Package: emacs;
Reported by: Eli Zaretskii <eliz <at> gnu.org>
Date: Sat, 24 Dec 2011 09:11:01 UTC
Severity: normal
Found in version 24.0.92
Done: Andreas Schwab <schwab <at> linux-m68k.org>
Bug is archived. No further changes may be made.
View this message in rfc822 format
From: Eli Zaretskii <eliz <at> gnu.org> To: 10357 <at> debbugs.gnu.org Cc: Francesco Potortì <pot <at> gnu.org> Subject: bug#10357: 24.0.92; etags misses C tags due to brackets Date: Sat, 24 Dec 2011 11:08:07 +0200
cd src
../lib-src/etags xdisp.c -o xdisp.TAGS
Then look at xdisp.TAGS and you will see many functions missing from
the tags table. Specifically, all the functions between lines 9097
and 21242 are not tagged. Here's the relevant excerpt from the tags
table:
in_display_vector_p ^?9025,284143
add_to_log ^?9042,284592
message_log_maybe_newline ^?9079,285427
message_dolog ^?9096,285971
display_count_lines ^?21243,659558
display_string ^?21385,663522
Note the gap between line number 9096 and 21243. This misses a large
number of functions that are actually present in xdisp.c.
What causes that is this fragment from message_dolog:
char dupstr[sizeof " [ times]"
+ INT_STRLEN_BOUND (printmax_t)];
If you remove it, the problem goes away.
Looking at the code in etags.c:C_entries, I think that the problem
might be here:
else if (bracketlev > 0)
{
switch (c)
{
case ']':
if (--bracketlev > 0)
continue;
break;
case '\0':
CNL_SAVE_DEFINEDEF ();
break;
}
continue;
}
This seems to ignore everything except ']' inside brackets [], but it
does not pay attention to strings, comments, 'c' character constants
etc. that can happen inside brackets, and which can also include
bracket characters.
In GNU Emacs 24.0.92.1 (i386-mingw-nt5.1.2600)
of 2011-12-02 on HOME-C4E4A596F7
Windowing system distributor `Microsoft Corp.', version 5.1.2600
configured using `configure --with-gcc (3.4)'
Important settings:
value of $LC_ALL: nil
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: ENU
value of $XMODIFIERS: nil
locale-coding-system: cp1255
default enable-multibyte-characters: t
Major mode: Mail
Minor modes in effect:
shell-dirtrack-mode: t
auto-fill-function: mail-mode-auto-fill
flyspell-mode: t
diff-auto-refine-mode: t
desktop-save-mode: t
show-paren-mode: t
display-time-mode: t
tooltip-mode: t
mouse-wheel-mode: t
tool-bar-mode: t
menu-bar-mode: t
file-name-shadow-mode: t
global-font-lock-mode: t
font-lock-mode: t
blink-cursor-mode: t
auto-composition-mode: t
auto-encryption-mode: t
auto-compression-mode: t
temp-buffer-resize-mode: t
line-number-mode: t
abbrev-mode: t
Recent input:
C-z C-z C-z C-z C-z C-z C-z C-z C-z C-z C-z C-z C-z
C-z C-z C-z C-z C-z C-z C-z C-z C-z C-x b <return>
C-SPC C-u 2 1 2 4 3 C-x g <prior> <prior> <prior> <prior>
<prior> <prior> <prior> <prior> <prior> C-z C-z C-z
C-z C-z C-z C-z C-z C-z C-z C-z C-z C-z C-z C-z C-z
C-z C-z C-z C-z C-z C-z C-z C-z C-z C-z C-z <next>
<prior> C-x C-x C-x b <return> M-z M-z M-z M-z M-z
M-z M-z M-z M-z M-z M-z M-z M-z M-z M-z M-z M-z M-z
M-z M-z M-z M-z M-z M-z M-z M-z M-z M-z M-z M-z M-z
M-z M-z M-z M-z M-z M-z C-z C-z C-z C-z C-z C-z C-z
C-z C-z C-z C-z C-z C-z C-z C-z C-z C-z C-z C-z C-z
C-z C-z C-z C-z M-z M-z M-z M-z M-z M-z M-z M-z M-z
M-z M-z M-z M-z M-z M-z M-z M-z M-z M-z M-z M-z M-z
M-z M-z <next> <down> <down> <down> <down> <down> <down>
<down> <down> <down> <down> <down> <down> <down> <down>
<down> <C-right> <right> <right> C-r C-w C-r <M-left>
<prior> C-z C-z C-z C-z C-z C-z C-z C-z C-z C-z C-z
C-z C-z C-z C-z C-z C-z C-z C-z C-z C-z C-z C-z C-z
C-z C-z C-x C-x <M-left> <prior> <prior> <prior> <next>
<next> <next> <next> <next> <next> <prior> <next> <next>
<next> <next> <next> <next> <prior> <next> <next> <next>
<next> <next> <next> <prior> <prior> <prior> <prior>
<prior> <prior> <prior> <prior> <prior> <prior> <prior>
<prior> <prior> C-z C-z C-z C-z C-z C-z C-z C-z C-z
C-z C-z C-z C-z <switch-frame> <switch-frame> <help-echo>
<help-echo> <help-echo> <help-echo> <help-echo> <switch-frame>
M-x r e p C-g <help-echo> <switch-frame> <switch-frame>
<help-echo> <help-echo> <help-echo> <switch-frame>
<switch-frame> <help-echo> <switch-frame> <help-echo>
M-x r e p o r t - e m <tab> <return>
Recent messages:
Saving file d:/gnu/bzr/emacs/trunk/src/xdisp.c...
Wrote d:/gnu/bzr/emacs/trunk/src/xdisp.c
Undo!
Saving file d:/gnu/bzr/emacs/trunk/src/xdisp.c...
Wrote d:/gnu/bzr/emacs/trunk/src/xdisp.c
Undo!
Saving file d:/gnu/bzr/emacs/trunk/src/xdisp.c...
Wrote d:/gnu/bzr/emacs/trunk/src/xdisp.c
Mark set [4 times]
Mark saved where search started
Quit
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None found.
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rng-valid rng-loc rng-uri rng-parse nxml-parse rng-match rng-dt
rng-util rng-pttrn nxml-ns nxml-mode nxml-outln nxml-rap nxml-util
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pcomplete comint ring org-list org-faces org-compat org-entities
org-macs cal-menu calendar cal-loaddefs jka-compr vc-cvs flyspell
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mailabbrev gmm-utils mailheader mail-parse rfc2231 rmail rfc2047
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