[Emacs-diffs] Changes to fixit.texi

[Glenn Morris]

CVSROOT:        /sources/emacs
Module name:    emacs
Changes by:     Glenn Morris <gm>       07/09/06 04:45:56

Index: fixit.texi
===================================================================
RCS file: fixit.texi
diff -N fixit.texi
--- /dev/null   1 Jan 1970 00:00:00 -0000
+++ fixit.texi  6 Sep 2007 04:45:56 -0000       1.1
@@ -0,0 +1,471 @@
address@hidden This is part of the Emacs manual.
address@hidden Copyright (C) 1985, 1986, 1987, 1993, 1994, 1995, 1997, 2001, 
2002,
address@hidden   2003, 2004, 2005, 2006, 2007  Free Software Foundation, Inc.
address@hidden See file emacs.texi for copying conditions.
address@hidden Fixit, Keyboard Macros, Search, Top
address@hidden Commands for Fixing Typos
address@hidden typos, fixing
address@hidden mistakes, correcting
+
+  In this chapter we describe the commands that are especially useful for
+the times when you catch a mistake in your text just after you have made
+it, or change your mind while composing text on the fly.
+
+  The most fundamental command for correcting erroneous editing is the
+undo command, @kbd{C-x u} or @kbd{C-_} or @kbd{C-/}.  This command
+undoes a single command (usually), a part of a command (in the case of
address@hidden), or several consecutive self-inserting
+characters.  Consecutive repetitions of the undo command undo earlier
+and earlier changes, back to the limit of the undo information
+available.  @xref{Undo}, for more information.
+
address@hidden
+* Undo::        The Undo commands.
+* Kill Errors:: Commands to kill a batch of recently entered text.
+* Transpose::   Exchanging two characters, words, lines, lists...
+* Fixing Case:: Correcting case of last word entered.
+* Spelling::    Apply spelling checker to a word, or a whole file.
address@hidden menu
+
address@hidden Undo
address@hidden Undo
address@hidden undo
address@hidden changes, undoing
+
+  The @dfn{undo} commands undo recent changes in the buffer's text.
+Each buffer records changes individually, and the undo command always
+applies to the current buffer.  You can undo all the changes in a
+buffer for as far as back these records go.  Usually each editing
+command makes a separate entry in the undo records, but some commands
+such as @code{query-replace} divide their changes into multiple
+entries for flexibility in undoing.  Meanwhile, self-inserting
+characters are usually grouped to make undoing less tedious.
+
address@hidden @kbd
address@hidden C-x u
address@hidden C-_
address@hidden C-/
+Undo one entry in the current buffer's undo records (@code{undo}).
address@hidden table
+
address@hidden C-x u
address@hidden C-_
address@hidden C-/
address@hidden undo
+  To begin to undo, type the command @kbd{C-x u} (or its aliases,
address@hidden or @kbd{C-/}).  This undoes the most recent change in the
+buffer, and moves point back to where it was before that change.
+
+  Consecutive repetitions of @kbd{C-x u} (or its aliases) undo earlier
+and earlier changes in the current buffer, back to the limit of the
+current buffer's undo records.  If all the recorded changes have
+already been undone, the undo command just signals an error.
+
+  If you notice that a buffer has been modified accidentally, the
+easiest way to recover is to type @kbd{C-_} repeatedly until the stars
+disappear from the front of the mode line.  At this time, all the
+modifications you made have been canceled.  Whenever an undo command
+makes the stars disappear from the mode line, it means that the buffer
+contents are the same as they were when the file was last read in or
+saved.
+
+  If you do not remember whether you changed the buffer deliberately,
+type @kbd{C-_} once.  When you see the last change you made undone, you
+will see whether it was an intentional change.  If it was an accident,
+leave it undone.  If it was deliberate, redo the change as described
+below.
+
address@hidden undo-only
+  Any command other than an undo command breaks the sequence of undo
+commands.  Starting from that moment, the previous undo commands
+become ordinary changes that you can undo.  Thus, to redo changes you
+have undone, type @kbd{C-f} or any other command that will harmlessly
+break the sequence of undoing, then type undo commands again.  On the
+other hand, if you want to resume undoing, without redoing previous
+undo commands, use @kbd{M-x undo-only}.  This is like @code{undo}, but
+will not redo changes you have just undone.
