Add textobjects queries (#20924)

Co-Authored-By: Max <max@zed.dev>

Release Notes:

- vim: Added motions `[[`, `[]`, `]]`, `][` for navigating by section,
`[m`, `]m`, `[M`, `]M` for navigating by method, and `[*`, `]*`, `[/`,
`]/` for comments. These currently only work for languages built in to
Zed, as they are powered by new tree-sitter queries.
- vim: Added new text objects: `ic`, `ac` for inside/around classes,
`if`,`af` for functions/methods, and `g c` for comments. These currently
only work for languages built in to Zed, as they are powered by new
tree-sitter queries.

---------

Co-authored-by: Max <max@zed.dev>

Cargo.lock

@@ -3416,9 +3416,9 @@ dependencies = [
 
 [[package]]
 name = "ctor"
-version = "0.2.9"
+version = "0.2.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "32a2785755761f3ddc1492979ce1e48d2c00d09311c39e4466429188f3dd6501"
+checksum = "edb49164822f3ee45b17acd4a208cfc1251410cf0cad9a833234c9890774dd9f"
 dependencies = [
  "quote",
  "syn 2.0.87",
@@ -6789,9 +6789,9 @@ checksum = "03087c2bad5e1034e8cace5926dec053fb3790248370865f5117a7d0213354c8"
 
 [[package]]
 name = "libc"
-version = "0.2.164"
+version = "0.2.162"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "433bfe06b8c75da9b2e3fbea6e5329ff87748f0b144ef75306e674c3f6f7c13f"
+checksum = "18d287de67fe55fd7e1581fe933d965a5a9477b38e949cfa9f8574ef01506398"
 
 [[package]]
 name = "libdbus-sys"
@@ -10956,9 +10956,9 @@ dependencies = [
 
 [[package]]
 name = "serde_json"
-version = "1.0.133"
+version = "1.0.132"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c7fceb2473b9166b2294ef05efcb65a3db80803f0b03ef86a5fc88a2b85ee377"
+checksum = "d726bfaff4b320266d395898905d0eba0345aae23b54aee3a737e260fd46db03"
 dependencies = [
  "indexmap 2.6.0",
  "itoa",

assets/keymaps/vim.json

@@ -33,6 +33,18 @@
       "(": "vim::SentenceBackward",
       ")": "vim::SentenceForward",
       "|": "vim::GoToColumn",
+      "] ]": "vim::NextSectionStart",
+      "] [": "vim::NextSectionEnd",
+      "[ [": "vim::PreviousSectionStart",
+      "[ ]": "vim::PreviousSectionEnd",
+      "] m": "vim::NextMethodStart",
+      "] M": "vim::NextMethodEnd",
+      "[ m": "vim::PreviousMethodStart",
+      "[ M": "vim::PreviousMethodEnd",
+      "[ *": "vim::PreviousComment",
+      "[ /": "vim::PreviousComment",
+      "] *": "vim::NextComment",
+      "] /": "vim::NextComment",
       // Word motions
       "w": "vim::NextWordStart",
       "e": "vim::NextWordEnd",
@@ -360,7 +372,8 @@
     "bindings": {
       "escape": "vim::ClearOperators",
       "ctrl-c": "vim::ClearOperators",
-      "ctrl-[": "vim::ClearOperators"
+      "ctrl-[": "vim::ClearOperators",
+      "g c": "vim::Comment"
     }
   },
   {
@@ -389,7 +402,9 @@
       ">": "vim::AngleBrackets",
       "a": "vim::Argument",
       "i": "vim::IndentObj",
-      "shift-i": ["vim::IndentObj", { "includeBelow": true }]
+      "shift-i": ["vim::IndentObj", { "includeBelow": true }],
+      "f": "vim::Method",
+      "c": "vim::Class"
     }
   },
   {

crates/language/src/buffer.rs

@@ -14,7 +14,8 @@ use crate::{
         SyntaxMapMatches, SyntaxSnapshot, ToTreeSitterPoint,
     },
     task_context::RunnableRange,
-    LanguageScope, Outline, OutlineConfig, RunnableCapture, RunnableTag,
+    LanguageScope, Outline, OutlineConfig, RunnableCapture, RunnableTag, TextObject,
+    TreeSitterOptions,
 };
 use anyhow::{anyhow, Context, Result};
 use async_watch as watch;
@@ -3412,6 +3413,72 @@ impl BufferSnapshot {
         })
     }
 
