mirror of
https://github.com/mawww/kakoune.git
synced 2024-11-24 16:15:38 +03:00
78 lines
2.5 KiB
Plaintext
78 lines
2.5 KiB
Plaintext
= Command Parsing
|
|
|
|
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
|
|
|
|
- Words (command names and parameters) are separated 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`.
|
|
|
|
A quoted string contains every characters (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.
|
|
|
|
No other escaping takes place in quoted strings.
|
|
|
|
=== Quoted Strings Examples
|
|
|
|
- `'foo'` contents is *foo*
|
|
|
|
- `'foo''bar'` is a single word whose content is *foo'bar*
|
|
|
|
- `"baz"""` is a single word whose content is *baz"*.
|
|
|
|
== 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
|
|
|
|
- `%{foo}` contents is *foo*
|
|
|
|
- `%{foo\{bar}}` contents is *foo\{bar}*
|
|
|
|
== Non Quoted words
|
|
|
|
Other words are non-quoted. Non-quoted words end either on a whitespaces
|
|
or a `;`.
|
|
|
|
If they start with `\\` followed by `%`, `'` or `"`, then that leading
|
|
`\\` is discarded.
|
|
|
|
If a whitespace or `;` is preceeded by `\\`, 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 startings 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 content is going to be expanded.
|
|
|
|
- If the *expansion type* is empty, the string content is used verbatim.
|
|
|
|
- If the *expansion type* is one of `sh`, `reg`, `opt`, `val` or `arg`,
|
|
The string is expanded according as described in
|
|
<<expansions#typed-expansions,`:doc expansion typed-expansions`>>
|
|
|
|
- For any other *expansion type* a parsing error is raised.
|