Revert last commit.

[gnu-emacs] / INSTALL

diff --git a/INSTALL b/INSTALL
index 0c69b522785cf75b5493c9ef205a532a1d2e2c04..3aed5a869cca61c1587ab003c5cbf01d74312067 100644 (file)
--- a/INSTALL
+++ b/INSTALL
@@ -111,15 +111,16 @@ ADDITIONAL DISTRIBUTION FILES
 
 * Complex Text Layout support libraries
 
-Emacs needs the optional libraries "m17n-db", "libm17n-flt", "libotf"
-to correctly display such complex scripts as Indic and Khmer.
-On some systems, particularly GNU/Linux, these libraries may be
-already present or available as additional packages.  Note that if
-there is a separate `dev' or `devel' package, for use at compilation
-time rather than run time, you will need that as well as the
-corresponding run time package; typically the dev package will contain
-header files and a library archive.  Otherwise, you can download and
-build libraries from sources.
+On GNU and Unix systems, Emacs needs the optional libraries "m17n-db",
+"libm17n-flt", "libotf" to correctly display such complex scripts as
+Indic and Khmer, and also for scripts that require Arabic shaping
+support (Arabic and Farsi).  On some systems, particularly GNU/Linux,
+these libraries may be already present or available as additional
+packages.  Note that if there is a separate `dev' or `devel' package,
+for use at compilation time rather than run time, you will need that
+as well as the corresponding run time package; typically the dev
+package will contain header files and a library archive.  Otherwise,
+you can download and build libraries from sources.
 
 The sources of these libraries are available by anonymous CVS from
 cvs.m17n.org.
@@ -133,6 +134,9 @@ For m17n-lib, if you have problems with making the whole package
 because you lack some other packages on which m17n-lib depends, try to
 configure it with the option "--without-gui".
 
+Note that Emacs cannot support complex scripts on a TTY, unless the
+terminal includes such a support.
+
 * intlfonts-VERSION.tar.gz
 
 The intlfonts distribution contains X11 fonts in various encodings
@@ -309,6 +313,10 @@ systems which support that.
 
 Use --without-sound to disable sound support.
 
+Use --with-wide-int to implement Emacs values with the type 'long long',
+even on hosts where a narrower type would do.  With this option, on a
+typical 32-bit host, Emacs integers have 62 bits instead of 30.
+
 The `--prefix=PREFIXDIR' option specifies where the installation process
 should put emacs and its data files.  This defaults to `/usr/local'.
 - Emacs (and the other utilities users run) go in PREFIXDIR/bin