+
address@hidden selective undo
address@hidden C-u C-x u
+  Ordinary undo applies to all changes made in the current buffer.  You
+can also perform @dfn{selective undo}, limited to the region.
+
+  To do this, specify the region you want, then run the @code{undo}
+command with a prefix argument (the value does not matter): @kbd{C-u
+C-x u} or @kbd{C-u C-_}.  This undoes the most recent change in the
+region.  To undo further changes in the same region, repeat the
address@hidden command (no prefix argument is needed).  In Transient Mark
+mode (@pxref{Transient Mark}), any use of @code{undo} when there is an
+active region performs selective undo; you do not need a prefix
+argument.
+
+  Some specialized buffers do not make undo records.  Buffers
+whose names start with spaces never do; these buffers are used
+internally by Emacs and its extensions to hold text that users don't
+normally look at or edit.
+
address@hidden undo-limit
address@hidden undo-strong-limit
address@hidden undo-outer-limit
address@hidden undo limit
+  When the undo records for a buffer becomes too large, Emacs
+discards the oldest undo records from time to time (during garbage
+collection).  You can specify how much undo records to keep by
+setting three variables: @code{undo-limit}, @code{undo-strong-limit},
+and @code{undo-outer-limit}.  Their values are expressed in units of
+bytes of space.
+
+  The variable @code{undo-limit} sets a soft limit: Emacs keeps undo
+data for enough commands to reach this size, and perhaps exceed it,
+but does not keep data for any earlier commands beyond that.  Its
+default value is 20000.  The variable @code{undo-strong-limit} sets a
+stricter limit: a previous command (not the most recent one) which
+pushes the size past this amount is itself forgotten.  The default
+value of @code{undo-strong-limit} is 30000.
+
+  Regardless of the values of those variables, the most recent change
+is never discarded unless it gets bigger than @code{undo-outer-limit}
+(normally 3,000,000).  At that point, Emacs discards the undo data and
+warns you about it.  This is the only situation in which you cannot
+undo the last command.  If this happens, you can increase the value of
address@hidden to make it even less likely to happen in the
+future.  But if you didn't expect the command to create such large
+undo data, then it is probably a bug and you should report it.
address@hidden,, Reporting Bugs}.
+
+  The reason the @code{undo} command has three key bindings, @kbd{C-x
+u}, @kbd{C-_} and @kbd{C-/}, is that it is worthy of a
+single-character key, but @kbd{C-x u} is more straightforward for
+beginners to remember and type.  Meanwhile, @kbd{C--} on a text-only
+terminal is really @kbd{C-_}, which makes it a natural and easily
+typed binding for undoing.
+
address@hidden Kill Errors
address@hidden Killing Your Mistakes
+
address@hidden @kbd
address@hidden @key{DEL}
+Delete last character (@code{delete-backward-char}).
address@hidden address@hidden
+Kill last word (@code{backward-kill-word}).
address@hidden C-x @key{DEL}
+Kill to beginning of sentence (@code{backward-kill-sentence}).
address@hidden table
+
+  The @key{DEL} character (@code{delete-backward-char}) is the most
+important correction command.  It deletes the character before point.
+When @key{DEL} follows a self-inserting character command, you can think
+of it as canceling that command.  However, avoid the confusion of thinking
+of @key{DEL} as a general way to cancel a command!
+
+  When your mistake is longer than a couple of characters, it might be
+more convenient to use @address@hidden or @kbd{C-x @key{DEL}}.
address@hidden@key{DEL}} kills back to the start of the last word, and @kbd{C-x
address@hidden kills back to the start of the last sentence.  @kbd{C-x
address@hidden is particularly useful when you change your mind about the
+phrasing of the text you are writing.  @address@hidden and @kbd{C-x
address@hidden save the killed text for @kbd{C-y} and @kbd{M-y} to
+retrieve.  @address@hidden
+
+  @address@hidden is often useful even when you have typed only a few
+characters wrong, if you know you are confused in your typing and aren't
+sure exactly what you typed.  At such a time, you cannot correct with
address@hidden except by looking at the screen to see what you did.  Often it
+requires less thought to kill the whole word and start again.
