Reported by: mwd <at> md5i.com
Date: Thu, 25 Feb 2010 16:18:02 UTC
Severity: serious
Done: Chong Yidong <cyd <at> stupidchicken.com>
Bug is archived. No further changes may be made.
Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):
From: Michael Welsh Duggan <mwd <at> cert.org> To: bug-gnu-emacs <at> gnu.org Subject: 23.1.92; Indentation problems in C mode Date: Thu, 25 Feb 2010 11:11:37 -0500
[Message part 1 (text/plain, inline)]
I'm getting some screwy indentation behavior from C mode. From a
current bzr checkout/install of emacs, try the following recipe:
emacs -Q foo.c | starts emacs on foo.c (included below)
C-u 7 C-n | move down 7 lines
TAB | indent, nothing changes (good)
C-p C-p | move up 2 lines
TAB C-n TAB C-n | indent 2 lines, nothing changes (good)
TAB | line unindents by 2 (bad)
TAB | line re-indents (good, but strange)
TAB | no change this time
And here's another recipe for weirdness:
emacs -Q foo.c | starts emacs on foo.c (included below)
C-x h | select buffer
C-M-\ | indent region everything from line 7
| down to the while (0) unindents 2
C-u 5 C-n | move down to the do {
C-x ( TAB C-n C-x ) | define a macro to indent and move down
| a line
C-x e e e e e e | Indent each line, no change
Here's foo.c
[foo.c (text/plain, inline)]
#if !SK_ENABLE_IPV6
# define skipaddrApplyCIDR(ipaddr, cidr) \
ipUnionApplyCIDRV4(&(ipaddr)->ip_ip, cidr)
#else
# define skipaddrApplyCIDR(ipaddr, cidr) \
do { \
if (skipaddrIsV6(ipaddr)) { \
ipUnionApplyCIDRV6(&((ipaddr)->ip_ip), cidr); \
} else { \
ipUnionApplyCIDRV4(&((ipaddr)->ip_ip), cidr); \
} \
} while (0)
#endif
[Message part 3 (text/plain, inline)]
In GNU Emacs 23.1.92.2 (i686-pc-linux-gnu, GTK+ Version 2.10.4) of 2010-02-19 on maru.green.cert.org Windowing system distributor `The X.Org Foundation', version 11.0.70101000 configured using `configure '--prefix=/home/mwd' '--without-toolkit-scroll-bars' '--with-gif=no'' 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: en_US.UTF-8 value of $XMODIFIERS: @im=none locale-coding-system: utf-8-unix default enable-multibyte-characters: t Major mode: Group Minor modes in effect: gnus-undo-mode: t shell-dirtrack-mode: t display-time-mode: t diff-auto-refine-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 auto-encryption-mode: t auto-compression-mode: t line-number-mode: t Recent input: <return> C-x h C-M-\ C-n C-n C-n C-n C-n C-n C-n C-n C-p <tab> C-o C-_ C-p <tab> C-n C-n C-n C-n C-b C-b } <tab> SPC <tab> C-p C-p C-p C-p C-p C-a C-p C-x h C-M-\ C-n C-n C-n C-n C-n C-n C-n <tab> C-n <tab> C-n <tab> C-n <tab> C-b C-b C-b C-b C-b C-b C-b C-b C-b C-b C-b \ <return> <tab> C-p C-x h C-M-\ C-n C-n C-n C-n C-n C-n C-n C-n C-p <tab> C-n <tab> C-n <tab> C-n <tab> C-n <tab> C-p C-p C-p C-p C-p <tab> C-p <tab> C-p <tab> C-p C-p C-p <tab> C-n C-a <tab> C-p C-a C-x h C-M-\ C-_ <switch-frame> M-x r e p o r e t - e m <tab> <backspace> <backspace> <backspace> <backspace> <backspace> <backspace> r t - e m <tab> <return> I n d e n t a t i o n SPC p r o b l e m s SPC i n SPC c c - m o d e <return> M-x c c - <tab> <tab> b <tab> <backspace> <backspace> <backspace> - <tab> b <tab> <backspace> r <tab> e <tab> <backspace> <backspace> s u <tab> <return> y M-p C-e <M-backspace> <M-backspace> C SPC m o d e <return> C-x o C-x k y e s <return> C-x 0 M-v M-v C-n C-p C-n C-n C-n C-n C-n C-n C-n C-n C-n C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-p C-_ C-x k M-x r e p o r t - e m <tab> <return> Recent messages: Checking 39 files in /home/mwd/share/emacs/23.1.92/lisp/obsolete... Checking 1 files in /home/mwd/share/emacs/23.1.92/leim... Checking for load-path shadows...done Making completion list... [4 times] Do you want to submit a report on CC Mode? (y or n) Formatting bug report buffer....... Please enter your report. Type C-c C-c to send, C-c C-k to abort. call-interactively: Beginning of buffer Auto-saving...done Undo! Load-path shadows: /afs/cert.org/usr/mwd/src/elisp/nnir hides /home/mwd/share/emacs/23.1.92/lisp/gnus/nnir Features: (reporter shadow emacsbug time-stamp tabify whitespace dabbrev vc-dispatcher vc-svn flyspell ispell cc-mode cc-fonts cc-menus cc-cmds cc-styles cc-align cc-engine cc-vars cc-defs help-mode view copyright gnus-dup mule-util gnus-cite ansi-color mail-extr gnus-async gnus-bcklg parse-time timezone sort gnus-ml disp-table byte-opt bytecomp byte-compile nnml utf-7 utf7 nndraft nnmh tls nnimap imap gnus-agent gnus-srvr gnus-score score-mode nnvirtual gnus-msg gnus-art mm-uu mml2015 epg-config mm-view gnus-cache nnir edmacro kmacro gnus-sum gnus-demon nntp gnus-group gnus-undo nnmail mail-source nnoo gnus-start gnus-spec gnus-int gnus-range gnus-win uniquify tramp-imap assoc tramp-gw tramp-fish tramp-smb tramp-cache tramp-ftp tramp-cmds tramp auth-source advice help-fns advice-preload shell format-spec tramp-compat trampver time smime dig server psvn cl cl-19 log-edit pcvs-util add-log diff-mode easy-mmode pgg pgg-parse pgg-def message sendmail ecomplete rfc822 mml easymenu mml-sec password-cache mm-decode mm-bodies mm-encode mailcap mail-parse rfc2231 rfc2047 rfc2045 qp ietf-drums mailabbrev gmm-utils mailheader canlock sha1 hex-util hashcash gnus gnus-ems nnheader gnus-util netrc time-date mail-utils mm-util mail-prsvr wid-edit generic-x dired-x dired-aux dired ange-ftp regexp-opt comint ring tooltip ediff-hook vc-hooks lisp-float-type mwheel x-win x-dnd font-setting tool-bar dnd fontset image fringe lisp-mode register page menu-bar rfn-eshadow timer select scroll-bar mldrag mouse jit-lock font-lock syntax facemenu font-core frame cham georgian utf-8-lang misc-lang vietnamese tibetan thai tai-viet lao korean japanese hebrew greek romanian slovak czech european ethiopic indian cyrillic chinese case-table epa-hook jka-cmpr-hook help simple abbrev loaddefs button minibuffer faces cus-face files text-properties overlay md5 base64 format env code-pages mule custom widget hashtable-print-readable backquote make-network-process dbusbind system-font-setting font-render-setting gtk x-toolkit x multi-tty emacs) -- Michael Welsh Duggan (mwd <at> cert.org)
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