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updated for version 7.0224

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Bram Moolenaar
2006-03-14 23:00:46 +00:00
parent 3b1ddfed51
commit 1f4d4de1ba
9 changed files with 358 additions and 78 deletions
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runtime/doc/undo.txt
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@@ -1,4 +1,4 @@
*undo.txt* For Vim version 7.0aa. Last change: 2006 Feb 28
*undo.txt* For Vim version 7.0aa. Last change: 2006 Mar 14
VIM REFERENCE MANUAL by Bram Moolenaar
@@ -11,7 +11,8 @@ The basics are explained in section |02.5| of the user manual.
1. Undo and redo commands |undo-commands|
2. Two ways of undo |undo-two-ways|
3. Undo blocks |undo-blocks|
4. Remarks about undo |undo-remarks|
4. Undo branches |undo-branches|
5. Remarks about undo |undo-remarks|
==============================================================================
1. Undo and redo commands *undo-commands*
@@ -102,7 +103,88 @@ After this an "u" command will undo the delete command and the previous
change.
==============================================================================
4. Remarks about undo *undo-remarks*
4. Undo branches *undo-branches*
Above we only discussed one line of undo. But it is also possible to branch
off. This happens when you undo a few changes and then make a new change.
The undone changes become a branch. You can go to that branch with the
following commands.
What matters here is the order in which the changes are made. Undo and redo
are not considered changes in this context. After each change you have a new
state of the text.
*g-*
g- Go to older text state. With a count repeat that many
times. {not in Vi}
*:ea* *:earlier*
:earlier {count} Go to older text state {count} times.
:earlier {N}s Go to older text state about {N} seconds before.
:earlier {N}m Go to older text state about {N} minutes before.
:earlier {N}h Go to older text state about {N} hours before.
*g+*
g+ Go to newer text state. With a count repeat that many
times. {not in Vi}
*:lat* *:later*
:later {count} Go to newer text state {count} times.
:later {N}s Go to newer text state about {N} seconds later.
:later {N}m Go to newer text state about {N} minutes later.
:later {N}h Go to newer text state about {N} hours later.
Note that text states will become unreachable when undo information is cleared
for 'undolevels'.
Don't be surprised when moving through time shows multiple changes to take
place at a time. This happens when moving through the undo tree and then
making a new change.
EXAMPLE
Start with this text:
one two three ~
Delete the first word by pressing "x" three times:
ne two three ~
e two three ~
two three ~
Now undo that by pressing "u" three times:
e two three ~
ne two three ~
one two three ~
Delete the second word by pressing "x" three times:
one wo three ~
one o three ~
one three ~
Now undo that by using "g-" three times:
one o three ~
one wo three ~
one two three ~
Continue going back in time by pressing "g-" one more time:
two three ~
You are now back in the first undo branch, after deleting "one". Repeating
"g-" will now bring you back to the original text:
e two three ~
ne two three ~
one two three ~
Jump to the last change with ":later 1h":
one three ~
And back to the start again with ":earlier 1h":
one two three ~
Note that using "u" and CTRL-R will not get you to all possible text states
while repeating "g-" and "g+" does.
==============================================================================
5. Remarks about undo *undo-remarks*
The number of changes that are remembered is set with the 'undolevels' option.
If it is zero, the Vi-compatible way is always used. If it is negative no