+    pub fn text_object_ranges<T: ToOffset>(
+        &self,
+        range: Range<T>,
+        options: TreeSitterOptions,
+    ) -> impl Iterator<Item = (Range<usize>, TextObject)> + '_ {
+        let range = range.start.to_offset(self).saturating_sub(1)
+            ..self.len().min(range.end.to_offset(self) + 1);
+
+        let mut matches =
+            self.syntax
+                .matches_with_options(range.clone(), &self.text, options, |grammar| {
+                    grammar.text_object_config.as_ref().map(|c| &c.query)
+                });
+
+        let configs = matches
+            .grammars()
+            .iter()
+            .map(|grammar| grammar.text_object_config.as_ref())
+            .collect::<Vec<_>>();
+
+        let mut captures = Vec::<(Range<usize>, TextObject)>::new();
+
+        iter::from_fn(move || loop {
+            while let Some(capture) = captures.pop() {
+                if capture.0.overlaps(&range) {
+                    return Some(capture);
+                }
+            }
+
+            let mat = matches.peek()?;
+
+            let Some(config) = configs[mat.grammar_index].as_ref() else {
+                matches.advance();
+                continue;
+            };
+
+            for capture in mat.captures {
+                let Some(ix) = config
+                    .text_objects_by_capture_ix
+                    .binary_search_by_key(&capture.index, |e| e.0)
+                    .ok()
+                else {
+                    continue;
+                };
+                let text_object = config.text_objects_by_capture_ix[ix].1;
+                let byte_range = capture.node.byte_range();
+
+                let mut found = false;
+                for (range, existing) in captures.iter_mut() {
+                    if existing == &text_object {
+                        range.start = range.start.min(byte_range.start);
+                        range.end = range.end.max(byte_range.end);
+                        found = true;
+                        break;
+                    }
+                }
+
+                if !found {
+                    captures.push((byte_range, text_object));
+                }
+            }
+
+            matches.advance();
+        })
+    }
+
     /// Returns enclosing bracket ranges containing the given range
     pub fn enclosing_bracket_ranges<T: ToOffset>(
         &self,

crates/language/src/buffer_tests.rs

@@ -20,6 +20,7 @@ use std::{
     sync::LazyLock,
     time::{Duration, Instant},
 };
+use syntax_map::TreeSitterOptions;
 use text::network::Network;
 use text::{BufferId, LineEnding, LineIndent};
 use text::{Point, ToPoint};
@@ -915,6 +916,39 @@ async fn test_symbols_containing(cx: &mut gpui::TestAppContext) {
     }
 }
 
+#[gpui::test]
+fn test_text_objects(cx: &mut AppContext) {
+    let (text, ranges) = marked_text_ranges(
+        indoc! {r#"
+            impl Hello {
+                fn say() -> u8 { return /* ˇhi */ 1 }
+            }"#
+        },
+        false,
+    );
+
+    let buffer =
+        cx.new_model(|cx| Buffer::local(text.clone(), cx).with_language(Arc::new(rust_lang()), cx));
+    let snapshot = buffer.update(cx, |buffer, _| buffer.snapshot());
+
+    let matches = snapshot
+        .text_object_ranges(ranges[0].clone(), TreeSitterOptions::default())
+        .map(|(range, text_object)| (&text[range], text_object))
+        .collect::<Vec<_>>();
+
+    assert_eq!(
+        matches,
+        &[
+            ("/* hi */", TextObject::AroundComment),
+            ("return /* hi */ 1", TextObject::InsideFunction),
+            (
+                "fn say() -> u8 { return /* hi */ 1 }",
+                TextObject::AroundFunction
+            ),
+        ],
+    )
+}
+
 #[gpui::test]
 fn test_enclosing_bracket_ranges(cx: &mut AppContext) {
     let mut assert = |selection_text, range_markers| {
@@ -3182,6 +3216,20 @@ fn rust_lang() -> Language {
         "#,
     )
     .unwrap()
+    .with_text_object_query(
+        r#"
+        (function_item
+            body: (_
+                "{"
+                (_)* @function.inside
+                "}" )) @function.around
+
+        (line_comment)+ @comment.around
+
+        (block_comment) @comment.around
+        "#,
+    )
+    .unwrap()
     .with_outline_query(
         r#"
         (line_comment) @annotation

crates/language/src/language.rs

@@ -78,7 +78,7 @@ pub use language_registry::{
 };
 pub use lsp::LanguageServerId;
 pub use outline::*;
-pub use syntax_map::{OwnedSyntaxLayer, SyntaxLayer};
+pub use syntax_map::{OwnedSyntaxLayer, SyntaxLayer, TreeSitterOptions};
 pub use text::{AnchorRangeExt, LineEnding};
 pub use tree_sitter::{Node, Parser, Tree, TreeCursor};
 
@@ -848,6 +848,7 @@ pub struct Grammar {
     pub(crate) runnable_config: Option<RunnableConfig>,
     pub(crate) indents_config: Option<IndentConfig>,
     pub outline_config: Option<OutlineConfig>,
+    pub text_object_config: Option<TextObjectConfig>,
     pub embedding_config: Option<EmbeddingConfig>,
     pub(crate) injection_config: Option<InjectionConfig>,
     pub(crate) override_config: Option<OverrideConfig>,
@@ -873,6 +874,44 @@ pub struct OutlineConfig {
     pub annotation_capture_ix: Option<u32>,
 }
 
