My (template) EditorConfig file

.editorconfig

# EditorConfig is awesome: https://EditorConfig.org

# Top-most EditorConfig file
root = true

# Unix-style newlines with a newline ending every file
[*]
charset = utf-8
end_of_line = lf
insert_final_newline = true
indent_style = space
trim_trailing_whitespace = true

# Python specific setting
[*.py]
indent_size = 4
max_line_length = 120

# YAML files, often used for configuration
[*.yml]
indent_size = 2

# Markdown files have unique whitespace handling
[*.md]
trim_trailing_whitespace = false

# Bash script specific settings
[*.sh]
indent_size = 2

# SQL files
[*.sql]
indent_size = 2

# C/C++ files
[{*.c,*.cpp,*.h,*.hpp}]
indent_size = 2
indent_style = space
max_line_length = 120
trim_trailing_whitespace = true