Lets say i have the following text.
this.is.some.text
this.is.emos.text
this.is.some.text
this.is.emos.text
I want to edit this text in 'Visual Block' mode so that the text looks as follows.
this.is.some.text
this.is.emos_suffix.text
this.is.some.text
this.is.emos_suffix.text
It should work like this:
Select a visual block
If the visual block contains emos append '_suffix' to the visual
block (Just like the 'A' command would do)
The only native way to accomplish that from visual-block mode or any other visual mode is to use a substitution:
:'<,'>s/emos/&_suffix<CR>
where…
you press :,
Vim inserts the range '<,'> for you, meaning "from the fist selected line, :help '<, through the last selected line, :help '>`,
s/emos/&_suffix substitutes every first occurrence of emos on each line of the given range with itself, :help s/\&, followed by _suffix.
Visual selection is often an unnecessary step and, in this case, visual-block mode is totally useless because A or I is going to operate on every line of the selection anyway.
Another method:
/emos/e<CR>
a_suffix<Esc>
n
.
Another one:
/emos<CR>
cgn<C-r>"
_suffix<Esc>
.
Another one, assuming the cursor is on the first line of your sample:
:,'}s/emos/&_suffix<CR>
Etc.
I want to wrap some code :
myObj.text;
with a function call where the code is passed as an argument.
console.log(myObj.text);
I've thought about using surround.vim to do that but didn't manage to do it.
Any idea if it's possible ? I
With Surround in normal mode:
ysiwfconsole.log<CR>
With Surround in visual mode:
Sfconsole.log<CR>
Without Surround in normal mode:
ciwconsole.log(<C-r>")<Esc>
Without Surround in visual mode:
cconsole.log(<C-r>")<Esc>
But that's not very scalable. A mapping would certainly be more useful since you will almost certainly need to do it often:
xnoremap <key> cconsole.log(<C-r>")<Esc>
nnoremap <key> ciwconsole.log(<C-r>")<Esc>
which brings us back to Surround, which already does that—and more—very elegantly.
I know and use two different ways to accomplish this:
Variant 1:
Select the text you want to wrap in visual mode (hit v followed by whatever movements are appropriate).
Replace that text by hitting c, then type your function call console.log(). (The old text is not gone, it's just moved into a register, from where it will be promptly retrieved in step 3.) Hit <esc> while you are behind the closing parenthese, that should leave you on the ) character.
Paste the replaced text into the parentheses by hitting P (this inserts before the character you are currently on, so right between the ( and the )).
The entire sequence is v<movement>c<functionName>()<esc>P.
Variant 2:
Alternatively to leaving insert mode and pasting from normal mode, you can just as well paste directly from insertion mode by hitting <ctrl>R followed by ".
The entire sequence is v<movement>c<functionName>(<ctrl>R")<esc>.
You can use substitution instruction combined with visual mode
To change bar to foo(bar):
press v and select text you want (plus one more character) to surround with function call (^v$ will select whole text on current line including the newline character at the end)
type :s/\%V.*\%V/foo\(&\)/<CR>
Explanation:
s/a/b/g means 'substitute first match of a with b on current line'
\%V.*\%V matches visual selection without last character
& means 'matched text' (bar in this case)
foo\(&\) gives 'matched text surrounded with foo(...) '
<CR> means 'press enter'
Notes
For this to work you have to visually select also next character after bar (^v$ selects also the newline character at the end, so it's fine)
might be some problems with multiline selections, haven't checked it yet
when I press : in visual mode, it puts '<,'> in command line, but that doesn't interfere with rest of the command (it even prevents substitution, when selected text appears also somewhere earlier on current line) - :'<,'>s/... still works
I want to replace all spaces with an underscore, in the currently highlighted block i.e. not to apply it on the entire page.
How can I do this?
When in visual mode type:
:s/\%V /_/g
see http://vim.wikia.com/wiki/VimTip438
You could go into visual mode (by typing v while in command mode) and then select the required text and thereafter enter the command mode (by typing ":"). This will automatically insert the selection range and then you could perform the necessary substitution.
Go to visual mode by typing v
Select the necessary text.
Type : to enter command mode. You would find in the prompt below :'<,'>
The final command would look like this :'<,'>s/ /_/g
When I pop into Vim's visual mode to, for example, indent a block of text, the command prompt always starts with '<,'>. Can someone break down for me why this is or rather what it does? It seems like it's got something to do with markers but I'm not entirely sure of this based on the manual stuff I've read so far.
'< is the first line visually selected, and '> is the last line visually selected. This is vim's way of making your command apply to only the visual area.
The '<,'> at the beginning of your command line represents the range which you have selected . This is the also the range of test onto which the command you are about to enter would be applied.
For example if I selected a region of text in visual mode and then wanted to replace all occurrences of 'stack' with 'overflow' my command would look like:
:'<,'>s/stack/overflow/g
Without visual mode this same command would have to be accomplished by specifying the line range by hand eg:
:1,10s/helo/hello/g
It's a range defined by two special marks (a mark in an anchor in the text named as "quote+1 letter")
'< `< To the first line or character of the last selected Visual
area in the current buffer. For block mode it may also be the last
character in the first line (to be able to define the block). {not
in Vi}.
'> `> To the last line or character of the last selected Visual
area in the current buffer. For block mode it may also be the
first character of the last line (to be able to define the block).
Note that 'selection' applies, the position may be just after the
Visual area. {not in Vi}.
