Vimdiff current line compare - vim

In Beyond Compare, the line you currently have selected is compared on top of each other at the bottom of the window. Is there any way to accomplish this in vimdiff?

Short answer No.
Vim does not have a built in way to do that. You would have to write a plugin that would split two more windows on the bottom, re-size them to 1 line. I tried doing it manually but it didn't keep one of the windows in sync while scrolling.
My work around is to use CTRL-W J to move the window to the bottom and then CTRL-W L to bring it back to side by side comparison.
see help: window-moving for details

Related

Vim: Only scroll the current line

I would like vim to scroll horizontally like nano does, by scrolling only the current line, not the whole screen.
I tried playing with nowrap and scrolloff settings, without success.
Here are some screenshots (with the cursor at the end of a long line) to explain myself.
Nano:
Vim (wrap):
Vim (nowrap):
Thanks!
No, Vim cannot do this, and I think it would be hard to implement this in a way that isn't inconsistent or confusing to the user. There would need to be an indicator (like with side scrolling) that only the current line is scrolled. Also in Vim, there are several commands (like j / k and i_CTRL-Y / i_CTRL-E) that refer to the same column in above / below lines. A partially scrolled view state would make it difficult to use those.
That said, you can sort-of achieve this with a hack: The foldtext of folded lines does not scroll horizontally. So if you fold each individual line (other than the current one) via a custom 'foldexpr', set the fold text to be the line's text, and automatically close all surrounding folds, you'll get this. However, as you'll lose syntax highlighting and "normal" folding, this is more for demonstration than an actual solution.

Vim to always only jump one row at a time [duplicate]

I can get the bottom of the window to display partial lines by setting display=lastline
Is there a similar option that would allow partial lines to be displayed at the top of a window?
Without this functionality, my vim still scrolls (down) by more than 1 screen line when the topmost file line being displayed is wrapped into multiple screen lines.
For example, in the following scenario, when I press C-E, my vim will scroll down by 3 screen lines. Is there a way to make it scroll by only 1 screen line such that only the first two words in line 1 are hidden, but the following 3 words are still displayed? This will be very useful for editing long paragraphs of text.
Note: I'm referring to the scrolling of the entire screen, not the movement of cursor.
------------------
1 abcdefg abcefg
abcasdfsa sdfsf
sdfc
2 adfadf
3 adfadf
4 adfadf
------------------
I don't think it is possible to do exactly what you want.
Here's the description I get when I type :help CTRL-E
CTRL-E
CTRL-E Scroll windows [count] lines downwards in the buffer.
Mnemonic: Extra lines.
Note that while it says it is scrolling the window, it also mentions that it is scrolling lines in the buffer. You really are scrolling only one (wrapped) line at a time.
I don't think there's another way around this.
I can get the bottom of the window to display partial lines by setting display=lastline
I think display=lastline is a false solution - you still scroll the same amount, you just have more visible.
The real way to solve this is to disable wrapping:
:set nowrap
Edit
Some related threads that show that a "scrolling via screen lines" feature is under consideration, but will take a while to be implemented:
http://vim.1045645.n5.nabble.com/Feature-request-Display-partial-paragraph-at-the-top-of-the-window-td1166809.html (4 years ago)
http://vim.1045645.n5.nabble.com/Scrolling-screen-lines-I-knew-it-s-impossible-td3358342.html (the beginning of this year. Same dev mentioned wanting to implement it: "Ben Schmidt")
For anyone reading this thread:
This thread on the Vi stackexchange offers a slightly hacky (but useable) solution to visual scrolling across wrapped lines.
Now there's a built-in option for this:
'smoothscroll' 'sms' boolean (default off)
local to window
Scrolling works with screen lines. When 'wrap' is set and the first
line in the window wraps part of it may not be visible, as if it is
above the window. "<<<" is displayed at the start of the first line,
highlighted with hl-NonText.
NOTE: only partly implemented, currently works with CTRL-E, CTRL-Y
and scrolling with the mouse.

Changing the size of the split screen in vimdiff

I only know two commands for dealing with vimdiff:
Ctrl-w Ctrl-w switches windows and Ctrl-w = makes the two windows equal width if they became uneven due to, for example, resizing the terminal.
How can I make the left screen much larger than the right, for instance?
You can use any windowing command in vimdiff, for example CTRL-w < to make the left window one column smaller. This can also be combined with a count, for example CTRL-W 5> to make the right window 5 columns smaller. Consult the help page with :help CTRL-w to get a list of window commands.
Additionally, you can use the mouse to change the size of the windows by clicking the boundary between both windows and dragging it into a direction. You might have to enable mouse support by issuing :set mouse=a first.

In vim, how to scroll, continuously, by screen lines when wrapping is enabled?

