anchor.diff:  = Command Parsing
   
  -Kakoune commands, either loaded from a script, or written in the command
  -prompt are parsed according to the following rules:
  +Kakoune commands, either loaded from a script or written in the command prompt, are parsed according to the following rules:
   
   == Basic parsing
   
  -- Commands are separated by `;` or end of lines
  +- Commands are delimited by a `;` or an end of line
   
  -- Words (command names and parameters) are separated by whitespaces
  +- Words (command names and parameters) are delimited by whitespaces
   
   == Quoted Strings
   
  -If a word starts with `'`, `"` or `%X` with `X` a non nestable
  -punctuation character it is parsed as a quoted string whose delimiter is,
  -respectively, `'`, `"` or `X`.
  +If a word starts with `'`, `"`, or `%X` with `X` a non-nestable punctuation character (see below for nestable characters),
  +it is parsed as a quoted string whose delimiter is, respectively, `'`, `"`, or `X`.
   
  -A quoted string contains every character (including whitespaces) until
  -its closing delimiter. If its closing delimiter is doubled, then it is
  -considered to be part of the string content as a single delimiter.
  +A quoted string contains every character (including whitespaces).  Doubling a closing delimiter escapes it.
  +Thus, for example, entering two closing delimiting characters at the end of a quoted string will render one of the characters literally;
  +that is, it will be considered as part of the quoted string's content.
   
  -Inside double quotes, `%`-strings are processed unless the `%` is escaped by
  -doubling it. Double quotes inside these nested strings must still be escaped.
  +Inside double quotes, `%`-strings are processed unless the `%` is escaped by doubling it.
  +Double quotes inside these nested strings must still be escaped.
   
   No other escaping takes place in quoted strings.
   
  
positive.code: 
  == Balanced Strings
  
  If a word starts with `%X` with `X` a nestable punctuation character (one
  of `(`, `[`, `{` and `<`), it is parsed as a balanced string whose closing
  delimiter is the matching character of its opening delimiter (respectively
  `)`, `]`, `}` and `>`).
  
  A balanced string contains every character (including whitespaces) until
  a closing delimiter is found, and opening and closing delimiters are
  balanced inside the string (each opening delimiter appearing inside the
  string have been closed by a matching closing delimiter).
  
  No other escaping takes place in balanced strings.
  
  === Balanced Strings Examples
  
  
negative.code: 
  == Non Quoted words
  
  Other words are non-quoted.
  Non-quoted words end either at a whitespace or a `;`.
  
  If they start with a `\` followed by a `%`, `'`, or `"`,
  then that leading `\` escapes those characters and is discarded.
  
  If a whitespace or `;` is preceded by a `\`,
  then the `\` is discarded, and the whitespace or `;` becomes part of the word.
  Any other `\` is treated as a literal `\`.
  
  == Typed Expansions
  
  Quoted and Balanced strings starting with `%` might have an optional alphabetic *expansion type* between the `%` and their delimiter
  (which is always a punctuation character).
  This *expansion type* defines how the string's content is going to be expanded.
  Rules for expanding and escaping expansion types are the same as for `%`-strings.
  
  - If the *expansion type* is empty, the string content is used verbatim.
  
  