man/anti.texi

   1 @c This is part of the Emacs manual.
   2 @c Copyright (C) 1997, 1999 Free Software Foundation, Inc.
   3 @c See file emacs.texi for copying conditions.
   4
   5 @node Antinews, MS-DOS, Command Arguments, Top
   6 @appendix Emacs 19 Antinews
   7
   8   For those users who live backwards in time, here is information about
   9 downgrading to Emacs version 19.  We hope you will enjoy the greater
  10 simplicity that results from the absence of certain Emacs 20 features.
  11
  12 @itemize @bullet
  13 @item
  14 The multibyte character and end-of-line conversion support have been
  15 eliminated entirely.  (Some users consider this a tremendous
  16 improvement.)  Character codes are limited to the range 0 through 255
  17 and files imported onto Unix-like systems may have a ^M at the end of
  18 each line to remind you to control MS-DOG type files.
  19
  20 @item
  21 Fontsets, coding systems and input methods have been eliminated as well.
  22
  23 @item
  24 The mode line normally displays the string @samp{Emacs}, in case you
  25 forget what editor you are using.
  26
  27 @item
  28 Scroll bars always appear on the right-hand side of the window.
  29 This clearly separates them from the text in the window.
  30
  31 @item
  32 The @kbd{M-x customize} feature has been replaced with a very simple
  33 feature, @kbd{M-x edit-options}.  This shows you @emph{all} the user
  34 options right from the start, so you don't have to hunt for the ones you
  35 want.  It also provides a few commands, such as @kbd{s} and @kbd{x}, to
  36 set a user option.
  37
  38 @item
  39 The @key{DELETE} key does nothing special in Emacs 19 when you use it
  40 after selecting a region with the mouse.  It does exactly the same thing
  41 in that situation as it does at all other times: delete one character
  42 backwards.
  43
  44 @item
  45 @kbd{C-x C-w} no longer changes the major mode according to the new file
  46 name.  If you want to change the mode, use @kbd{M-x normal-mode}.
  47
  48 @item
  49 In Transient Mark mode, each window displays highlighting for the region
  50 as it exists in that window.
  51
  52 @item
  53 Outline mode doesn't use overlay properties; instead, it hides a line by
  54 converting the preceding newline into code 015.  Magically, however, if
  55 you save the file, the 015 character appears in the file as a newline.
  56
  57 @item
  58 There is now a clever way you can activate the minibuffer recursively
  59 even if @code{enable-recursive-minibuffers} is @code{nil}.  All you have
  60 to do is @emph{switch windows} to a non-minibuffer window, and then use a
  61 minibuffer command.  You can pile up any number of minibuffer levels
  62 this way, but @kbd{M-x top-level} will get you out of all of them.
  63
  64 @item
  65 We have removed the limit on the length of minibuffer history lists;
  66 they now contain all the minibuffer arguments you have used since the
  67 beginning of the session.
  68
  69 @item
  70 Dynamic abbrev expansion now handles case conversion in a very simple
  71 and straightforward way.  If you have requested preserving case, it
  72 always converts the entire expansion to the case pattern of the abbrev
  73 that you have typed in.
  74
  75 @item
  76 The @code{compose-mail} command does not exist; @kbd{C-x m} now
  77 runs @code{mail} directly.
  78
  79 @item
  80 There is no way to quote a file name with special characters in it.
  81 What you see is what you get: if the name looks remote, it is remote.
  82
  83 @item
  84 @kbd{M-x grep-find} has been eliminated, because @code{grep} has never
  85 been lost.
  86
  87 @ignore
  88 @item
  89 Truth in advertising: @kbd{M-x grep} by default uses @code{grep}, the
  90 whole @code{grep}, and nothing but the @code{grep}.  If you want it to
  91 use @code{zgrep}, you'll have to edit the search command by hand.
  92 @end ignore
  93
  94 @item
  95 Some Dired commands have been rearranged: two-character sequences
  96 have been replaced with quick single-character commands:
  97
  98 @itemize @bullet
  99 @item
 100 For @code{dired-mark-executables}, type @kbd{*}.
 101 @item
 102 For @code{dired-mark-directories}, type @kbd{/}.
 103 @item
 104 For @code{dired-mark-symlinks}, type @kbd{@@}.
 105 @item
 106 For @code{dired-change-marks}, type @kbd{c}.
 107 @item
 108 For @code{dired-unmark-all-files}, type @kbd{C-M-?}.
 109 @item
 110 For @code{dired-unmark-all-marks}, type @kbd{C-M-? @key{RET}}.
 111 @end itemize
 112
 113 But if you want to use @code{dired-flag-garbage-files}, @kbd{&}, you'll
 114 just have to stop living in the past.
 115
 116 @item
 117 In C mode, you can now specify your preferred style for block comments.
 118 If you want to use the style
 119
 120 @example
 121 /*
 122 blah
 123 blah
 124 */
 125 @end example
 126
 127 @noindent
 128 then you should set the variable @code{c-block-comments-indent-p} to
 129 @code{t}.
 130
 131 @item
 132 To customize faces used by Font Lock mode, use the variable
 133 @code{font-lock-face-attributes}.  See its documentation string for
 134 details.
 135
 136 @item
 137 For efficiency, Font Lock mode now uses by default the minimum supported
 138 level of decoration for the selected major mode.
 139
 140 @item
 141 If you kill a buffer, any registers holding saved positions in that
 142 buffer are changed to point into limbo.
 143
 144 @item
 145 The function @code{set-frame-font} has been renamed to
 146 @code{set-default-font}.
 147
 148 @item
 149 The variable @code{tex-main-file} doesn't exist.  Of course, you can
 150 create the variable by setting it, but that won't do anything special.
 151
 152 @item
 153 The @code{scroll-preserve-screen-position} variable has been eliminated;
 154 and so has the feature that it controls.
 155
 156 @item
 157 We have eliminated the functions @code{add-untranslated-filesystem} and
 158 @code{remove-untranslated-filesystem}, and replaced them with a simpler
 159 function, @code{using-unix-filesystems}.
 160
 161 @item
 162 To keep up with decreasing computer memory capacity, many other
 163 functions and files have been eliminated in Emacs 19.  There's no need
 164 to mention them all here.  If you try to use one of them, you'll get an
 165 error message to tell you that it is undefined or unbound.
 166 @end itemize