I can get the bottom of the window to display partial lines by setting display=lastline
Is there a similar option that would allow partial lines to be displayed at the top of a window?
Without this functionality, my vim still scrolls (down) by more than 1 screen line when the topmost file line being displayed is wrapped into multiple screen lines.
For example, in the following scenario, when I press C-E, my vim will scroll down by 3 screen lines. Is there a way to make it scroll by only 1 screen line such that only the first two words in line 1 are hidden, but the following 3 words are still displayed? This will be very useful for editing long paragraphs of text.
Note: I'm referring to the scrolling of the entire screen, not the movement of cursor.
------------------
1 abcdefg abcefg
abcasdfsa sdfsf
sdfc
2 adfadf
3 adfadf
4 adfadf
------------------
I don't think it is possible to do exactly what you want.
Here's the description I get when I type :help CTRL-E
CTRL-E
CTRL-E Scroll windows [count] lines downwards in the buffer.
Mnemonic: Extra lines.
Note that while it says it is scrolling the window, it also mentions that it is scrolling lines in the buffer. You really are scrolling only one (wrapped) line at a time.
I don't think there's another way around this.
I can get the bottom of the window to display partial lines by setting display=lastline
I think display=lastline is a false solution - you still scroll the same amount, you just have more visible.
The real way to solve this is to disable wrapping:
:set nowrap
Edit
Some related threads that show that a "scrolling via screen lines" feature is under consideration, but will take a while to be implemented:
http://vim.1045645.n5.nabble.com/Feature-request-Display-partial-paragraph-at-the-top-of-the-window-td1166809.html (4 years ago)
http://vim.1045645.n5.nabble.com/Scrolling-screen-lines-I-knew-it-s-impossible-td3358342.html (the beginning of this year. Same dev mentioned wanting to implement it: "Ben Schmidt")
For anyone reading this thread:
This thread on the Vi stackexchange offers a slightly hacky (but useable) solution to visual scrolling across wrapped lines.
Now there's a built-in option for this:
'smoothscroll' 'sms' boolean (default off)
local to window
Scrolling works with screen lines. When 'wrap' is set and the first
line in the window wraps part of it may not be visible, as if it is
above the window. "<<<" is displayed at the start of the first line,
highlighted with hl-NonText.
NOTE: only partly implemented, currently works with CTRL-E, CTRL-Y
and scrolling with the mouse.

How can I add non mouse-selectable line numbers to vim? [duplicate]

This question already has answers here:
How to clear the line number in Vim when copying?
(12 answers)
Closed 6 years ago.
So I've figured out how to add line numbers to vim (:set no or :set number) but how can I make it so that when I use my mouse in a terminal emulator to select a block of lines, it does not also select the numbers?
For example, say I have three lines that look like so in vim:
1 First line
2 Second
3 Third
If I want to select the three lines with the mouse what I want is for it to ONLY select the actual text. But what ends up happening is it selects the line numbers as well as all the space to the left and right of the line numbers.
Is there any way to change this behavior? BTW, I'm using the gnome terminal editor in gnome if that makes a difference.
Use the following:
:set mouse=a
to turn on xterm style mousing in all modes. This will allow you to do what you want. Keep in mind if the vim is remote via ssh, you'll need X11 forwarding turned on for the selection to make it to your local clipboard.
AFAIK, that is not possible.
The only thing I can add at the moment is that you'd be better off with
:set invnumber
It will inverse the current condition, so you can map it to a key, and toggle it. That way you don't have to remember two commands.
I agree with the first answer. If you use gvim, you can experiment with using set mouse=n and set mouse=a, which should change the line number selecting behavior.
When I want to select text into a terminal, I remove line numbers.
:set nonu
When I finished
:set nu
You're probably not on a Macintosh, and I can't tell if you mean you want to use system copy rather than vim's yank.
But if you are both those things, you can use option-drag to select text. This creates a 2d box over the text, selecting things that are under it. It should be functionally the same as 'take columns x1 to x2 of rows y1 to y2'.
I'm pretty sure this is not possible in terminal-vim. There is no accepted standard (e.g. a TTY escape) for indicating blocks of characters that aren't highlightable by mouse, as far as I know.
I would use gvim if you want to be able to do this at any cost. Its behavior is as you describe.
My recommendation is to get used to the little box on the right hand corner of the screen which has the current line's number and character position information. Before I used vim I could never imagine living without line numbers, but since then I've moved beyond this. Not having line numbers clutter up the screen allows for distraction free code viewing, and do you really need to know that the line number above your current active line is one less than your current line's number, and the line below is one more?
A copy without mouse:
Enter Visual mode: Position your cursor, press v (For complete line V) move up or down until desired position
Press control + c to copy into clipboard (if +clipboard exists in :ve command output) press ESC and paste it wherever you want with control + v.
Or press y to yank into register and press p to put the text after the cursor

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