepare(11305 nil)
gnus-summary-display-article(11305 nil)
gnus-summary-select-article(nil nil pseudo)
gnus-summary-scroll-up(1)
funcall-interactively(gnus-summary-scroll-up 1)
call-interactively(gnus-summary-scroll-up nil nil)
command-execute(gnus-summary-scroll-up)

[Adam Sjøgren]

Post by Harry Putnam
Setup: Gentoo linux (new install)
emacs-25
gentoo pkg emacs-vcs which installs from the bzr trunk

Did you install libxml2 and tell Gentoo to build GNU Emacs with it?


Best regards,

Adam

[Steinar Bang]

Post by Harry Putnam
Setup: Gentoo linux (new install)
emacs-25
gentoo pkg emacs-vcs which installs from the bzr trunk

I thought emacs had moved from bzr to git?

[Clemens Schüller]

Hello!

Post by Steinar Bang

Post by Harry Putnam
Setup: Gentoo linux (new install)
emacs-25
gentoo pkg emacs-vcs which installs from the bzr trunk

I thought emacs had moved from bzr to git?

Thats true. And in case of gentoo there exists a new ebuild file for
emacs-vcs.

Please make a emerge --sync and then a
emerge -av "=app-editors/emacs-vcs-25.0.9999-r1"
to install the git (and not the bzr) repo.

[Harry Putnam]

Post by Clemens Schüller
Hello!

Post by Steinar Bang

Post by Harry Putnam
Setup: Gentoo linux (new install)
emacs-25
gentoo pkg emacs-vcs which installs from the bzr trunk

I thought emacs had moved from bzr to git?

Thats true. And in case of gentoo there exists a new ebuild file for
emacs-vcs.
Please make a emerge --sync and then a
emerge -av "=app-editors/emacs-vcs-25.0.9999-r1"
to install the git (and not the bzr) repo.

I was wrong about it being bzr. It was git.

OK, but I'm getting some fluff from emerge I don't really understand.

------- ------- ---=--- ------- -------

[ebuild U *] app-editors/emacs-vcs-25.0.9999-r1:25
[25.0.50_pre20141130:25] USE="X Xaw3d athena gif gpm gtk gtk3
imagemagick inotify jpeg png svg tiff xpm zlib -acl -alsa (-aqua)
-dbus -games -gconf -gfile -gnutls -gsettings -gzip-el -hesiod
-kerberos -libxml2 -livecd -m17n-lib -motif -pax_kernel (-selinux)
-sound -source -toolkit-scroll-bars -wide-int -xft" 0 KiB

Total: 1 package (1 upgrade), Size of downloads: 0 KiB

The following keyword changes are necessary to proceed: (see
"package.accept_keywords" in the portage(5) man page for more
details) # required by =app-editors/emacs-vcs-25.0.9999-r1 (argument)
=app-editors/emacs-vcs-25.0.9999-r1 **
/
NOTE: The --autounmask-keep-masks option will prevent emerge
from creating package.unmask or ** keyword changes.
------- ------- ---=--- ------- -------

I'm not really sure what that means, but I guess it means to lierally
create the `packag.accept_keywords' file containing:

=app-editors/emacs-vcs-25.0.9999-r1 **

At any rate, that is what I did and it seems to have smoothed things out

Now I need to get some of those USE flags set differently.

Any advice what to do with the libxml2?

It was turned off on the last go around so is it posible it needs to
be ON to make that related error I posted go away?

Any way, I will now close all emacs including this one and fiddle with
thing until I can see a clean install

More later...

[Adam Sjøgren]

Post by Harry Putnam
It was turned off on the last go around so is it posible it needs to
be ON to make that related error I posted go away?

It needs to be turned on when Emacs is built for shr to work.

Maybe you need to consult some Gentoo folks about this?

I would imagine that you just had to install the libxml2 development
package before the emacs package, but I have never used Gentoo.


Best regards,

Adam

[Clemens Schüller]

Hello!

