Delete newline in Vim

问题:

Is there a way to delete the newline at the end of a line in Vim, so that the next line is appended to the current line?

For example:

Evaluator<T>():
    _bestPos(){
}

I'd like to put this all on one line without copying lines and pasting them into the previous one. It seems like I should be able to put my cursor to the end of each line, press a key, and have the next line jump onto the same one the cursor is on.

End result:

Evaluator<T>(): _bestPos(){ }

Is this possible in Vim?

回答1:

If you are on the first line, pressing (upper case) J will join that line and the next line together, removing the newline. You can also combine this with a count, so pressing 3J will combine all 3 lines together.

回答2:

Certainly. Vim recognizes the \n character as a newline, so you can just search and replace. In command mode type:

:%s/\n/

回答3:

While on the upper line in normal mode, hit Shift+j.

You can prepend a count too, so 3J on the top line would join all those lines together.

回答4:

J deletes extra leading spacing (if any), joining lines with a single space. (With some exceptions: after /[.!?]$/, two spaces may be inserted; before /^\s*)/, no spaces are inserted.)

If you don't want that behavior, gJ simply removes the newline and doesn't do anything clever with spaces at all.

回答5:

In vim:

:set noendofline binary
:w

回答6:

All of the following assume that your cursor is on the first line:

Using normal mappings:

3Shift+J

Using Ex commands:

:,+2j

Which is an abbreviation of

:.,.+2 join

Which can also be entered by the following shortcut:

3:j

An even shorter Ex command:

:j3

回答7:

set backspace=indent,eol,start

in your .vimrc will allow you to use backspace and delete on \n (newline) in insert mode.

set whichwrap+=<,>,h,l,[,]

will allow you to delete the previous LF in normal mode with X (when in col 1).

回答8:

It probably depends on your settings, but I usually do this with A<delete>

Where A is append at the end of the line. It probably requires nocompatible mode :)

回答9:

<CURSOR>Evaluator<T>():
    _bestPos(){
}

cursor in first line

NOW, in NORMAL MODE do

shift+v
2j
shift+j

or

V2jJ

:normal V2jJ

回答10:

I would just press A (append to end of line, puts you into insert mode) on the line where you want to remove the newline and then press delete.

回答11:

if you don't mind using other shell tools,

tr -d "\n" < file >t && mv -f t file

sed -i.bak -e :a -e 'N;s/\n//;ba' file

awk '{printf "%s",$0 }' file >t && mv -f t file

回答12:

The problem is that multiples char 0A (\n) that are invisible may accumulate. Supose you want to clean up from line 100 to the end:

Typing ESC and : (terminal commander)

:110,$s/^\n//

In a vim script:

execute '110,$s/^\n//'

Explanation: from 110 till the end search for lines that start with new line (are blank) and remove them