+#[derive(Debug, Clone, Copy, PartialEq)]
+pub enum TextObject {
+    InsideFunction,
+    AroundFunction,
+    InsideClass,
+    AroundClass,
+    InsideComment,
+    AroundComment,
+}
+
+impl TextObject {
+    pub fn from_capture_name(name: &str) -> Option<TextObject> {
+        match name {
+            "function.inside" => Some(TextObject::InsideFunction),
+            "function.around" => Some(TextObject::AroundFunction),
+            "class.inside" => Some(TextObject::InsideClass),
+            "class.around" => Some(TextObject::AroundClass),
+            "comment.inside" => Some(TextObject::InsideComment),
+            "comment.around" => Some(TextObject::AroundComment),
+            _ => None,
+        }
+    }
+
+    pub fn around(&self) -> Option<Self> {
+        match self {
+            TextObject::InsideFunction => Some(TextObject::AroundFunction),
+            TextObject::InsideClass => Some(TextObject::AroundClass),
+            TextObject::InsideComment => Some(TextObject::AroundComment),
+            _ => None,
+        }
+    }
+}
+
+pub struct TextObjectConfig {
+    pub query: Query,
+    pub text_objects_by_capture_ix: Vec<(u32, TextObject)>,
+}
+
 #[derive(Debug)]
 pub struct EmbeddingConfig {
     pub query: Query,
@@ -950,6 +989,7 @@ impl Language {
                     highlights_query: None,
                     brackets_config: None,
                     outline_config: None,
+                    text_object_config: None,
                     embedding_config: None,
                     indents_config: None,
                     injection_config: None,
@@ -1020,7 +1060,12 @@ impl Language {
         if let Some(query) = queries.runnables {
             self = self
                 .with_runnable_query(query.as_ref())
-                .context("Error loading tests query")?;
+                .context("Error loading runnables query")?;
+        }
+        if let Some(query) = queries.text_objects {
+            self = self
+                .with_text_object_query(query.as_ref())
+                .context("Error loading textobject query")?;
         }
         Ok(self)
     }
@@ -1097,6 +1142,26 @@ impl Language {
         Ok(self)
     }
 
+    pub fn with_text_object_query(mut self, source: &str) -> Result<Self> {
+        let grammar = self
+            .grammar_mut()
+            .ok_or_else(|| anyhow!("cannot mutate grammar"))?;
+        let query = Query::new(&grammar.ts_language, source)?;
+
+        let mut text_objects_by_capture_ix = Vec::new();
+        for (ix, name) in query.capture_names().iter().enumerate() {
+            if let Some(text_object) = TextObject::from_capture_name(name) {
+                text_objects_by_capture_ix.push((ix as u32, text_object));
+            }
+        }
+
+        grammar.text_object_config = Some(TextObjectConfig {
+            query,
+            text_objects_by_capture_ix,
+        });
+        Ok(self)
+    }
+
     pub fn with_embedding_query(mut self, source: &str) -> Result<Self> {
         let grammar = self
             .grammar_mut()

crates/language/src/language_registry.rs

@@ -181,6 +181,7 @@ pub const QUERY_FILENAME_PREFIXES: &[(
     ("overrides", |q| &mut q.overrides),
     ("redactions", |q| &mut q.redactions),
     ("runnables", |q| &mut q.runnables),
+    ("textobjects", |q| &mut q.text_objects),
 ];
 
 /// Tree-sitter language queries for a given language.
@@ -195,6 +196,7 @@ pub struct LanguageQueries {
     pub overrides: Option<Cow<'static, str>>,
     pub redactions: Option<Cow<'static, str>>,
     pub runnables: Option<Cow<'static, str>>,
+    pub text_objects: Option<Cow<'static, str>>,
 }
 
 #[derive(Clone, Default)]

crates/language/src/syntax_map.rs

@@ -814,6 +814,23 @@ impl SyntaxSnapshot {
             buffer.as_rope(),
             self.layers_for_range(range, buffer, true),
             query,
+            TreeSitterOptions::default(),
+        )
+    }
+
+    pub fn matches_with_options<'a>(
+        &'a self,
+        range: Range<usize>,
+        buffer: &'a BufferSnapshot,
+        options: TreeSitterOptions,
+        query: fn(&Grammar) -> Option<&Query>,
+    ) -> SyntaxMapMatches<'a> {
+        SyntaxMapMatches::new(
+            range.clone(),
+            buffer.as_rope(),
+            self.layers_for_range(range, buffer, true),
+            query,
+            options,
         )
     }
 
@@ -1001,12 +1018,25 @@ impl<'a> SyntaxMapCaptures<'a> {
     }
 }
 
+#[derive(Default)]
+pub struct TreeSitterOptions {
+    max_start_depth: Option<u32>,
+}
+impl TreeSitterOptions {
+    pub fn max_start_depth(max_start_depth: u32) -> Self {
+        Self {
+            max_start_depth: Some(max_start_depth),
+        }
+    }
+}
+
 impl<'a> SyntaxMapMatches<'a> {
     fn new(
         range: Range<usize>,
         text: &'a Rope,
         layers: impl Iterator<Item = SyntaxLayer<'a>>,
         query: fn(&Grammar) -> Option<&Query>,
+        options: TreeSitterOptions,
     ) -> Self {
         let mut result = Self::default();
         for layer in layers {
@@ -1027,6 +1057,7 @@ impl<'a> SyntaxMapMatches<'a> {
                     query_cursor.deref_mut(),
                 )
             };
+            cursor.set_max_start_depth(options.max_start_depth);
 
