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-rw-r--r--book/src/usage.md13
1 files changed, 10 insertions, 3 deletions
diff --git a/book/src/usage.md b/book/src/usage.md
index 2de8d01a..d31e03a1 100644
--- a/book/src/usage.md
+++ b/book/src/usage.md
@@ -51,9 +51,10 @@ Multiple characters are currently not supported, but planned.
## Textobjects
-Currently supported: `word`, `surround`.
+Currently supported: `word`, `surround`, `function`, `class`, `parameter`.
![textobject-demo](https://user-images.githubusercontent.com/23398472/124231131-81a4bb00-db2d-11eb-9d10-8e577ca7b177.gif)
+![textobject-treesitter-demo](https://user-images.githubusercontent.com/23398472/132537398-2a2e0a54-582b-44ab-a77f-eb818942203d.gif)
- `ma` - Select around the object (`va` in vim, `<alt-a>` in kakoune)
- `mi` - Select inside the object (`vi` in vim, `<alt-i>` in kakoune)
@@ -62,5 +63,11 @@ Currently supported: `word`, `surround`.
| --- | --- |
| `w` | Word |
| `(`, `[`, `'`, etc | Specified surround pairs |
-
-Textobjects based on treesitter, like `function`, `class`, etc are planned.
+| `f` | Function |
+| `c` | Class |
+| `p` | Parameter |
+
+Note: `f`, `c`, etc need a tree-sitter grammar active for the current
+document and a special tree-sitter query file to work properly. [Only
+some grammars](https://github.com/search?q=repo%3Ahelix-editor%2Fhelix+filename%3Atextobjects.scm&type=Code&ref=advsearch&l=&l=)
+currently have the query file implemented. Contributions are welcome !