match-string returns non-nil if no match
21 years, 3 months
Burckhardt, Jacob P.
Burckhardt, Jacob P.
Dear Bug Team!
When I put the cursor at the end of this lisp code and run M-x
eval-last-sexp, it says, "b".
(progn
(string-match "\\(a\\)" "a")
(string-match "\\(a\\)" "b")
(match-string 1 "b"))
The info documentation for match-string says, "This function returns,
as a string, the text matched in the last search or match operation.
...if that subexpression didn't match anything, the value is `nil'"
The quote says it looks at the *last* operation. The last operation
in the above lisp code is the last call to string-match. That
particular call didn't match anything. The quote above says that in
that case, the value is nil. Therefore I think that match-string
should return nil, and since progn returns whatever the last
expression returns, then I think the overall return value of the
entire lisp code above should be nil. But instead it returns "b".
================================================================
System Info to help track down your bug:
---------------------------------------
uname -a: Linux reliant.ca.metsci.com 2.2.9 #2 SMP Mon May 17 11:53:40 PDT 1999 i686 unknown
./configure '--prefix=/reliant/bjacob/xemacs'
XEmacs 21.1.12 "Channel Islands" configured for `i686-pc-linux'.
Where should the build process find the source code? /reliant/bjacob/xemacs-21.1.12
What installation prefix should install use? /reliant/bjacob/xemacs
What operating system and machine description files should XEmacs use?
`s/linux.h' and `m/intel386.h'
What compiler should XEmacs be built with? gcc -g -O3 -Wall -Wno-switch
Should XEmacs use the GNU version of malloc? yes
(Using Doug Lea's new malloc from the GNU C Library.)
Should XEmacs use the relocating allocator for buffers? yes
What window system should XEmacs use? x11
Where do we find X Windows header files? /usr/X11R6/include
Where do we find X Windows libraries? /usr/X11R6/lib
Compiling in support for XAUTH.
Compiling in support for XPM images.
Compiling in support for PNG image handling.
Compiling in support for (builtin) GIF image handling.
Compiling in support for JPEG image handling.
Compiling in support for TIFF image handling.
Compiling in support for X-Face message headers.
Compiling in native sound support.
Compiling in support for Berkeley DB.
Compiling in support for ncurses.
Compiling in support for GPM (General Purpose Mouse).
Compiling in support for proper session-management.
Using Lucid menubars.
Using Lucid scrollbars.
Using Athena dialog boxes.
Compiling in DLL support.
movemail will use "dot-locking" for locking mail spool files.
Using Lisp_Objects with minimal tagbits.
Load-Path Lisp Shadows:
----------------------
(/disk/tmp/bjacob/xemacs/lib/xemacs/xemacs-packages/lisp/vc/vc
/disk/tmp/bjacob/xemacs/lib/xemacs/xemacs-packages/lisp/vc-cc/vc
/disk/tmp/bjacob/xemacs/lib/xemacs/xemacs-packages/lisp/vc/vc-hooks
/disk/tmp/bjacob/xemacs/lib/xemacs/xemacs-packages/lisp/vc-cc/vc-hooks
/disk/tmp/bjacob/xemacs/lib/xemacs/xemacs-packages/lisp/xemacs-base/xpm-button
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-------------------------
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Features:
--------
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hm--html-menus-autoloads gnus-autoloads gnats-autoloads
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forms-autoloads footnote-autoloads eudc-autoloads eterm-autoloads
emerge-autoloads elib-autoloads eicq-autoloads efs-autoloads
edt-autoloads edit-utils-autoloads ediff-autoloads edebug-autoloads
dired-autoloads debug-autoloads crisp-autoloads cookie-autoloads
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c-support-autoloads bbdb-autoloads auctex-autoloads apel-autoloads
ada-autoloads Sun-autoloads Standard-autoloads loadhist auto-show
fontl-hooks x-iso8859-1 menubar-items x-menubar mouse mode-motion
itimer auto-save lisp-mode easymenu iso8859-1 page buff-menu
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network-streams subprocesses menubar berkeley-db md5 xemacs tiff png
gif jpeg xpm lisp-float-type linux dialog devices window-system
c-balloon-help)
Recent keystrokes:
-----------------
s TAB t - p TAB a TAB RET C-s n e t left M-< C-s c
c right C-\ v c c TAB TAB TAB RET q C-x C-f BS BS BS
BS BS BS BS BS BS BS BS BS BS BS BS BS BS BS BS BS
BS BS BS BS BS BS BS BS BS BS BS BS BS BS BS BS BS
BS BS BS BS BS BS BS BS BS BS BS BS BS BS BS ~ / t
. C RET C-\ l C-x 0 C-\ v c c TAB TAB C-g misc-use
r
Recent messages (most recent first):
-----------------------------------
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Quit
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nil
jb
Wrote /sumatra/bjacob/backup/work_home_common_files_cvs_module/.emacs
3
jb
Wrote /sumatra/bjacob/backup/work_home_common_files_cvs_module/.emacs
1
- 2 participants
- 5 comments
Several points of interest WRT AUC TeX and preview-latex
21 years, 3 months
David Kastrup
David Kastrup
Hello,
as you probably have noticed, AUC TeX's maintainer has changed and
the development site has moved to
<URL:http://savannah.nongnu.org/projects/auctex>. The currently
released stable version is 11.13, the current beta version is 11.14
(which contains another important fix for multi-directory projects).
