etags: M-. looks for an uncompressed Emacs Lisp source file, but make install installs it gzipped

[Luca Saiu <positron@gnu.org>]

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Hello.
I compiled and installed the 22.0.99.1 pretest from alpha.gnu.org:

  ./configure --with-png --with-gtk --with-xpm --with-jpeg --with-tiff
- --with-sound --prefix=/home/luca/usr && make bootstrap -j 4 && make
install

Note that the directory /home/luca/usr existed but was *empty*.
All environment variables were already correctly setup:

[luca@babaorum ~]$ env
GREEN=\033[0m\033[32m
BLACK=\033[0m\033[30m
MANPATH=/home/luca/usr/man:/usr/godi/man:/usr/share/man
SSH_AGENT_PID=7403
TERM=xterm
DESKTOP_STARTUP_ID=
SHELL=/bin/bash
NOATTR=\033[0m
YELLOW=\033[1m\033[33m
LIGHTBLUE=\033[1m\033[34m
LIBRARY_PATH=/home/luca/usr/lib:
GTK_RC_FILES=/etc/gtk/gtkrc:/home/luca/.gtkrc-1.2-gnome2
WINDOWID=86226876
OLDPWD=/home/luca/usr/info
LC_ALL=POSIX
USER=luca
LD_LIBRARY_PATH=/home/luca/usr/lib:
ENDTITLE=\007
BEGINTITLE=\033]0
BROWN=\033[0m\033[33m
BLUE=\033[0m\033[34m
GNOME_KEYRING_SOCKET=/tmp/keyring-3uqBV5/socket
SSH_AUTH_SOCK=/tmp/ssh-cIKODt6834/agent.6834
SESSION_MANAGER=local/babaorum:/tmp/.ICE-unix/6834
USERNAME=luca
DEFAULTS_PATH=/home/luca/.cache/fileSlbrDA
LIGHTGRAY=\033[0m\033[37m
XPSERVERLIST=:64
DESKTOP_SESSION=gnome
PATH=/home/luca/usr/bin:/home/luca/bin:/usr/godi/bin:/usr/godi/sbin:/usr/local/bin:/usr/bin:/bin:/usr/games
CLEAR=\033[2J
C_INCLUDE_PATH=/home/luca/usr/include:/usr/include:/usr/X11R6/include
GDM_XSERVER_LOCATION=local
DARKGRAY=\033[1m\033[30m
PWD=/home/luca
EDITOR=emacs
LANG=en_US.UTF-8
LIGHTGREEN=\033[1m\033[32m
GDM_LANG=en_US.UTF-8
MANDATORY_PATH=/home/luca/.cache/file64fHIs
ESC=\033
PS1=\[\033[0m\033[31m\][\u@\h \w]\\$ \[\033[0m\033[32m\]
BLINK=\033[5m
GDMSESSION=gnome
RED=\033[0m\033[31m
HOME=/home/luca
SHLVL=1
LANGUAGE=POSIX
PURPLE=\033[0m\033[35m
GNOME_DESKTOP_SESSION_ID=Default
LIGHTRED=\033[1m\033[31m
LIGHTCYAN=\033[1m\033[36m
REVERSE=\033[7m
LIGHTPURPLE=\033[1m\033[35m
LOGNAME=luca
DBUS_SESSION_BUS_ADDRESS=unix:abstract=/tmp/dbus-hPM2e97j3C,guid=6fb9be6b015f87ab38525400462df4d3
TOPLEFT=\033[1;1H
INFOPATH=/home/luca/usr/info:
DISPLAY=:0.0
CYAN=\033[0m\033[36m
WHITE=\033[1m\033[37m
COLORTERM=gnome-terminal
XAUTHORITY=/home/luca/.Xauthority
_=/usr/bin/env


Note that the `install' Makefile target installs most Emacs Lisp source
files *gzipped*.

Ok, then I generated TAGS from /home/luca/usr/share/emacs:
  etags `find -name \*.el` `find -name \*.el.gz`

When looking up a tag referring a compressed ELisp file with M-.,
Emacs fails to find the correct file, as it tries to open a non-existing
*uncompressed* version.

For example with M-. goto-line
I see this in the minibuffer:

File /home/luca/usr/share/emacs/22.0.99/lisp/simple.el not found

/home/luca/usr/share/emacs/22.0.99/lisp/simple.el in fact is not there, but
/home/luca/usr/share/emacs/22.0.99/lisp/simple.el.gz exists, and its
content is correct (it's gzipped, of course).

Uncompressing all installed gzipped elisp files and regenerating TAGS is
a way to work around the problem (tested).

I don't know whether this behavior is consistent with old releases, but
it's definitely not what the user expects.


Other info:

In GNU Emacs 22.0.99.1 (i686-pc-linux-gnu, GTK+ Version 2.8.20)
 of 2007-04-26 on babaorum
Windowing system distributor `The X.Org Foundation', version 11.0.70101000
configured using `configure  '--with-png' '--with-gtk' '--with-xpm'
'--with-jpeg' '--with-tiff' '--with-sound' '--prefix=/home/luca/usr''

Important settings:
  value of $LC_ALL: POSIX
  value of $LC_COLLATE: nil
  value of $LC_CTYPE: nil
  value of $LC_MESSAGES: nil
  value of $LC_MONETARY: nil
  value of $LC_NUMERIC: nil
  value of $LC_TIME: nil
  value of $LANG: en_US.UTF-8
  locale-coding-system: nil
  default-enable-multibyte-characters: t

Major mode: Fundamental

Minor modes in effect:
  show-paren-mode: t
  tooltip-mode: t
  mouse-wheel-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  blink-cursor-mode: t
  unify-8859-on-encoding-mode: t
  utf-translate-cjk-mode: t
  auto-compression-mode: t
  column-number-mode: t
  line-number-mode: t
  transient-mark-mode: t

Recent input:
M-x r e <tab> p <tab> C-g <down> <down> <down> <down>
<down> <down> <down> <down> <down> <down> <down> <down>
<down> <down> <left> <right> <down> <down> <down> <down>
<down> <down> <left> <right> <down> <down> <down> <down>
<down> <down> <down> <down> <down> <down> <down> M-x
r e p o <tab> r <tab> e <backspace> b <tab> <retur
n>

Recent messages:
Loading /home/luca/usr/share/emacs/site-lisp/w3m/w3m.el (source)...
Loading cl-macs...done
Loading /home/luca/usr/share/emacs/site-lisp/w3m/w3m.el (source)...done
For information about the GNU Project and its goals, type C-h C-p. [2 times]
Making completion list... [2 times]
Quit
Making completion list...
Loading emacsbug...
Loading regexp-opt...done
Loading emacsbug...done

Thanks,

- --
Luca Saiu
Author of GNU epsilon: http://www.gnu.org/software/epsilon
http://www-lipn.lipn.univ-paris13.fr/~saiu
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