             cursor.set_byte_range(range.clone());
             let matches = cursor.matches(query, layer.node(), TextProvider(text));

crates/languages/src/bash/textobjects.scm

@@ -0,0 +1,7 @@
+(function_definition
+  body: (_
+    "{"
+    (_)* @function.inside
+    "}" )) @function.around
+
+(comment) @comment.around

crates/languages/src/c/textobjects.scm

@@ -0,0 +1,25 @@
+(declaration
+    declarator: (function_declarator)) @function.around
+
+(function_definition
+    body: (_
+        "{"
+        (_)* @function.inside
+        "}" )) @function.around
+
+(preproc_function_def
+    value: (_) @function.inside) @function.around
+
+(comment) @comment.around
+
+(struct_specifier
+    body: (_
+        "{"
+        (_)* @class.inside
+        "}")) @class.around
+
+(enum_specifier
+    body: (_
+        "{"
+        [(_) ","?]* @class.inside
+        "}")) @class.around

crates/languages/src/cpp/textobjects.scm

@@ -0,0 +1,31 @@
+(declaration
+    declarator: (function_declarator)) @function.around
+
+(function_definition
+    body: (_
+        "{"
+        (_)* @function.inside
+        "}" )) @function.around
+
+(preproc_function_def
+    value: (_) @function.inside) @function.around
+
+(comment) @comment.around
+
+(struct_specifier
+    body: (_
+        "{"
+        (_)* @class.inside
+        "}")) @class.around
+
+(enum_specifier
+    body: (_
+        "{"
+        [(_) ","?]* @class.inside
+        "}")) @class.around
+
+(class_specifier
+  body: (_
+      "{"
+      [(_) ":"? ";"?]* @class.inside
+      "}"?)) @class.around

crates/languages/src/css/textobjects.scm

@@ -0,0 +1,30 @@
+(comment) @comment.around
+
+(rule_set
+    (block (
+        "{"
+        (_)* @function.inside
+        "}" ))) @function.around
+(keyframe_block
+    (block (
+        "{"
+        (_)* @function.inside
+        "}" ))) @function.around
+
+(media_statement
+    (block (
+        "{"
+        (_)* @class.inside
+        "}" ))) @class.around
+
+(supports_statement
+    (block (
+        "{"
+        (_)* @class.inside
+        "}" ))) @class.around
+
+(keyframes_statement
+    (keyframe_block_list (
+        "{"
+        (_)* @class.inside
+        "}" ))) @class.around

crates/languages/src/go/textobjects.scm

@@ -0,0 +1,25 @@
+(function_declaration
+    body: (_
+        "{"
+        (_)* @function.inside
+        "}")) @function.around
+
+(method_declaration
+    body: (_
+        "{"
+        (_)* @function.inside
+        "}")) @function.around
+
+(type_declaration
+    (type_spec (struct_type (field_declaration_list (
+        "{"
+        (_)* @class.inside
+        "}")?)))) @class.around
+
+(type_declaration
+    (type_spec (interface_type
+        (_)* @class.inside))) @class.around
+
+(type_declaration) @class.around
+
+(comment)+ @comment.around

crates/languages/src/javascript/textobjects.scm

@@ -0,0 +1,51 @@
+(comment)+ @comment.around
+
+(function_declaration
+    body: (_
+        "{"
+        (_)* @function.inside
+        "}")) @function.around
+
+(method_definition
+    body: (_
+        "{"
+        (_)* @function.inside
+        "}")) @function.around
+
+(function_expression
+    body: (_
+        "{"
+        (_)* @function.inside
+        "}")) @function.around
+
+(arrow_function
+    body: (statement_block
+        "{"
+        (_)* @function.inside
+        "}")) @function.around
+
+(arrow_function) @function.around
+
+(generator_function
+    body: (_
+        "{"
+        (_)* @function.inside
+        "}")) @function.around
+
+(generator_function_declaration
+    body: (_
+        "{"
+        (_)* @function.inside
+        "}")) @function.around
+
+(class_declaration
+    body: (_
+        "{"
+        [(_) ";"?]* @class.inside
+        "}" )) @class.around
+
+(class
+    body: (_
+        "{"
+        [(_) ";"?]* @class.inside
+        "}" )) @class.around

crates/languages/src/json/textobjects.scm

@@ -0,0 +1 @@
+(comment)+ @comment.around

crates/languages/src/jsonc/textobjects.scm

@@ -0,0 +1 @@
+(comment)+ @comment.around

crates/languages/src/markdown/textobjects.scm

@@ -0,0 +1,3 @@
+(section
+    (atx_heading)
+    (_)* @class.inside) @class.around

crates/languages/src/python/textobjects.scm

@@ -0,0 +1,7 @@
+(comment)+ @comment.around
+
+(function_definition
+  body: (_) @function.inside) @function.around
+
+(class_definition
+  body: (_) @class.inside) @class.around

crates/languages/src/rust/outline.scm

@@ -15,11 +15,7 @@
     (visibility_modifier)? @context
     name: (_) @name) @item
 
