问题
The command J joins lines.
The command gJ joins lines removing spaces
Is there also a command to Join lines adding a separator between the lines?
Example:
Input:
text
other text
more text
text
What I want to do:
- select these 4 lines
- if there are spaces at start and/or EOL remove them
- join lines adding a separator '//' between them
Output:
text//other text//more text//text
回答1:
You can use :substitute for that, matching on \n:
:%s#\s*\n\s*#//#g
However, this appends the separator at the end, too (because the last line in the range also has a newline). You could remove that manually, or specify the c flag and quit the substitution before the last one, or reduce the range by one and :join the last one instead:
:1,$-1s#\s*\n\s*#//#g|join
回答2:
I wrote a plugin "Join", could do what you wanted, and more.
https://github.com/sk1418/Join
Except for all features provided by the build-in :join command, Join can:
Join lines with separator (string)
Join lines with or without trimming the leading/trailing whitespaces
Join lines with negative count (backwards join)
Join lines in reverse
Join lines and keep joined lines (without removing joined lines)
Join lines with any combinations of above options
check the homepage for details and examples/screenshots.
回答3:
There are few ways to do it, but I would recommend going by simplest route possible - recording a macro or doing multi-step command, for example by:
Appending to all lines excluding last by
- Using substitution (
:1,$-1s#$#//#) - Appending (
:1,$-1norm A//)
And then join using visual selection (vGgJ) or by any other method.
Unless you're doing this operation very often you most likely forget any complex commands or existence of specialized plugin in your config, thus my recommendation of using generic, often used sub steps.
回答4:
Another substitution, for the sake of diversity:
:%s:\n\ze.://
回答5:
Will list 50 items per line seperated by spaces:
seq 0 70 | xargs -L 50 | sed 's/ /,/g'
Output:
0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49
50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70
来源：https://stackoverflow.com/questions/25201302/how-to-join-lines-adding-a-separator