which breaks relative file names that reference the parent directory.
The solution is to make sure the preprocessor is run with the
-`-traditional' option. (The `configure' script should do that
-automatically with Emacs 21 and later.)
-
-Versions of the GNU preprocessor after Feb 1 2001 reportedly don't
-have this problem, so upgrading should solve this.
+`-traditional' option. (The `configure' script does that
+automatically.)
Note that this problem does not pertain to the MS-Windows port of
Emacs, since it doesn't use the preprocessor to generate Makefile's.
which can be used to unpack `.tar.gz' and `.zip' archives without
mangling them.
+* JPEG images aren't displayed.
+
+This has been reported when Emacs is built with jpeg-6a library.
+Upgrading to jpeg-6b solves the problem.
+
* Building `ctags' for MS-Windows with the MinGW port of GCC fails.
This might happen due to a bug in the MinGW header assert.h, which
#else /* debugging enabled */
-* `put-image' and `insert-image' don't work with JPEG images
-
-This can happen if Emacs is built with jpeg-6a library. Upgrading to
-jpeg-6b reportedly solves the problem.
-
* When using Xaw3d scroll bars without arrows, the very first mouse
click in a scroll bar might be ignored by the scroll bar widget. This
is probably a bug in Xaw3d; when Xaw3d is compiled with arrows, the
* Colors are not available on a tty or in xterm.
-Emacs 21 supports colors on character terminals and in xterm (when
-Emacs is invoked with the `-nw' option), but this support on Unix and
-GNU/Linux systems relies on the termcap entry to specify that the
-display supports color. Emacs looks at the "Co" capability for the
-terminal to find out how many colors are supported; it should be
-non-zero to activate the color support within Emacs. (Most color
-terminals support 8 or 16 colors.)
+Emacs 21 supports colors on character terminals and terminal
+emulators, but this support relies on the terminfo or termcap database
+entry to specify that the display supports color. Emacs looks at the
+"Co" capability for the terminal to find out how many colors are
+supported; it should be non-zero to activate the color support within
+Emacs. (Most color terminals support 8 or 16 colors.)
-Emacs uses the termcap entry for the terminal whose name is the value
-of the environment variable TERM. On an xterm, a common terminal
+Emacs uses the database entry for the terminal whose name is the value
+of the environment variable TERM. With `xterm', a common terminal
entry that supports color is `xterm-color', so setting TERM's value to
-`xterm-color' might activate the color support.
+`xterm-color' might activate the color support on an xterm-compatible
+emulator.
-When Emacs runs on MS-DOS or MS-Windows systems, it always supports
-colors, so the above is only relevant for Unix and GNU/Linux systems.
-
-Some editing modes do not use colors unless you turn on the Font-lock
-mode. Some people have long ago set their `~/.emacs' files to turn
-on Font-lock on X only, so they won't see colors on a tty. One easy
-way of turning on Font-lock is by typing "M-x global-font-lock-mode RET".
+Some modes do not use colors unless you turn on the Font-lock mode.
+Some people have long ago set their `~/.emacs' files to turn on
+Font-lock on X only, so they won't see colors on a tty. The
+recommended way of turning on Font-lock is by typing "M-x
+global-font-lock-mode RET" or by customizing`global-font-lock-mode'.
* Problems in Emacs built with LessTif.
The problems seem to depend on the version of LessTif and the Motif
emulation for which it is set up.
-To the best of our knowledge, only the Motif 1.2 emulation seemed to
-be stable enough in LessTif. Lesstif 0.92-17's Motif 1.2 emulation
-seems to work okay on FreeBSD. On GNU/Linux systems, lesstif-0.92.6
-configured with "./configure --enable-build-12 --enable-default-12" is
-reported to be the most successful. By contrast,
-lesstif-0.92.0-1.i386.rpm was reported to have problems with menu
-placement, and should probably be avoided.
+Only the Motif 1.2 emulation seems to be stable enough in LessTif.
+Lesstif 0.92-17's Motif 1.2 emulation seems to work okay on FreeBSD.
+On GNU/Linux systems, lesstif-0.92.6 configured with "./configure
+--enable-build-12 --enable-default-12" is reported to be the most
+successful. The binary GNU/Linux package
+lesstif-devel-0.92.0-1.i386.rpm was reported to have problems with
+menu placement.
On some systems, even with Motif 1.2 emulation, Emacs occasionally
-locks up, grabbing all mouse and keyboard events. The mouse still
-moves, but will not go outside of the Emacs window (so you can't get
-it over the frame title barm, for instance). None of the menus are
-responsive. In addition, the keyboard will not respond. Keypresses
-are totally ignored, including Ctrl-Alt-F1 to Ctrl-Alt-F6. This means
-you can not even get to the virtual console.
-
-We still don't know what causes these problems; they are not
-reproducible on some systems, notably those used by Emacs developers.
+locks up, grabbing all mouse and keyboard events. We still don't know
+what causes these problems; they are not reproducible by Emacs
+developers.
* Known problems with the MS-Windows port of Emacs 21.1.
where this is known to happen is Compaq OSF/1 (`Tru64'), but it
probably isn't limited to that system.
-It is possible to build Emacs linked statically, but that makes the
-binary much larger.
+You can configure the jpeg library with the `--enable-shared' option
+and then rebuild libjpeg. This produces a shared version of libjpeg,
+which you need to install. Finally, rerun the Emacs configure script,
+which should now find the jpeg library. Alternatively, modify the
+generated src/Makefile to link the .a file explicitly.
-If you want to avoid building a statically linked Emacs, configure the
-jpeg library with the `--enable-shared' option and then rebuild
-libjpeg. This produces a shared version of libjpeg, which you need to
-install. Finally, rerun the Emacs configure script, which should now
-find the jpeg library.
-
-(If you need the static version of the jpeg library as well, you can
-configure libjpeg with both `--enable-static' and `--enable-shared'
-options.
+(If you need the static version of the jpeg library as well, configure
+libjpeg with both `--enable-static' and `--enable-shared' options.)
* Building Emacs over NFS fails with ``Text file busy''.
one particular case, waiting for 10 or more seconds seemed to work
around the problem.
-* Some accented ISO-8859-1 characters or umlauts are displayed as | or _.
+* Accented ISO-8859-1 characters are displayed as | or _.
Try other font set sizes (S-mouse-1). If the problem persists with
other sizes as well, your text is corrupted, probably through software
* The `oc-unicode' package doesn't work with Emacs 21.
-It seems that `oc-unicode' introduces 5 2-dimensional charsets to
-cover the BMP (Basic Multilingual Plane) subset of Unicode. However,
-Emacs 21 adds three mule-unicode-xxxx-yyyy charsets and one
-japanese-jisx0213-2 in the private charset area of the Mule character
-representation. This leaves only one free slot left for additional
-dimension-2 charsets, which is not enough for `oc-unicode'.
-
-The solution is to modify `oc-unicode' to use the Emacs mule-unicode-*
-charsets. We don't yet have a patch for that.
+This package tries to define more private charsets than there are free
+slots now. If the built-in Unicode/UTF-8 support is insufficient,
+e.g. if you need more CJK coverage, use the current Mule-UCS package.
+Any files encoded as emacs-mule using oc-unicode won't be read
+correctly by Emacs 21.
* On systems with shared libraries you might encounter run-time errors
from the dynamic linker telling you that it is unable to find some
projects / emacs.git / commitdiff