GNU bug report logs - #26928
25.1; The xref-find-definitions cannot recognize the `tags' file generated by ctags

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Package: emacs;

Reported by: palagend <palagend <at> 163.com>

Date: Sun, 14 May 2017 16:59:02 UTC

Severity: normal

Tags: notabug

Found in version 25.1

Done: npostavs <at> users.sourceforge.net

Bug is archived. No further changes may be made.

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Report forwarded to bug-gnu-emacs <at> gnu.org:
bug#26928; Package emacs. (Sun, 14 May 2017 16:59:02 GMT) Full text and rfc822 format available.

Acknowledgement sent to palagend <palagend <at> 163.com>:
New bug report received and forwarded. Copy sent to bug-gnu-emacs <at> gnu.org. (Sun, 14 May 2017 16:59:02 GMT) Full text and rfc822 format available.

Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: palagend <palagend <at> 163.com>
To: bug-gnu-emacs <at> gnu.org
Subject: 25.1;
 The xref-find-definitions cannot recognize the `tags' file generated
 by ctags
Date: Sun, 14 May 2017 22:12:23 +0800
I use `ctags -R' command in the working directory `/usr/include',
generating a file named `tags' in the directory.And then I open one file in
`/usr/include' and then key in `M-x xref-find-definitions',the emacs
says that the tags file is not valid.




In GNU Emacs 25.1.1 (x86_64-redhat-linux-gnu, GTK+ Version 3.22.4)
 of 2016-12-15 built on buildvm-30.phx2.fedoraproject.org
Windowing system distributor 'Fedora Project', version 11.0.11903000
System Description:	Fedora release 25 (Twenty Five)

Configured using:
 'configure --build=x86_64-redhat-linux-gnu
 --host=x86_64-redhat-linux-gnu --program-prefix=
 --disable-dependency-tracking --prefix=/usr --exec-prefix=/usr
 --bindir=/usr/bin --sbindir=/usr/sbin --sysconfdir=/etc
 --datadir=/usr/share --includedir=/usr/include --libdir=/usr/lib64
 --libexecdir=/usr/libexec --localstatedir=/var
 --sharedstatedir=/var/lib --mandir=/usr/share/man
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 --with-rsvg --with-tiff --with-xft --with-xpm --with-x-toolkit=gtk3
 --with-gpm=no --with-xwidgets build_alias=x86_64-redhat-linux-gnu
 host_alias=x86_64-redhat-linux-gnu 'CFLAGS=-DMAIL_USE_LOCKF -O2 -g
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 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4
 -grecord-gcc-switches -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1
 -m64 -mtune=generic' LDFLAGS=-Wl,-z,relro
 PKG_CONFIG_PATH=:/usr/lib64/pkgconfig:/usr/share/pkgconfig'

Configured features:
XPM JPEG TIFF GIF PNG RSVG IMAGEMAGICK SOUND DBUS GCONF GSETTINGS NOTIFY
ACL LIBSELINUX GNUTLS LIBXML2 FREETYPE M17N_FLT LIBOTF XFT ZLIB
TOOLKIT_SCROLL_BARS GTK3 X11 XWIDGETS

Important settings:
  value of $LANG: zh_CN.UTF-8
  value of $XMODIFIERS: @im=ibus
  locale-coding-system: utf-8-unix

Major mode: Help

Minor modes in effect:
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  buffer-read-only: t
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Recent messages:
Checking 24 files in /usr/share/emacs/25.1/lisp/cedet...
Checking 57 files in /usr/share/emacs/25.1/lisp/calendar...
Checking 87 files in /usr/share/emacs/25.1/lisp/calc...
Checking 120 files in /usr/share/emacs/25.1/lisp/obsolete...
Checking for load-path shadows...done
Auto-saving...
Message modified; kill anyway? (y or n) y

Making completion list...
user-error: Previous command was not a yank

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Memory information:
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Information forwarded to bug-gnu-emacs <at> gnu.org:
bug#26928; Package emacs. (Sun, 14 May 2017 18:16:01 GMT) Full text and rfc822 format available.

Message #8 received at 26928 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: palagend <palagend <at> 163.com>
Cc: 26928 <at> debbugs.gnu.org
Subject: Re: bug#26928: 25.1;
 The xref-find-definitions cannot recognize the `tags' file generated
 by ctags
Date: Sun, 14 May 2017 21:15:08 +0300
> From: palagend <palagend <at> 163.com>
> Date: Sun, 14 May 2017 22:12:23 +0800
> 
> I use `ctags -R' command in the working directory `/usr/include',
> generating a file named `tags' in the directory.And then I open one file in
> `/usr/include' and then key in `M-x xref-find-definitions',the emacs
> says that the tags file is not valid.

You need to use 'etags', not 'ctags'.  It will create a file named
'TAGS', in upper-case.  Try "M-x xref-find-definitions" after telling
Emacs to read it with "M-x visit-tags-table".

If 'etags' produces a TAGS file that xref-find-definitions says is
invalid, please send the TAGS file as an attachment, so we could
investigate.

Thanks.




Added tag(s) notabug. Request was from npostavs <at> users.sourceforge.net to control <at> debbugs.gnu.org. (Sat, 20 May 2017 20:33:02 GMT) Full text and rfc822 format available.

Information forwarded to bug-gnu-emacs <at> gnu.org:
bug#26928; Package emacs. (Thu, 15 Jun 2017 00:07:02 GMT) Full text and rfc822 format available.

Message #13 received at 26928 <at> debbugs.gnu.org (full text, mbox):

From: npostavs <at> users.sourceforge.net
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: palagend <palagend <at> 163.com>, 26928 <at> debbugs.gnu.org
Subject: Re: bug#26928: 25.1;
 The xref-find-definitions cannot recognize the `tags' file generated
 by ctags
Date: Wed, 14 Jun 2017 20:08:17 -0400
close 26928 
quit

Eli Zaretskii <eliz <at> gnu.org> writes:

>> From: palagend <palagend <at> 163.com>
>> Date: Sun, 14 May 2017 22:12:23 +0800
>> 
>> I use `ctags -R' command in the working directory `/usr/include',
>> generating a file named `tags' in the directory.And then I open one file in
>> `/usr/include' and then key in `M-x xref-find-definitions',the emacs
>> says that the tags file is not valid.
>
> You need to use 'etags', not 'ctags'.  It will create a file named
> 'TAGS', in upper-case.  Try "M-x xref-find-definitions" after telling
> Emacs to read it with "M-x visit-tags-table".

I'm therefore closing this as notabug.




bug closed, send any further explanations to 26928 <at> debbugs.gnu.org and palagend <palagend <at> 163.com> Request was from npostavs <at> users.sourceforge.net to control <at> debbugs.gnu.org. (Thu, 15 Jun 2017 00:07:02 GMT) Full text and rfc822 format available.

bug archived. Request was from Debbugs Internal Request <help-debbugs <at> gnu.org> to internal_control <at> debbugs.gnu.org. (Thu, 13 Jul 2017 11:24:05 GMT) Full text and rfc822 format available.

This bug report was last modified 6 years and 260 days ago.

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Copyright (C) 1999 Darren O. Benham, 1997,2003 nCipher Corporation Ltd, 1994-97 Ian Jackson.