VIM command to insert spaces in after few characters?

问题

gvim command to insert a space or character after every few characters in a file

example: How to add space after every 12 characters in the below lines?

Before adding spaces:

abcdefghijklmnopqrst
dkdkefghijklmnopqrst

After adding spaces

abcdefghijkl mnopqrstvgah
dkdkefghijkl mnopqrstbgdh

回答1:

You can jump to the 12th column by typing 12| so:

:%norm! 12|a<space>

Where space is typed literally

回答2:

A generalized version of this answer fits here perfectly:

:'<,'>s/\(.\{12\}\)/\1 /g
             ^
             |
       substitute this with the number of characters
       after you'd like to insert spaces in

To break it down:

• '<,'> is the range; see :h range
• s is short for substitute; see :h :s
• \( and \) is a regular expression (regex) capturing group (:help \( is not very helpful...)
• . will match any single character
• \{ and \} is a regex match quantifier meaning how many times a preceding pattern should be matched (.\{3\} means ..., and so on)
• \1 is pasting the text captured by the \(-\) block
• space
• /g is to replace all occurences of a pattern in a line (see :h s_flags)

来源：https://stackoverflow.com/questions/59389188/vim-command-to-insert-spaces-in-after-few-characters