whitespace:ws      = [ \b\f\r\t\v];
comment-line:alias = "#" [^\n]*;
key:nows           = [a-zA-Z_][a-zA-Z_0-9\-]*;
quoted:nows        = "\"" ([^\\"] | "\\" .)* "\"";
value-chars:nows   = ([^\\"\n=# \b\f\r\t\v] | "\\" .)*;
value              = value-chars | quoted;
key-val            = key ("=" value)? comment-line?;
doc:root           = "\n"* (key-val | comment-line) ("\n"+ (key-val | comment-line))* "\n"*;