+
address@hidden Transpose
address@hidden Transposing Text
+
address@hidden @kbd
address@hidden C-t
+Transpose two characters (@code{transpose-chars}).
address@hidden M-t
+Transpose two words (@code{transpose-words}).
address@hidden C-M-t
+Transpose two balanced expressions (@code{transpose-sexps}).
address@hidden C-x C-t
+Transpose two lines (@code{transpose-lines}).
address@hidden table
+
address@hidden C-t
address@hidden transpose-chars
+  The common error of transposing two characters can be fixed, when they
+are adjacent, with the @kbd{C-t} command (@code{transpose-chars}).  Normally,
address@hidden transposes the two characters on either side of point.  When
+given at the end of a line, rather than transposing the last character of
+the line with the newline, which would be useless, @kbd{C-t} transposes the
+last two characters on the line.  So, if you catch your transposition error
+right away, you can fix it with just a @kbd{C-t}.  If you don't catch it so
+fast, you must move the cursor back between the two transposed
+characters before you type @kbd{C-t}.  If you transposed a space with
+the last character of the word before it, the word motion commands are
+a good way of getting there.  Otherwise, a reverse search (@kbd{C-r})
+is often the best way.  @xref{Search}.
+
address@hidden C-x C-t
address@hidden transpose-lines
address@hidden M-t
address@hidden transpose-words
address@hidden Don't index C-M-t and transpose-sexps here, they are indexed in
address@hidden programs.texi, in the "List Commands" node.
address@hidden @kindex C-M-t
address@hidden @findex transpose-sexps
+  @kbd{M-t} transposes the word before point with the word after point
+(@code{transpose-words}).  It moves point forward over a word,
+dragging the word preceding or containing point forward as well.  The
+punctuation characters between the words do not move.  For example,
address@hidden@samp{FOO, BAR}} transposes into @address@hidden, FOO}} rather 
than
address@hidden@w{BAR FOO,}}.
+
+  @kbd{C-M-t} (@code{transpose-sexps}) is a similar command for
+transposing two expressions (@pxref{Expressions}), and @kbd{C-x C-t}
+(@code{transpose-lines}) exchanges lines.  They work like @kbd{M-t}
+except as regards what units of text they transpose.
+
+  A numeric argument to a transpose command serves as a repeat count: it
+tells the transpose command to move the character (word, expression, line)
+before or containing point across several other characters (words,
+expressions, lines).  For example, @kbd{C-u 3 C-t} moves the character before
+point forward across three other characters.  It would change
address@hidden@point{}oobar} into @address@hidden  This is equivalent to
+repeating @kbd{C-t} three times.  @kbd{C-u - 4 M-t} moves the word
+before point backward across four words.  @kbd{C-u - C-M-t} would cancel
+the effect of plain @address@hidden
+
+  A numeric argument of zero is assigned a special meaning (because
+otherwise a command with a repeat count of zero would do nothing): to
+transpose the character (word, expression, line) ending after point
+with the one ending after the mark.
+
address@hidden Fixing Case
address@hidden Case Conversion
+
address@hidden @kbd
address@hidden M-- M-l
+Convert last word to lower case.  Note @kbd{Meta--} is Meta-minus.
address@hidden M-- M-u
+Convert last word to all upper case.
address@hidden M-- M-c
+Convert last word to lower case with capital initial.
address@hidden table
+
address@hidden address@hidden M-l
address@hidden address@hidden M-u
address@hidden address@hidden M-c
+  A very common error is to type words in the wrong case.  Because of this,
+the word case-conversion commands @kbd{M-l}, @kbd{M-u} and @kbd{M-c} have a
+special feature when used with a negative argument: they do not move the
+cursor.  As soon as you see you have mistyped the last word, you can simply
+case-convert it and go on typing.  @address@hidden
+
address@hidden Spelling
address@hidden Checking and Correcting Spelling
address@hidden spelling, checking and correcting
address@hidden checking spelling
address@hidden correcting spelling
+
+  This section describes the commands to check the spelling of a single
+word or of a portion of a buffer.  These commands work with the spelling
+checker programs Aspell and Ispell, which are not part of Emacs.