-(impl_item
+(function_item
-    "impl" @context
-    trait: (_)? @name
-    "for"? @context
-    type: (_) @name
     body: (_ "{" @open (_)* "}" @close)) @item
 
 (trait_item

crates/languages/src/rust/textobjects.scm

@@ -0,0 +1,51 @@
+; functions
+(function_signature_item) @function.around
+
+(function_item
+    body: (_
+        "{"
+        (_)* @function.inside
+        "}" )) @function.around
+
+; classes
+(struct_item
+    body: (_
+        ["{" "("]?
+        [(_) ","?]* @class.inside
+        ["}" ")"]? )) @class.around
+
+(enum_item
+   body: (_
+       "{"
+       [(_) ","?]* @class.inside
+       "}" )) @class.around
+
+(union_item
+    body: (_
+        "{"
+        [(_) ","?]* @class.inside
+        "}" )) @class.around
+
+(trait_item
+    body: (_
+        "{"
+        [(_) ","?]* @class.inside
+        "}" )) @class.around
+
+(impl_item
+    body: (_
+        "{"
+        [(_) ","?]* @class.inside
+        "}" )) @class.around
+
+(mod_item
+    body: (_
+        "{"
+        [(_) ","?]* @class.inside
+        "}" )) @class.around
+
+; comments
+
+(line_comment)+ @comment.around
+
+(block_comment) @comment.around

crates/languages/src/tsx/textobjects.scm

@@ -0,0 +1,79 @@
+(comment)+ @comment.around
+
+(function_declaration
+    body: (_
+        "{"
+        (_)* @function.inside
+        "}")) @function.around
+
+(method_definition
+    body: (_
+        "{"
+        (_)* @function.inside
+        "}")) @function.around
+
+(function_expression
+    body: (_
+        "{"
+        (_)* @function.inside
+        "}")) @function.around
+
+(arrow_function
+    body: (statement_block
+        "{"
+        (_)* @function.inside
+        "}")) @function.around
+
+(arrow_function) @function.around
+(function_signature) @function.around
+
+(generator_function
+    body: (_
+        "{"
+        (_)* @function.inside
+        "}")) @function.around
+
+(generator_function_declaration
+    body: (_
+        "{"
+        (_)* @function.inside
+        "}")) @function.around
+
+(class_declaration
+    body: (_
+        "{"
+        [(_) ";"?]* @class.inside
+        "}" )) @class.around
+
+(class
+    body: (_
+        "{"
+        (_)* @class.inside
+        "}" )) @class.around
+
+(interface_declaration
+    body: (_
+        "{"
+        [(_) ";"?]* @class.inside
+        "}" )) @class.around
+
+(enum_declaration
+    body: (_
+        "{"
+        [(_) ","?]* @class.inside
+        "}" )) @class.around
+
+(ambient_declaration
+    (module
+    body: (_
+        "{"
+        [(_) ";"?]* @class.inside
+        "}" ))) @class.around
+
+(internal_module
+    body: (_
+        "{"
+        [(_) ";"?]* @class.inside
+        "}" )) @class.around
+
+(type_alias_declaration) @class.around

crates/languages/src/typescript/textobjects.scm

@@ -0,0 +1,79 @@
+(comment)+ @comment.around
+
+(function_declaration
+    body: (_
+        "{"
+        (_)* @function.inside
+        "}")) @function.around
+
+(method_definition
+    body: (_
+        "{"
+        (_)* @function.inside
+        "}")) @function.around
+
+(function_expression
+    body: (_
+        "{"
+        (_)* @function.inside
+        "}")) @function.around
+
+(arrow_function
+    body: (statement_block
+        "{"
+        (_)* @function.inside
+        "}")) @function.around
+
+(arrow_function) @function.around
+(function_signature) @function.around
+
+(generator_function
+    body: (_
+        "{"
+        (_)* @function.inside
+        "}")) @function.around
+
+(generator_function_declaration
+    body: (_
+        "{"
+        (_)* @function.inside
+        "}")) @function.around
+
+(class_declaration
+    body: (_
+        "{"
+        [(_) ";"?]* @class.inside
+        "}" )) @class.around
+
+(class
+    body: (_
+        "{"
+        (_)* @class.inside
+        "}" )) @class.around
+
+(interface_declaration
+    body: (_
+        "{"
+        [(_) ";"?]* @class.inside
+        "}" )) @class.around
+
+(enum_declaration
+    body: (_
+        "{"
+        [(_) ","?]* @class.inside
+        "}" )) @class.around
+
+(ambient_declaration
+    (module
+    body: (_
+        "{"
+        [(_) ";"?]* @class.inside
+        "}" ))) @class.around
+
+(internal_module
+    body: (_
+        "{"
+        [(_) ";"?]* @class.inside
+        "}" )) @class.around
+
+(type_alias_declaration) @class.around

