0. The website links

https://editorconfig.org/

1. What is? EditorConfig file ？

EditorConfig Help developers in different editors and IDE Define and maintain a consistent coding style between .EditorConfig The project consists of a file format for defining encoding styles and a set of text editor plug-ins , These plug-ins enable the editor to read the file format and follow the defined style .EditorConfig The document is easy to read , And use with version control system .
Different developers , Different editors , There are different coding styles , and EditorConfig It is a tool used to standardize the style and style of code among team developers , and .editorconfig It's its default profile .

2. Sample file

#  tell EditorConfig plug-in unit , This is the root directory , Don't keep looking up 
root = true

#  Match all files 
[*]

#  Set character set 
charset = utf-8

#  End newline , Optional "lf"、"cr"、"crlf"
end_of_line = lf

#  matching .java Final document 
[*.java]

#  Indent style , Optional "space"、"tab"
indent_style = space

#  Number of indented spaces 
indent_size = tab

# tab Width 
tab_width = 4

#  Remove the leading and trailing spaces in a line 
trim_trailing_whitespace = true

#  Insert a new line at the end of the file 
insert_final_newline = false

Reference blog ：

Be curious , In the root directory of the project .editorconfig file