view nt/PROBLEMS @ 788:026c5bf9c134

[xemacs-hg @ 2002-03-21 07:29:57 by ben] chartab.c: Fix bugs in implementation and doc strings. config.h.in: Add foo_checking_assert_at_line() macros. Not clear whether these are actually useful, though; I'll take them out if not. symsinit.h, emacs.c: Some improvements to the timeline. Rearrange a bit the init calls. Add call for reinit_vars_of_object_mswindows() and declare in symsinit.h. event-Xt.c, event-gtk.c, event-msw.c, event-stream.c, event-tty.c, events.c, events.h: Introduce new event methods for printing, comparing, and hashing magic events, to avoid event-type-specific stuff that had crept into events.c. (And was crashing, since the channel in MS Windows magic events may be nil.) Implement the methods in event-{tty,gtk,Xt,mswindows}.c. Make wrapping functions event_stream_{compare,hash,format}_magic_event() to check if everything's OK and call the actual callback. Fix events.c to use the new methods. Add a new event-stream-operation EVENT_STREAM_NOTHING -- event stream not actually required to be able to do anything, just be open. (#### This event-stream-operation stuff needs to be rethought.) Fixed describe_event() in event-Xt.c to print its output to a stream, not always to stderr, so it can be used elsewhere. (e.g. in print-event when a magic event is encountered?) lisp.h, lrecord.h: Define new assert_at_line(), for use in asserts inside of inline functions. The assert will report the line and file of the inline function, which is almost certainly not what you want as it's useless. what you want to see is where the pseudo-macro was called from. So, when error-checking is on, we pass in the line and file into the macros, for accurate printout using assert_at_line(). Happens only when error-checking is defined so doesn't slow down non-error-checking builds. Fix XCHAR, XINT, XCHAR_OR_INT, XFOO, and wrap_foo() in this fashion. lstream.c, lstream.h: Add resizing_buffer_to_lisp_string(). objects-gtk.c: Fix typo. objects-msw.c: Implement a smarter way of determining whether a font matches a charset. Formerly we just looked at the "script" element of the font spec, converted it to a code page, and compared it with the code page derived from the charset. Now, as well as doing this, we ask the font for the list of unicode ranges it supports, see what range the charset falls into (#### bogus! need to do this char-by-char), and see if any of the font's supported ranges include the charset's range. also do some caching in Vfont_signature_data of previous inquiries. charset.h, text.c, mule-charset.c: New fun; extracted out of Fmake_char() and declare prototype in charset.h. text.h: introduce assert_by_line() to make REP_BYTES_BY_FIRST_BYTE report the file and line more accurately in an assertion failure. unicode.c: make non-static (used in objects-msw.c), declare in charset.h. mule\mule-category.el: Start implementing a category API compatible with FSF. Not there yet. We need improvements to char-tables. mule\mule-charset.el: Copy translation table code from FSF 21.1 and fix up. Eventually we'll have them in XEmacs. (used in ccl) Not here quite yet, and we need some improvements to char-tables. mule\cyril-util.el, mule\cyrillic.el, mule\devan-util.el, mule\ethio-util.el, mule\korea-util.el, mule\mule-tty-init.el, mule\tibet-util.el, mule\viet-util.el, mule\vietnamese.el: Fix numerous compilation warnings. Fix up code related to translation tables and other types of char-tables. menubar-items.el: Move the frame commands from the View menu to the File menu, to be consistent with how most other programs do things. Move less-used revert/recover items to a submenu. Make "recover" not prompt for a file, but recover the current buffer. TODO.ben-mule-21-5: Create bug list for latest problems.
author ben
date Thu, 21 Mar 2002 07:31:30 +0000
parents abe6d1db359e
children
line wrap: on
line source

                                                  -*- mode:outline -*-

This file describes various problems that have been encountered in
running XEmacs on Windows 95, 98 and NT. It has been updated for
XEmacs 21.0.

This is the first release of XEmacs on Windows. In testing it has
proved to be extremely stable in general use (but see the gnus and
subprocess problems below), but not all features or packages work
correctly yet.

Use `C-c C-f' to move to the next equal level of outline, and
`C-c C-b' to move to previous equal level.  `C-h m' will give more
info about the Outline mode.

Also, Try finding the things you need using one of the search commands
XEmacs provides (e.g. `C-s').

General advice:
    Remember your .emacs file! ~\.emacs is your Emacs init file.  If
    you observe strange problems, invoke XEmacs with the `-q' option
    and see if you can repeat the problem.


* Problems with running XEmacs
==============================
** Conflicts with FSF NTEmacs

Depending on how it is installed, FSF NTEmacs may setup various EMACS*
variables in your environment. The presence of these variables may
cause XEmacs to fail at startup, cause you to see corrupted
doc-strings, or cause other random problems.

