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authorChong Yidong <cyd@stupidchicken.com>2008-10-23 01:08:30 +0000
committerChong Yidong <cyd@stupidchicken.com>2008-10-23 01:08:30 +0000
commitfcda64545d0429388ca1928ca52b3635a4d82c89 (patch)
tree9d2c41a15db1f32a67dea43729f77417eb87b375 /doc
parent996cd6e43f728aff4648a9ba8681f5de56b67b9e (diff)
downloademacs-fcda64545d0429388ca1928ca52b3635a4d82c89.tar.gz
(Arguments): Explain how to insert multiple digits.
Diffstat (limited to 'doc')
-rw-r--r--doc/emacs/basic.texi31
1 files changed, 25 insertions, 6 deletions
diff --git a/doc/emacs/basic.texi b/doc/emacs/basic.texi
index c61b0e7d2a0..43b11dab225 100644
--- a/doc/emacs/basic.texi
+++ b/doc/emacs/basic.texi
@@ -607,7 +607,7 @@ direction.
@kindex M-@t{-}
@findex digit-argument
@findex negative-argument
- The easiest way to specify a numeric argument is to type digits
+ The easiest way to specify a numeric argument is to type a digit
and/or a minus sign while holding down the @key{META} key. For
example,
@@ -621,13 +621,32 @@ well as @kbd{M--}, are bound to commands (@code{digit-argument} and
@code{negative-argument}) that set up an argument for the next
command. @kbd{Meta--} without digits normally means @minus{}1.
+If you enter more than one digit, you need not hold down the
+@key{META} key for the second and subsequent digits. Thus, to move
+down fifty lines, type
+
+@example
+M-5 0 C-n
+@end example
+
+@noindent
+Note that this @emph{does not} insert five copies of @samp{0} and move
+down one line, as you might expect---the @samp{0} is treated as part
+of the prefix argument.
+
+(What if you do want to insert five copies of @samp{0}? Type @kbd{M-5
+C-u 0}. Here, @kbd{C-u} ``terminates'' the prefix argument, so that
+the next keystroke begins the command that you want to execute. Note
+that this meaning of @kbd{C-u} applies only to this case. For the
+usual role of @kbd{C-u}, see below.)
+
@kindex C-u
@findex universal-argument
- You can also specify a numeric argument by typing @kbd{C-u}
-(@code{universal-argument}) followed by the digits. The advantage of
-@kbd{C-u} is that you can type the digits without holding down the
-@key{META} key. For a negative argument, type a minus sign after
-@kbd{C-u}. A minus sign without digits normally means @minus{}1.
+ Instead of typing @kbd{M-1}, @kbd{M-2}, and so on, another way to
+specify a numeric argument is to type @kbd{C-u}
+(@code{universal-argument}) followed by some digits, or (for a
+negative argument) a minus sign followed by digits. A minus sign
+without digits normally means @minus{}1.
@kbd{C-u} alone has the special meaning of ``four times'': it
multiplies the argument for the next command by four. @kbd{C-u C-u}