I would like to take a stab at this probably later tonight. I guess this should be manually created to be "simple" and not generated by any tool (i.e. IntelliCode)?
@gojanpaolo yes, a simple set of rules to start off with is easier for us to review and discuss
Here is what Intellicode infers as a reference:
[*.cs]
#Core editorconfig formatting - indentation
#use soft tabs (spaces) for indentation
indent_style = space
#Formatting - indentation options
#indent switch case contents.
csharp_indent_case_contents = true
#indent switch labels
csharp_indent_switch_labels = true
#Formatting - new line options
#place catch statements on a new line
csharp_new_line_before_catch = true
#place else statements on a new line
csharp_new_line_before_else = true
#require finally statements to be on a new line after the closing brace
csharp_new_line_before_finally = true
#require braces to be on a new line for methods, properties, object_collection_array_initializers, types, control_blocks, and lambdas (also known as "Allman" style)
csharp_new_line_before_open_brace = methods, properties, object_collection_array_initializers, types, control_blocks, lambdas
#Formatting - organize using options
#sort System.* using directives alphabetically, and place them before other usings
dotnet_sort_system_directives_first = true
#Formatting - spacing options
#require NO space between a cast and the value
csharp_space_after_cast = false
#require a space before the colon for bases or interfaces in a type declaration
csharp_space_after_colon_in_inheritance_clause = true
#require a space after a keyword in a control flow statement such as a for loop
csharp_space_after_keywords_in_control_flow_statements = true
#require a space before the colon for bases or interfaces in a type declaration
csharp_space_before_colon_in_inheritance_clause = true
#remove space within empty argument list parentheses
csharp_space_between_method_call_empty_parameter_list_parentheses = false
#remove space between method call name and opening parenthesis
csharp_space_between_method_call_name_and_opening_parenthesis = false
#do not place space characters after the opening parenthesis and before the closing parenthesis of a method call
csharp_space_between_method_call_parameter_list_parentheses = false
#remove space within empty parameter list parentheses for a method declaration
csharp_space_between_method_declaration_empty_parameter_list_parentheses = false
#place a space character after the opening parenthesis and before the closing parenthesis of a method declaration parameter list.
csharp_space_between_method_declaration_parameter_list_parentheses = false
#Formatting - wrapping options
#leave code block on single line
csharp_preserve_single_line_blocks = true
#Style - expression bodied member options
#prefer block bodies for accessors
csharp_style_expression_bodied_accessors = false:suggestion
#prefer block bodies for constructors
csharp_style_expression_bodied_constructors = false:suggestion
#prefer block bodies for methods
csharp_style_expression_bodied_methods = false:suggestion
#prefer block bodies for properties
csharp_style_expression_bodied_properties = false:suggestion
#Style - expression level options
#prefer out variables to be declared before the method call
csharp_style_inlined_variable_declaration = false:suggestion
#prefer the type name for member access expressions, instead of the language keyword
dotnet_style_predefined_type_for_member_access = false:suggestion
#Style - implicit and explicit types
#prefer var is used to declare variables with built-in system types such as int
csharp_style_var_for_built_in_types = true:suggestion
#prefer var when the type is already mentioned on the right-hand side of a declaration expression
csharp_style_var_when_type_is_apparent = true:suggestion
#Style - language keyword and framework type options
#prefer the language keyword for local variables, method parameters, and class members, instead of the type name, for types that have a keyword to represent them
dotnet_style_predefined_type_for_locals_parameters_members = true:suggestion
#Style - qualification options
#prefer events not to be prefaced with this. or Me. in Visual Basic
dotnet_style_qualification_for_event = false:suggestion
#prefer fields not to be prefaced with this. or Me. in Visual Basic
dotnet_style_qualification_for_field = false:suggestion
#prefer methods not to be prefaced with this. or Me. in Visual Basic
dotnet_style_qualification_for_method = false:suggestion
#prefer properties not to be prefaced with this. or Me. in Visual Basic
dotnet_style_qualification_for_property = false:suggestion
The only issue I have with Intellicode, is that it cannot infers the proper value of csharp_new_line_before_open_brace especially when it's supposed to be all
Sections for cpp and other file formats should also be included https://github.com/dotnet/corefx/blob/master/.editorconfig#L136
Most helpful comment
Sections for cpp and other file formats should also be included https://github.com/dotnet/corefx/blob/master/.editorconfig#L136