bug#31202: 26.1; Emacs Info top-level Directory node omits some Info files

bug#31202: 26.1; Emacs Info top-level Directory node omits some Info files

[N. Jackson]

Observed behaviour: The Emacs Info Directory node -- the top-level
node in Emacs Info -- does not list all the Info files "specified
by" the Info-directory-list variable.

Expected behaviour: All the Info files "specified by" the
Info-directory-list variable are included in the top-level
Directory node.

Here /usr/local/share/info/ is included in the
Info-default-directory-list variable and -- after I have started
the Emacs Info viewer (with `M-x info RET', for example) -- it is
also included in the Info-directory-list variable. Yet the .info
files in /usr/local/share/info/ are not shown in the Directory
node at the top level of the Emacs Info viewer.

Specifically:

  $ ls -l /usr/local/share/info
  total 396
  -rw-r--r--. 1 root root  65223 Dec 25  2016 bbdb.info
  -rw-r--r--. 1 root root 335184 Apr 13 14:25 dico.info
  -rw-rw----. 1 root root    832 Apr 13 14:25 dir

  $ src/emacs -Q &

  M-x info RET

This puts me in a buffer showing the Emacs Info Directory, but
unexpectedly, it has no entry for BBDB and no entry for Dico.

However

  C-h v Info-directory-list RET

gives:

  Info-directory-list is a variable defined in ‘info.el’.
  Its value is
  ("/data/projects/vc/emacs/git/emacs/info/" "/usr/local/share/info/" "/usr/share/info/" "/usr/local/share/info/")
  ...

so, IIUC, the .info files in /usr/local/share/info/ (i.e. bbdb and
dico) should be included in the Emacs Info Directory node.

Note that outside of Emacs if I do

  $ info bbdb &

or

  $ info dico &

the stand alone Info viewer has no problem finding and displaying
either these two .info files.



In GNU Emacs 26.1 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.22.21)
 of 2018-04-17 built on moondust.localdomain
Repository revision: 3bdc9a1683d803d291586e83e7275936301d94cf
Windowing system distributor 'Fedora Project', version 11.0.11903000
System Description:	Fedora release 26 (Twenty Six)

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Configured using:
 'configure 'CFLAGS=-O0 -g3 -gdwarf-4''

Configured features:
XPM JPEG TIFF GIF PNG RSVG IMAGEMAGICK SOUND DBUS GSETTINGS NOTIFY ACL
LIBSELINUX GNUTLS LIBXML2 FREETYPE LIBOTF XFT ZLIB TOOLKIT_SCROLL_BARS
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Important settings:
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Major mode: Group

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Memory information:
((conses 16 590451 71027)
 (symbols 48 105935 1)
 (miscs 40 21962 11177)
 (strings 32 167489 17612)
 (string-bytes 1 5976683)
 (vectors 16 49140)
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 (buffers 992 45))

bug#31202: 26.1; Emacs Info top-level Directory node omits some Info files

[N. Jackson]

tags 31202 notabug
close 31202
stop

Sorry. I realised after poking around in info.el that my system
was mis-configured. (I'm not sure why, possibly a bug in something
other than Emacs.)

At 20:35 -0400 on Tuesday 2018-04-17, N. Jackson wrote:
>
>   $ ls -l /usr/local/share/info
>   total 396
>   -rw-r--r--. 1 root root  65223 Dec 25  2016 bbdb.info
>   -rw-r--r--. 1 root root 335184 Apr 13 14:25 dico.info
>   -rw-rw----. 1 root root    832 Apr 13 14:25 dir

Indeed, and

  $ su -c 'chmod o+r /usr/local/share/info/dir'

fixed the problem.

Emacs naturally cannot use the dir file when building the
top-level Directory node if it cannot read the file.

After the above configuration change everything works perfectly
the way I would expect.

Sorry for the noise.

N.