address@hidden
address@hidden, Aspell,, aspell, The Aspell Manual}.
address@hidden ifnottex
+
address@hidden @kbd
address@hidden M-x flyspell-mode
+Enable Flyspell mode, which highlights all misspelled words.
address@hidden M-x flyspell-prog-mode
+Enable Flyspell mode for comments and strings only.
address@hidden M-$
+Check and correct spelling of the word at point (@code{ispell-word}).
address@hidden address@hidden
address@hidden @key{ESC} @key{TAB}
+Complete the word before point based on the spelling dictionary
+(@code{ispell-complete-word}).
address@hidden M-x ispell
+Spell-check the active region or the current buffer.
address@hidden M-x ispell-buffer
+Check and correct spelling of each word in the buffer.
address@hidden M-x ispell-region
+Check and correct spelling of each word in the region.
address@hidden M-x ispell-message
+Check and correct spelling of each word in a draft mail message,
+excluding cited material.
address@hidden M-x ispell-change-dictionary @key{RET} @var{dict} @key{RET}
+Restart the Aspell or Ispell process, using @var{dict} as the dictionary.
address@hidden M-x ispell-kill-ispell
+Kill the Aspell or Ispell subprocess.
address@hidden table
+
address@hidden Flyspell mode
address@hidden flyspell-mode
+  Flyspell mode is a fully-automatic way to check spelling as you edit
+in Emacs.  It operates by checking words as you change or insert them.
+When it finds a word that it does not recognize, it highlights that
+word.  This does not interfere with your editing, but when you see the
+highlighted word, you can move to it and fix it.  Type @kbd{M-x
+flyspell-mode} to enable or disable this mode in the current buffer.
+
+  When Flyspell mode highlights a word as misspelled, you can click on
+it with @kbd{Mouse-2} to display a menu of possible corrections and
+actions.  You can also correct the word by editing it manually in any
+way you like.
+
address@hidden flyspell-prog-mode
+Flyspell Prog mode works just like ordinary Flyspell mode, except that
+it only checks words in comments and string constants.  This feature
+is useful for editing programs.  Type @kbd{M-x flyspell-prog-mode} to
+enable or disable this mode in the current buffer.
+
+  The other Emacs spell-checking features check or look up words when
+you give an explicit command to do so.
+
address@hidden M-$
address@hidden ispell-word
+  To check the spelling of the word around or before point, and
+optionally correct it as well, use the command @kbd{M-$}
+(@code{ispell-word}).  If the word is not correct, the command offers
+you various alternatives for what to do about it.
+
address@hidden ispell-buffer
address@hidden ispell-region
+  To check the entire current buffer, use @kbd{M-x ispell-buffer}.  Use
address@hidden ispell-region} to check just the current region.  To check
+spelling in an email message you are writing, use @kbd{M-x
+ispell-message}; that command checks the whole buffer, except for
+material that is indented or appears to be cited from other messages.
+
address@hidden ispell
address@hidden spell-checking the active region
+  The @kbd{M-x ispell} command spell-checks the active region if the
+Transient Mark mode is on (@pxref{Transient Mark}), otherwise it
+spell-checks the current buffer.
+
+  Each time these commands encounter an incorrect word, they ask you
+what to do.  They display a list of alternatives, usually including
+several ``near-misses''---words that are close to the word being
+checked.  Then you must type a single-character response.  Here are
+the valid responses:
+
address@hidden @kbd
address@hidden @key{SPC}
+Skip this word---continue to consider it incorrect, but don't change it
+here.
+
address@hidden r @var{new} @key{RET}
+Replace the word (just this time) with @var{new}.  (The replacement
+string will be rescanned for more spelling errors.)
+
address@hidden R @var{new} @key{RET}
+Replace the word with @var{new}, and do a @code{query-replace} so you
+can replace it elsewhere in the buffer if you wish.  (The replacements
+will be rescanned for more spelling errors.)