You should remove these variables from your environment. These
variables are not required to run FSF NTEmacs if you start it by
running emacs.bat.

** XEmacs can't find my .emacs file

XEmacs looks for your .emacs in your "home" directory. XEmacs decides
that your "home" directory is, in order of preference:
	
- The value of the HOME environment variable, if the variable exists.
- The value of the HOMEDRIVE and HOMEPATH environment variables, if
  these variables both exist.
- The directory that XEmacs was started from.

** XEmacs can't find any packages

XEmacs looks for your packages in subdirectories of a directory which
is set at compile-time, and defaults to C:\Program Files\XEmacs. The
variable configure-package-path holds the actual path that was
compiled into your copy of XEmacs.

The compile-time default location can be overridden by the
EMACSPACKAGEPATH environment variable or by the
SOFTWARE\GNU\XEmacs\EMACSPACKAGEPATH registry entry. You should check
that these variables, if they exist, point to the actual location of
your package tree.

** XEmacs sometimes crashes when using gnus

This is a known bug in this release of XEmacs on Windows.

If you want to use gnus anyway, you should minimize any possible data
loss by saving any modified buffers before you start and ensuring that
you haven't set gnus-use-dribble-file to nil or disabled the normal
XEmacs auto-save mechanism.

** XEmacs doesn't die when shutting down Windows 95 or 98

When shutting down Windows 95 or 98 you may see a dialog that says
  "xemacs / You must quit this program before you quit Windows".
It is safe to
  "Click OK to quit the program and Windows",
but you won't be offered a chance to save any modified XEmacs buffers.

* Look and feel
===============
** Key bindings

The C-z, C-x, C-c, and C-v keystrokes have traditional uses in both
emacs and Windows programs. XEmacs binds these keys to their
traditional emacs uses, and provides Windows 3.x style bindings for
the Cut, Copy and Paste functions.

	Function	XEmacs binding
	--------	--------------
	Undo		C-_
	Cut		Sh-Del
 	Copy		C-Insert
	Paste		Sh-Insert

You can rebind keys to make XEmacs more Windows-compatible; for
example, to bind C-z to undo:

       (global-set-key [(control z)] 'undo)

Rebindind C-x and C-c is trickier because by default these are prefix
keys in XEmacs. See the "Key Bindings" node in the XEmacs manual.

** Behavior of selected regions

Selected regions behave differently in XEmacs from typical Windows
programs. The pc-select package provides various functions to enable
the standard Windows behavior for selected regions (eg mark via
shift-arrow, self-inserting deletes region, etc).

** Limitations on the use of the AltGr key.

In some locale and OS combinations you can't generate M-AltGr-key or
C-M-AltGr-key sequences at all.

To generate C-AltGr-key or C-M-AltGr-key sequences you must use the
right-hand Control key and you must press it *after* AltGr.

These limitations arise from fundamental problems in the way that the
win32 API reports AltGr key events. There isn't anything that XEmacs
can do to work round these problems that it isn't already doing.

You may want to create alternative bindings if any of the standard
XEmacs bindings require you to use some combination of Control or Meta
and AltGr.


* Features not fully supported in this release
==============================================
** Limited support for subprocesses

Attempting to use call-process to run a 16bit program gives a
"Spawning child process: Exec format error". For example shell-command
fails under Windows 95 and 98 if you use command.com or any other
16bit program as your shell.

XEmacs may incorrectly quote your call-process command if it contains
double quotes, backslashes or spaces.

start-process and functions that rely on it are supported under Windows 95,
98 and NT. However, starting a 16bit program that requires keyboard input
may cause XEmacs to hang or crash under Windows 95 and 98, and will leave
the orphaned 16bit program consuming all available CPU time.

Sending signals to subprocesses started by call-process or by
start-process fails with a "Cannot send signal to process" error under
Windows 95 and 98. As a side effect of this, quitting XEmacs while it
is still running subprocesses causes it to crash under Windows 95 and
98.

** Changing fonts from the Options menu

The "Font" and "Size" entries on the Options menu don't work yet. This
will be fixed in a future release. In the meantime, you can either
change face fonts with customize or manually; for example:

    (set-face-font 'default "Lucida Console:Regular:10::Western")
    (set-face-font 'modeline "MS Sans Serif:Regular:10::Western")

Font weight and style and character set must be supplied in English as
above. Common weights and styles are "Regular", "Regular Italic",
"Bold" and "Bold Italic". Common character sets are "Western",
"Central European" and "OEM/DOS".

Windows 95 only comes with one fixed-width font that is suitable for
use by XEmacs, namely "Courier New".

** No MULE support

This release of XEmacs on Windows does not contain MULE support. MULE
support has not been a priority for the XEmacs on Windows developers.

** Printing

This release of XEmacs on Windows does not support printing natively.

You can use the lpr-command and lpr-switches variables to specify an
external print program.