Source
Once you select in Visual Mode e.g. five lines, then '<,'> means that you will execute the command in that region.
so :'<,'>s/replaceMe/WithThis/g will apply to only that selection
Taking the time to add some points of trivia to the already given answers
:* usually means the same (:he cpo-star),
hitting C-u in command line mode removes the range marker (actually, removes to the beginning of the line)
Selecting a large amount of text that extends over many screens in an IDE like Eclipse is fairly easy since you can use the mouse, but what is the best way to e.g. select and delete multiscreen blocks of text or write e.g. three large methods out to another file and then delete them for testing purposes in Vim when using it via putty/ssh where you cannot use the mouse?
I can easily yank-to-the-end-of-line or yank-to-the-end-of-code-block but if the text extends over many screens, or has lots of blank lines in it, I feel like my hands are tied in Vim. Any solutions?
And a related question: is there a way to somehow select 40 lines, and then comment them all out (with "#" or "//"), as is common in most IDEs?
Well, first of all, you can set vim to work with the mouse, which would allow you to select text just like you would in Eclipse.
You can also use the Visual selection - v, by default. Once selected, you can yank, cut, etc.
As far as commenting out the block, I usually select it with VISUAL, then do
:'<,'>s/^/# /
Replacing the beginning of each line with a #. (The '< and '> markers are the beginning and and of the visual selection.
Use markers.
Go to the top of the text block you want to delete and enter
ma
anywhere on that line. No need for the colon.
Then go to the end of the block and enter the following:
:'a,.d
Entering ma has set marker a for the character under the cursor.
The command you have entered after moving to the bottom of the text block says "from the line containing the character described by marker a ('a) to the current line (.) delete."
This sort of thing can be used for other things as well.
:'a,.ya b - yank from 'a to current line and put in buffer 'b'
:'a,.ya B - yank from 'a to current line and append to buffer 'b'
:'a,.s/^/#/ - from 'a to current line, substitute '#' for line begin
(i.e. comment out in Perl)
:'s,.s#^#//# - from 'a to current line, substitute '//' for line begin
(i.e. comment out in C++)
N.B. 'a (apostrophe-a) refers to the line containing the character marked by a. ``a(backtick-a) refers to the character marked bya`.
To insert comments select the beginning characters of the lines using CTRL-v (blockwise-visual, not 'v' character wise-visual or 'V' linewise-visual). Then go to insert-mode using 'I', enter your comment-character(s) on the first line (for example '#') and finally escape to normal mode using 'Esc'. Voila!
To remove the comments use blockwise-visual to select the comments and just delete them using 'x'.
Use the visual block command v (or V for whole lines and C-V for rectangular blocks). While in visual block mode, you can use any motion commands including search; I use } frequently to skip to the next blank line. Once the block is marked, you can :w it to a file, delete, yank, or whatever. If you execute a command and the visual block goes away, re-select the same block with gv. See :help visual-change for more.
I think there are language-specific scripts that come with vim that do things like comment out blocks of code in a way that fits your language of choice.
Press V (uppercase V) and then press 40j to select 40 lines and then press d to delete them. Or as #zigdon replied, you can comment them out.
The visual mode is the solution for your main problem. As to commenting out sections of code, there are many plugins for that on vim.org, I am using tComment.vim at the moment.
There is also a neat way to comment out a block without a plugin. Lets say you work in python and # is the comment character. Make a visual block selection of the column you want the hash sign to be in, and type I#ESCAPE. To enter a visual block mode press C-q on windows or C-v on linux.
My block comment technique:
Ctrl+V to start blockwise visual mode.
Make your selection.
With the selection still active, Shift+I. This put you into column insert mode.
Type you comment characters '#' or '//' or whatever.
ESC.
Or you may want to give this script a try...
http://www.vim.org/scripts/script.php?script_id=23
For commenting out lines, I would suggest one of these plugins:
EnhancedCommentify
NERD Commenter
I find myself using NERD more these days, but I've used EnhancedCommentify for years.
If you want to perform an action on a range of lines, and you know the line numbers, you can put the range on the command line. For instance, to delete lines 20 through 200 you can do:
:20,200d
To move lines 20 through 200 to where line 300 is you can use:
:20,200m300
And so on.
Use Shift+V to go in visual mode, then you can select lines and delete / change them.
My usual method for commenting out 40 lines would be to put the cursor on the first line and enter the command:
:.,+40s/^/# /
(For here thru 40 lines forward, substitute start-of-line with hash, space)
Seems a bit longer than some other methods suggested, but I like to do things with the keyboard instead of the mouse.
First answer is currently not quite right?
To comment out selection press ':' and type command
:'<,'>s/^/# /g
('<, '> - will be there automatically)
You should be aware of the normal mode command [count]CTRL-D.
It optionally changes the 'scroll' option from 10 to [count], and then scrolls down that many lines. Pressing CTRL-D again will scroll down that same lines again.
So try entering
V "visual line selection mode
30 "optionally set scroll value to 30
CTRL-D "jump down a screen, repeated as necessary
y " yank your selection
CTRL-U works the same way but scrolls up.
v enters visual block mode, where you can select as if with shift in most common editors, later you can do anything you can normally do with normal commands (substitution :'<,'>s/^/#/ to prepend with a comment, for instance) where '<,'> means the selected visual block instead of all the text.
marks would be the simplest mb where u want to begin and me where u want to end once this is done you can do pretty much anything you want
:'b,'ed
deletes from marker b to marker e
commenting out 40 lines you can do in the visual mode
V40j:s/^/#/
will comment out 40 lines from where u start the sequence