crates/languages/src/yaml/textobjects.scm

@@ -0,0 +1 @@
+(comment)+ @comment

crates/multi_buffer/src/multi_buffer.rs

@@ -3441,6 +3441,30 @@ impl MultiBufferSnapshot {
         })
     }
 
+    pub fn excerpt_before(&self, id: ExcerptId) -> Option<MultiBufferExcerpt<'_>> {
+        let start_locator = self.excerpt_locator_for_id(id);
+        let mut cursor = self.excerpts.cursor::<Option<&Locator>>(&());
+        cursor.seek(&Some(start_locator), Bias::Left, &());
+        cursor.prev(&());
+        let excerpt = cursor.item()?;
+        Some(MultiBufferExcerpt {
+            excerpt,
+            excerpt_offset: 0,
+        })
+    }
+
+    pub fn excerpt_after(&self, id: ExcerptId) -> Option<MultiBufferExcerpt<'_>> {
+        let start_locator = self.excerpt_locator_for_id(id);
+        let mut cursor = self.excerpts.cursor::<Option<&Locator>>(&());
+        cursor.seek(&Some(start_locator), Bias::Left, &());
+        cursor.next(&());
+        let excerpt = cursor.item()?;
+        Some(MultiBufferExcerpt {
+            excerpt,
+            excerpt_offset: 0,
+        })
+    }
+
     pub fn excerpt_boundaries_in_range<R, T>(
         &self,
         range: R,
@@ -4689,6 +4713,26 @@ impl<'a> MultiBufferExcerpt<'a> {
         }
     }
 
+    pub fn id(&self) -> ExcerptId {
+        self.excerpt.id
+    }
+
+    pub fn start_anchor(&self) -> Anchor {
+        Anchor {
+            buffer_id: Some(self.excerpt.buffer_id),
+            excerpt_id: self.excerpt.id,
+            text_anchor: self.excerpt.range.context.start,
+        }
+    }
+
+    pub fn end_anchor(&self) -> Anchor {
+        Anchor {
+            buffer_id: Some(self.excerpt.buffer_id),
+            excerpt_id: self.excerpt.id,
+            text_anchor: self.excerpt.range.context.end,
+        }
+    }
+
     pub fn buffer(&self) -> &'a BufferSnapshot {
         &self.excerpt.buffer
     }

crates/vim/src/motion.rs

@@ -11,6 +11,7 @@ use language::{CharKind, Point, Selection, SelectionGoal};
 use multi_buffer::MultiBufferRow;
 use serde::Deserialize;
 use std::ops::Range;
+use workspace::searchable::Direction;
 
 use crate::{
     normal::mark,
@@ -104,6 +105,16 @@ pub enum Motion {
     WindowTop,
     WindowMiddle,
     WindowBottom,
+    NextSectionStart,
+    NextSectionEnd,
+    PreviousSectionStart,
+    PreviousSectionEnd,
+    NextMethodStart,
+    NextMethodEnd,
+    PreviousMethodStart,
+    PreviousMethodEnd,
+    NextComment,
+    PreviousComment,
 
     // we don't have a good way to run a search synchronously, so
     // we handle search motions by running the search async and then
@@ -269,6 +280,16 @@ actions!(
         WindowTop,
         WindowMiddle,
         WindowBottom,
+        NextSectionStart,
+        NextSectionEnd,
+        PreviousSectionStart,
+        PreviousSectionEnd,
+        NextMethodStart,
+        NextMethodEnd,
+        PreviousMethodStart,
+        PreviousMethodEnd,
+        NextComment,
+        PreviousComment,
     ]
 );
 
@@ -454,6 +475,37 @@ pub fn register(editor: &mut Editor, cx: &mut ViewContext<Vim>) {
     Vim::action(editor, cx, |vim, &WindowBottom, cx| {
         vim.motion(Motion::WindowBottom, cx)
     });
+
+    Vim::action(editor, cx, |vim, &PreviousSectionStart, cx| {
+        vim.motion(Motion::PreviousSectionStart, cx)
+    });
+    Vim::action(editor, cx, |vim, &NextSectionStart, cx| {
+        vim.motion(Motion::NextSectionStart, cx)
+    });
+    Vim::action(editor, cx, |vim, &PreviousSectionEnd, cx| {
+        vim.motion(Motion::PreviousSectionEnd, cx)
+    });
+    Vim::action(editor, cx, |vim, &NextSectionEnd, cx| {
+        vim.motion(Motion::NextSectionEnd, cx)
+    });
+    Vim::action(editor, cx, |vim, &PreviousMethodStart, cx| {
+        vim.motion(Motion::PreviousMethodStart, cx)
+    });
+    Vim::action(editor, cx, |vim, &NextMethodStart, cx| {
+        vim.motion(Motion::NextMethodStart, cx)
+    });
+    Vim::action(editor, cx, |vim, &PreviousMethodEnd, cx| {
+        vim.motion(Motion::PreviousMethodEnd, cx)
+    });
+    Vim::action(editor, cx, |vim, &NextMethodEnd, cx| {
+        vim.motion(Motion::NextMethodEnd, cx)
+    });
+    Vim::action(editor, cx, |vim, &NextComment, cx| {
+        vim.motion(Motion::NextComment, cx)
+    });
+    Vim::action(editor, cx, |vim, &PreviousComment, cx| {
+        vim.motion(Motion::PreviousComment, cx)
+    });
 }
 
