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:
As other answers mentioned, (upper case) J and search + replace for \n can be used generally to strip newline characters and to concatenate lines.
But in order to get rid of the trailing newline character in the last line, you need to do this 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
来源：https://stackoverflow.com/questions/3983406/delete-newline-in-vim