In the archives for this list, I have dug up a reference to an
interaction problem of preview-latex with other XEmacs packages such
as Gnus. This bug has been fixed starting with preview-latex 0.7.5.
The current release of preview-latex is 0.7.7.
It is a shame that XEmacs still ships with the appallingly outdated
AUC TeX 10.0g: a lot of TeX packages have gained support in the mean
time, and a lot of bugs have been fixed.
We get frequent complaints from AUC TeX users both on the auc-tex and
the preview-latex related discussion lists.
Additionally, it would be nice if preview-latex was also offered as
part of the normal package repositories. It is already organized as an
XEmacs package except for additional TeX styles. Those could
probably be put into their own subdirectory, and that could be added
with
(setenv "TEXINPUTS" (concat "~/package-directory/preview-tex-files:"
(getenv "TEXINPUTS)))
into TeX's usual search path in case the user does not want to add
those files generally into his local TeX styles.
--
David Kastrup, Kriemhildstr. 15, 44793 Bochum
- 4 participants
- 10 comments
set-frame-position mishandles negative args
21 years, 3 months
Peter Brown
Peter Brown
This bug report will be sent to the XEmacs Development Team,
not to your local site managers!!
Please write in English, because the XEmacs maintainers do not have
translators to read other languages for them.
Please describe as succinctly as possible:
- What happened.
- What you thought should have happened.
- Precisely what you were doing at the time.
Please also include any C or lisp back-traces that you may have.
================================================================
Dear Bug Team!
The docs for set-frame-position (i.e., C-h f set-frame-position) say
that negative args are interpreted as counting from the right or
bottom, respectively. In fact, the args appear to be interpreted as
counting from the upper-left corner of the screen, regardless of sign.
What I did:
1. Invoked xemacs with -vanilla.
2. Using the mouse, dragged the frame to the middle of the screen.
3. In the *scratch* buffer, typed and evaluated:
(set-frame-position (selected-frame) -1 0)
The frame jumped to the upper-left corner of the screen. (It should
have jumped to the upper right, because of the negative XOFFSET.)
Further experimentation, with larger negative args, shows that I can
indeed make the frame jump partly off the screen, and that YOFFSET has
the same problem as XOFFSET.
OS: Windows ME
window-system: mswindows
Let me know if I can be of further help.
Peace,
--Peter
================================================================
System Info to help track down your bug:
---------------------------------------
uname -a: CYGWIN_NT-5.0 TSUNAMI 1.3.12(0.54/3/2) 2002-07-06 02:16 i686 unknown
./configure '--with-dragndrop' '--with-postgresql=no' '--with-x=no' '--bindir=/usr/local/bin/i686-pc-cygwin' '--with-site-lisp=yes' '--with-ipv6-cname=no' '--with-netinstall'
XEmacs 21.4.10 "Military Intelligence (Windows)" configured for `i686-pc-cygwin'.
Compilation / Installation:
Source code location: /development/xemacs/xemacs-21.4-release
Installation prefix: /usr/local
Operating system description file: `s/cygwin32.h'
Machine description file: `m/intel386.h'
Compiler: gcc -I/usr/lib/../include/noX -I/usr/lib/../include/noX -g -O3 -Wall -Wno-switch -Winline -Wmissing-prototypes -Wsign-compare -Wshadow -Wpointer-arith
Relocating allocator for buffers: no
GNU version of malloc: yes
Window System:
Compiling in support for the Microsoft window system.
Using MS-Windows menubars.
Using MS-Windows scrollbars.
Using MS-Windows dialog boxes.
Using MS-Windows native widgets.
Compiling in support for Drag'n'Drop (EXPERIMENTAL).
- Drag'n'Drop prototype: msw.
TTY:
Compiling in support for ncurses.
Images:
Compiling in support for GIF images (builtin).
Compiling in support for XPM images.
Compiling in support for PNG images.
Compiling in support for JPEG images.
Compiling in support for TIFF images.
Compiling in support for X-Face message headers.
Sound:
Compiling in support for sound (native).
Databases:
Compiling in support for GNU DBM.
Internationalization:
Compiling in support for file coding.
Mail:
Compiling in support for POP mail retrieval.
Other Features:
Inhibiting IPv6 canonicalization at startup.
Compiling in support for dynamic shared object modules.
Load-Path Lisp Shadows:
----------------------
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-------------------------
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--------
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xemacs-base-autoloads w3-autoloads vm-autoloads viper-autoloads
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mswindows-scrollbars mswindows tty-frames tty toolbar native-sound
scrollbar unix-processes multicast network-streams subprocesses
modules menu-accelerator-support menubar dbm md5 xemacs gutter tiff
png gif jpeg xface xpm xbm lisp-float-type cygwin32 dragdrop-api
dialog devices window-system base64)
Recent keystrokes:
-----------------
( s e t - f r a m e - p o s i t i o n SPC ( s e l e
c t e d - f r a m e ) SPC - 1 SPC - 1 BS BS 0 ) C-j
M-x r e p o r t - x e m TAB RET
Recent messages (most recent first):
-----------------------------------
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