 impl Vim {
@@ -536,6 +588,16 @@ impl Motion {
             | WindowTop
             | WindowMiddle
             | WindowBottom
+            | NextSectionStart
+            | NextSectionEnd
+            | PreviousSectionStart
+            | PreviousSectionEnd
+            | NextMethodStart
+            | NextMethodEnd
+            | PreviousMethodStart
+            | PreviousMethodEnd
+            | NextComment
+            | PreviousComment
             | Jump { line: true, .. } => true,
             EndOfLine { .. }
             | Matching
@@ -607,6 +669,16 @@ impl Motion {
             | NextLineStart
             | PreviousLineStart
             | ZedSearchResult { .. }
+            | NextSectionStart
+            | NextSectionEnd
+            | PreviousSectionStart
+            | PreviousSectionEnd
+            | NextMethodStart
+            | NextMethodEnd
+            | PreviousMethodStart
+            | PreviousMethodEnd
+            | NextComment
+            | PreviousComment
             | Jump { .. } => false,
         }
     }
@@ -652,6 +724,16 @@ impl Motion {
             | FirstNonWhitespace { .. }
             | FindBackward { .. }
             | Jump { .. }
+            | NextSectionStart
+            | NextSectionEnd
+            | PreviousSectionStart
+            | PreviousSectionEnd
+            | NextMethodStart
+            | NextMethodEnd
+            | PreviousMethodStart
+            | PreviousMethodEnd
+            | NextComment
+            | PreviousComment
             | ZedSearchResult { .. } => false,
             RepeatFind { last_find: motion } | RepeatFindReversed { last_find: motion } => {
                 motion.inclusive()
@@ -867,6 +949,47 @@ impl Motion {
                     return None;
                 }
             }
+            NextSectionStart => (
+                section_motion(map, point, times, Direction::Next, true),
+                SelectionGoal::None,
+            ),
+            NextSectionEnd => (
+                section_motion(map, point, times, Direction::Next, false),
+                SelectionGoal::None,
+            ),
+            PreviousSectionStart => (
+                section_motion(map, point, times, Direction::Prev, true),
+                SelectionGoal::None,
+            ),
+            PreviousSectionEnd => (
+                section_motion(map, point, times, Direction::Prev, false),
+                SelectionGoal::None,
+            ),
+
+            NextMethodStart => (
+                method_motion(map, point, times, Direction::Next, true),
+                SelectionGoal::None,
+            ),
+            NextMethodEnd => (
+                method_motion(map, point, times, Direction::Next, false),
+                SelectionGoal::None,
+            ),
+            PreviousMethodStart => (
+                method_motion(map, point, times, Direction::Prev, true),
+                SelectionGoal::None,
+            ),
+            PreviousMethodEnd => (
+                method_motion(map, point, times, Direction::Prev, false),
+                SelectionGoal::None,
+            ),
+            NextComment => (
+                comment_motion(map, point, times, Direction::Next),
+                SelectionGoal::None,
+            ),
+            PreviousComment => (
+                comment_motion(map, point, times, Direction::Prev),
+                SelectionGoal::None,
+            ),
         };
 
         (new_point != point || infallible).then_some((new_point, goal))
@@ -2129,6 +2252,231 @@ fn window_bottom(
     }
 }
 
