doc/emacs/anti.texi

   1 @c This is part of the Emacs manual.
   2 @c Copyright (C) 2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
   3 @c See file emacs.texi for copying conditions.
   4
   5 @node Antinews, Mac OS / GNUstep, X Resources, Top
   6 @appendix Emacs 22 Antinews
   7 @c Update the emacs.texi Antinews menu entry with the above version number.
   8
   9   For those users who live backwards in time, here is information
  10 about downgrading to Emacs version 22.3.  We hope you will enjoy the
  11 greater simplicity that results from the absence of many Emacs
  12 @value{EMACSVER} features.
  13
  14 @itemize @bullet
  15
  16 @item
  17 The Fontconfig font library is no longer supported.  To specify a
  18 font, you must use an XLFD (X Logical Font Descriptor).  The other
  19 ways of specifying fonts---so-called ``Fontconfig'' and ``GTK'' font
  20 names---are clearly redundant, and have been removed.
  21
  22 @item
  23 We have switched to a character representation specially designed for
  24 Emacs.  Rather than forcing all the widely used scripts artificially
  25 into alignment, as Unicode does, Emacs treats them all equally, giving
  26 each one a place in the space of character codes.  Thus, scripts do
  27 not need to fight over characters used in each one of them, as each
  28 has its own variant, and they all are different as far as Emacs is
  29 concerned.  For example, there's a Latin-1 c-cedilla character, and
  30 there's a Latin-2 c-cedilla; searching a buffer for the Latin-1
  31 variant will only find that variant, but not the others.  This design
  32 allows us to eliminate the confusing practice in Emacs 23 whereby one
  33 character can simultaneously belong to any number of charsets.
  34
  35 @item
  36 Emacs now uses its own special internal encoding for non-@acronym{ASCII}
  37 characters, known as @samp{emacs-mule}.  This was imperative to
  38 support several different variants of the same character, each one
  39 belonging to its own script: @samp{emacs-mule} marks each character
  40 with its script, to better discern them from one another.
  41
  42 @item
  43 For simplicity, the functions @code{encode-coding-region} and
  44 @code{decode-coding-region} no longer accept an argument saying where
  45 to store the result of their conversions.  The result always replaces
  46 the original, so there's no need to look for it elsewhere.
  47
  48 @item
  49 Rmail now uses a special file format, Babyl format, designed specially
  50 for storing and editing mail.  When you visit a file in Rmail, or get new
  51 mail, Rmail converts it automatically to Babyl format.
  52
  53 @item
  54 Emacs no longer performs font anti-aliasing.  If your fonts look ugly,
  55 try choosing a larger font and increasing the screen resolution.
  56 Admittedly, this becomes difficult as you go further back in time,
  57 since available screen resolutions will decrease.
  58
  59 @item
  60 Emacs has added support for some soon-to-be-non-obsolete platforms.
  61 These include GNU/Linux systems based on libc version 5, BSD systems
  62 based on the COFF executable format, Solaris versions less than 2.6,
  63 and many more.
  64
  65 @item
  66 Emacs can no longer display frames on X windows and text terminals
  67 (ttys) simultaneously.  If you start Emacs as an X application, the
  68 Emacs job can only create X frames; if you start Emacs on a tty, the
  69 Emacs job can only use that tty.  No more confusion about which type
  70 of frame @command{emacsclient} will use in any given Emacs session!
  71
  72 @item
  73 Emacs can no longer be started as a daemon.  We decided that having an
  74 Emacs sitting silently in the background with no visual manifestation
  75 anywhere in sight is too confusing.
  76
  77 @item
  78 Transient Mark mode is now disabled by default.  Furthermore, some
  79 commands that operate specifically on the region when it is active and
  80 Transient Mark mode is enabled (such as @code{fill-paragraph}
  81 @code{ispell-word}, and @code{indent-for-tab-command}), no longer do
  82 so.
  83
  84 @item
  85 The line motion commands, @kbd{C-n} and @kbd{C-p}, now move by logical
  86 text lines, not screen lines.  Even if a long text line is continued
  87 over multiple screen lines, @kbd{C-n} and @kbd{C-p} treat it as a
  88 single line, because that's ultimately what it is.
  89
  90 @item
  91 Visual Line mode, which provides ``word wrap'' functionality, has been
  92 removed.  You can still use Long Lines mode to gain an approximation
  93 of word wrapping, though this has some drawbacks---for instance,
  94 syntax highlighting often doesn't work well on wrapped lines.
  95
  96 @item
  97 The variable @code{shift-select-mode} has been deleted; holding
  98 @key{shift} while typing a motion command no longer creates a
  99 temporarily active region.  You can still create temporarily active
 100 regions by dragging the mouse.
 101
 102 @item
 103 @kbd{C-l} now runs @code{recenter} instead of
 104 @code{recenter-top-bottom}.  This always sets the current line at the
 105 center of the window, instead of cycling through the center, top, and
 106 bottom of the window on successive invocations of @kbd{C-l}.  This
 107 lets you type @kbd{C-l C-l C-l C-l} to be @emph{absolutely sure} that
 108 you have recentered the line.
 109
 110 @item
 111 Typing @kbd{M-n} at the start of the minibuffer history list no longer
 112 attempts to generate guesses of possible minibuffer input.  It instead
 113 does the straightforward thing, by issuing the message @samp{End of
 114 history; no default available}.
 115
 116 @item
 117 Individual buffers can no longer display faces specially.  The text
 118 scaling commands @kbd{C-x C-+}, @kbd{C-x C--}, and @kbd{C-x C-0} have
 119 been removed, and so has the buffer face menu bound to
 120 @kbd{S-down-mouse-1}.
 121
 122 @item
 123 VC no longer supports fileset-based operations on distributed version
 124 control systems (DVCSs) such as Arch, Bazaar, Subversion, Mercurial,
 125 and Git.  For instance, multi-file commits will be performed by
 126 committing one file at a time.  As you go further back in time, we
 127 will remove DVCS support entirely, so start migrating your projects to
 128 CVS.
 129
 130 @item
 131 To keep up with decreasing computer memory capacity and disk space, many
 132 other functions and files have been eliminated in Emacs 22.3.
 133 @end itemize
 134
 135 @ignore
 136    arch-tag: 32932bd9-46f5-41b2-8a0e-fb0cc4caeb29
 137 @end ignore