Commit f69ecc21 authored by Richard M. Stallman's avatar Richard M. Stallman
Browse files

(Selective Undo): New node, text moved from basic.texi.

(Mark): Put it in the menu.
parent 713d2b54
......@@ -44,6 +44,7 @@ mark in the @dfn{mark ring}.
when there is one.
* Momentary Mark:: Enabling Transient Mark mode momentarily.
* Using Region:: Summary of ways to operate on contents of the region.
* Selective Undo:: Undoing within a given region.
* Marking Objects:: Commands to put region around textual units.
* Mark Ring:: Previous mark positions saved so you can go back there.
* Global Mark Ring:: Previous mark positions in various buffers.
......@@ -297,11 +298,31 @@ Fill it as text with @kbd{M-x fill-region} (@pxref{Filling}).
Print hardcopy with @kbd{M-x print-region} (@pxref{Printing}).
@item
Evaluate it as Lisp code with @kbd{M-x eval-region} (@pxref{Lisp Eval}).
@item
Undo changes within it using @kbd{C-u C-x u} (@pxref{Selective Undo}).
@end itemize
Most commands that operate on the text in the region have the word
@code{region} in their names.
@node Selective Undo
@section Selective Undo
@cindex selective undo
@kindex 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 current region
(@pxref{Mark}).
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
@code{undo} 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.
@node Marking Objects
@section Commands to Mark Textual Objects
......
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