+
address@hidden @var{digit}
+Replace the word (just this time) with one of the displayed
+near-misses.  Each near-miss is listed with a digit; type that digit to
+select it.
+
address@hidden a
+Accept the incorrect word---treat it as correct, but only in this
+editing session.
+
address@hidden A
+Accept the incorrect word---treat it as correct, but only in this
+editing session and for this buffer.
+
address@hidden i
+Insert this word in your private dictionary file so that Aspell or Ispell will
+consider it correct from now on, even in future sessions.
+
address@hidden u
+Insert the lower-case version of this word in your private address@hidden@-ary
+file.
+
address@hidden m
+Like @kbd{i}, but you can also specify dictionary completion
+information.
+
address@hidden l @var{word} @key{RET}
+Look in the dictionary for words that match @var{word}.  These words
+become the new list of ``near-misses''; you can select one of them as
+the replacement by typing a digit.  You can use @samp{*} in @var{word} as a
+wildcard.
+
address@hidden C-g
+Quit interactive spell checking, leaving point at the word that was
+being checked.  You can restart checking again afterward with @kbd{C-u
+M-$}.
+
address@hidden X
+Same as @kbd{C-g}.
+
address@hidden x
+Quit interactive spell checking and move point back to where it was
+when you started spell checking.
+
address@hidden q
+Quit interactive spell checking and kill the Ispell subprocess.
+
address@hidden C-l
+Refresh the screen.
+
address@hidden C-z
+This key has its normal command meaning (suspend Emacs or iconify this
+frame).
+
address@hidden ?
+Show the list of options.
address@hidden table
+
address@hidden ispell-complete-word
+  The command @code{ispell-complete-word}, which is bound to the key
address@hidden@key{TAB}} in Text mode and related modes, shows a list of
+completions based on spelling correction.  Insert the beginning of a
+word, and then type @address@hidden; the command displays a
+completion list window.  (If your window manager intercepts
address@hidden@key{TAB}}, type @address@hidden @key{TAB}} or @kbd{C-M-i}.)  To
+choose one of the completions listed, click @kbd{Mouse-2} or
address@hidden fast on it, or move the cursor there in the completions
+window and type @key{RET}.  @xref{Text Mode}.
+
address@hidden
address@hidden reload-ispell
+  The first time you use any of the spell checking commands, it starts
+an Ispell subprocess.  The first thing the subprocess does is read your
+private dictionary, which defaults to the file @file{~/ispell.words}.
+Words that you ``insert'' with the @kbd{i} command are added to that
+file, but not right away---only at the end of the interactive
+replacement procedure.  Use the @kbd{M-x reload-ispell} command to
+reload your private dictionary if you edit the file outside of Ispell.
address@hidden ignore
+
address@hidden @code{ispell} program
address@hidden ispell-kill-ispell
+  Once started, the Aspell or Ispell subprocess continues to run
+(waiting for something to do), so that subsequent spell checking
+commands complete more quickly.  If you want to get rid of the
+process, use @kbd{M-x ispell-kill-ispell}.  This is not usually
+necessary, since the process uses no time except when you do spelling
+correction.
+
address@hidden ispell-dictionary
+  Ispell and Aspell use two dictionaries together for spell checking: the
+standard dictionary and your private dictionary.  The variable
address@hidden specifies the file name to use for the
+standard dictionary; a value of @code{nil} selects the default
+dictionary.  The command @kbd{M-x ispell-change-dictionary} sets this
+variable and then restarts the subprocess, so that it will use
+a different standard dictionary.
+
address@hidden ispell-complete-word-dict
+  Aspell and Ispell use a separate dictionary for word completion.
+The variable @code{ispell-complete-word-dict} specifies the file name
+of this dictionary.  The completion dictionary must be different
+because it cannot use root and affix information.  For some languages
+there is a spell checking dictionary but no word completion
+dictionary.
+
address@hidden
+   arch-tag: 3359a443-96ed-448f-9f05-c8111ba8eac0
address@hidden ignore