Post by Harry Putnam
OK, but I'm getting some fluff from emerge I don't really understand.
------- ------- ---=--- ------- -------
[ebuild U *] app-editors/emacs-vcs-25.0.9999-r1:25
[25.0.50_pre20141130:25] USE="X Xaw3d athena gif gpm gtk gtk3
imagemagick inotify jpeg png svg tiff xpm zlib -acl -alsa (-aqua)
-dbus -games -gconf -gfile -gnutls -gsettings -gzip-el -hesiod
-kerberos -libxml2 -livecd -m17n-lib -motif -pax_kernel (-selinux)
-sound -source -toolkit-scroll-bars -wide-int -xft" 0 KiB
Total: 1 package (1 upgrade), Size of downloads: 0 KiB
The following keyword changes are necessary to proceed: (see
"package.accept_keywords" in the portage(5) man page for more
details) # required by =app-editors/emacs-vcs-25.0.9999-r1 (argument)
=app-editors/emacs-vcs-25.0.9999-r1 **
/
NOTE: The --autounmask-keep-masks option will prevent emerge
from creating package.unmask or ** keyword changes.
------- ------- ---=--- ------- -------
I'm not really sure what that means, but I guess it means to lierally

--8<---------------cut here---------------start------------->8---
[***@cougar: /etc/portage]# tail -n6 package.unmask
# required by =app-editors/emacs-vcs-25.0.9999-r1 (argument)
# /usr/portage/profiles/package.mask:
# Ulrich Müller <***@gentoo.org> (12 Nov 2014)
# Temporary mask because of problems with upstream git repo;
# fallback to live bzr ebuilds.
=app-editors/emacs-vcs-25.0.9999-r1
--8<---------------cut here---------------end--------------->8---

Could you try it with this oneliner in the package.unmask

Post by Harry Putnam
=app-editors/emacs-vcs-25.0.9999-r1 **
At any rate, that is what I did and it seems to have smoothed things out
Now I need to get some of those USE flags set differently.
Any advice what to do with the libxml2?

Cutout from my package.use

--8<---------------cut here---------------start------------->8---
app-editors/emacs-vcs xft gconf gfile gsettings gzip-el imagemagick libxml2 m17n-lib sound toolkit-scroll-bars
--8<---------------cut here---------------end--------------->8---

It should install the libxml2 package automatically.

[Harry Putnam]

Post by Clemens Schüller
Cutout from my package.use
app-editors/emacs-vcs xft gconf gfile gsettings gzip-el imagemagick libxml2 m17n-lib sound toolkit-scroll-bars
It should install the libxml2 package automatically.

Thanks, I ended up with package.use like this:

=app-editors/emacs-vcs-25.0.9999-r1 Xaw3d athena libxml2 toolkit-scroll-bars imagemagick -acl -alsa -gtk -gtk3

And passed in 2 additional configure flags for good measure. Only the
first of which was probably needed:

EXTRA_ECONF="--with-x-toolkit=LUCID --with-toolkit-scroll-bars" \
emerge -v app/editors-[...]

[ebuild R *] app-editors/emacs-vcs-25.0.9999-r1:25

USE="X Xaw3d athena dbus gif gpm imagemagick inotify jpeg libxml2 png
svg tiff toolkit-scroll-bars xpm zlib -acl -alsa (-aqua) -games -gconf
-gfile -gnutls -gsettings -gtk -gtk3 -gzip-el -hesiod -kerberos
-livecd -m17n-lib -motif -pax_kernel (-selinux) -sound -source
-wide-int -xft"

Anyway, now emacs doesn't balk at opening gwene msgs.

[Harry Putnam]

Post by Steinar Bang

Post by Harry Putnam
Setup: Gentoo linux (new install)
emacs-25
gentoo pkg emacs-vcs which installs from the bzr trunk

I thought emacs had moved from bzr to git?

I'm not really sure where emerge gets the source... I just `thought' it
would be bzr.

And the pkg was built using these use flags+

+ flags (those that are turned on):
X Xaw3d athena gif gpm gtk gtk3 imagemagick inotify jpeg png svg tiff
xpm zlib

- Flags (those that are turned off):
-acl -alsa (-aqua) -dbus -games -gconf -gfile -gnutls -gsettings
---gzip-el -hesiod -kerberos -libxml2 -livecd -m17n-lib -motif
-pax_kernel (-selinux) -sound -source -toolkit-scroll-bars -wide-int
--xft

So, infact emerge told the process NOT to build against libxml2

This is the exact version I installed:
app-editors/emacs-vcs-25.0.50_pre20141130:25

The ebuild shows the sources URI as: git://git.sv.gnu.org/emacs.git

So, I should have checked I guess, but I `thought' bzr was the repo
used.