+fn method_motion(
+    map: &DisplaySnapshot,
+    mut display_point: DisplayPoint,
+    times: usize,
+    direction: Direction,
+    is_start: bool,
+) -> DisplayPoint {
+    let Some((_, _, buffer)) = map.buffer_snapshot.as_singleton() else {
+        return display_point;
+    };
+
+    for _ in 0..times {
+        let point = map.display_point_to_point(display_point, Bias::Left);
+        let offset = point.to_offset(&map.buffer_snapshot);
+        let range = if direction == Direction::Prev {
+            0..offset
+        } else {
+            offset..buffer.len()
+        };
+
+        let possibilities = buffer
+            .text_object_ranges(range, language::TreeSitterOptions::max_start_depth(4))
+            .filter_map(|(range, object)| {
+                if !matches!(object, language::TextObject::AroundFunction) {
+                    return None;
+                }
+
+                let relevant = if is_start { range.start } else { range.end };
+                if direction == Direction::Prev && relevant < offset {
+                    Some(relevant)
+                } else if direction == Direction::Next && relevant > offset + 1 {
+                    Some(relevant)
+                } else {
+                    None
+                }
+            });
+
+        let dest = if direction == Direction::Prev {
+            possibilities.max().unwrap_or(offset)
+        } else {
+            possibilities.min().unwrap_or(offset)
+        };
+        let new_point = map.clip_point(dest.to_display_point(&map), Bias::Left);
+        if new_point == display_point {
+            break;
+        }
+        display_point = new_point;
+    }
+    display_point
+}
+
+fn comment_motion(
+    map: &DisplaySnapshot,
+    mut display_point: DisplayPoint,
+    times: usize,
+    direction: Direction,
+) -> DisplayPoint {
+    let Some((_, _, buffer)) = map.buffer_snapshot.as_singleton() else {
+        return display_point;
+    };
+
+    for _ in 0..times {
+        let point = map.display_point_to_point(display_point, Bias::Left);
+        let offset = point.to_offset(&map.buffer_snapshot);
+        let range = if direction == Direction::Prev {
+            0..offset
+        } else {
+            offset..buffer.len()
+        };
+
+        let possibilities = buffer
+            .text_object_ranges(range, language::TreeSitterOptions::max_start_depth(6))
+            .filter_map(|(range, object)| {
+                if !matches!(object, language::TextObject::AroundComment) {
+                    return None;
+                }
+
+                let relevant = if direction == Direction::Prev {
+                    range.start
+                } else {
+                    range.end
+                };
+                if direction == Direction::Prev && relevant < offset {
+                    Some(relevant)
+                } else if direction == Direction::Next && relevant > offset + 1 {
+                    Some(relevant)
+                } else {
+                    None
+                }
+            });
+
+        let dest = if direction == Direction::Prev {
+            possibilities.max().unwrap_or(offset)
+        } else {
+            possibilities.min().unwrap_or(offset)
+        };
+        let new_point = map.clip_point(dest.to_display_point(&map), Bias::Left);
+        if new_point == display_point {
+            break;
+        }
+        display_point = new_point;
+    }
+
+    display_point
+}
+
+fn section_motion(
+    map: &DisplaySnapshot,
+    mut display_point: DisplayPoint,
+    times: usize,
+    direction: Direction,
+    is_start: bool,
+) -> DisplayPoint {
+    if let Some((_, _, buffer)) = map.buffer_snapshot.as_singleton() {
+        for _ in 0..times {
+            let offset = map
+                .display_point_to_point(display_point, Bias::Left)
+                .to_offset(&map.buffer_snapshot);
+            let range = if direction == Direction::Prev {
+                0..offset
+            } else {
+                offset..buffer.len()
+            };
+
+            // we set a max start depth here because we want a section to only be "top level"
+            // similar to vim's default of '{' in the first column.
+            // (and without it, ]] at the start of editor.rs is -very- slow)
+            let mut possibilities = buffer
+                .text_object_ranges(range, language::TreeSitterOptions::max_start_depth(3))
+                .filter(|(_, object)| {
+                    matches!(
+                        object,
+                        language::TextObject::AroundClass | language::TextObject::AroundFunction
+                    )
+                })
+                .collect::<Vec<_>>();
+            possibilities.sort_by_key(|(range_a, _)| range_a.start);
+            let mut prev_end = None;
+            let possibilities = possibilities.into_iter().filter_map(|(range, t)| {
+                if t == language::TextObject::AroundFunction
+                    && prev_end.is_some_and(|prev_end| prev_end > range.start)
+                {
+                    return None;
+                }
+                prev_end = Some(range.end);
+
+                let relevant = if is_start { range.start } else { range.end };
+                if direction == Direction::Prev && relevant < offset {
+                    Some(relevant)
+                } else if direction == Direction::Next && relevant > offset + 1 {
+                    Some(relevant)
+                } else {
+                    None
+                }
+            });
+
+            let offset = if direction == Direction::Prev {
+                possibilities.max().unwrap_or(0)
+            } else {
+                possibilities.min().unwrap_or(buffer.len())
+            };
+
+            let new_point = map.clip_point(offset.to_display_point(&map), Bias::Left);
+            if new_point == display_point {
+                break;
+            }
+            display_point = new_point;
+        }
+        return display_point;
+    };
+
+    for _ in 0..times {
+        let point = map.display_point_to_point(display_point, Bias::Left);
+        let Some(excerpt) = map.buffer_snapshot.excerpt_containing(point..point) else {
+            return display_point;
+        };
+        let next_point = match (direction, is_start) {
+            (Direction::Prev, true) => {
+                let mut start = excerpt.start_anchor().to_display_point(&map);
+                if start >= display_point && start.row() > DisplayRow(0) {
+                    let Some(excerpt) = map.buffer_snapshot.excerpt_before(excerpt.id()) else {
+                        return display_point;
+                    };
+                    start = excerpt.start_anchor().to_display_point(&map);
+                }
+                start
+            }
+            (Direction::Prev, false) => {
+                let mut start = excerpt.start_anchor().to_display_point(&map);
+                if start.row() > DisplayRow(0) {
+                    *start.row_mut() -= 1;
+                }
+                map.clip_point(start, Bias::Left)
+            }
+            (Direction::Next, true) => {
+                let mut end = excerpt.end_anchor().to_display_point(&map);
+                *end.row_mut() += 1;
+                map.clip_point(end, Bias::Right)
+            }
+            (Direction::Next, false) => {
+                let mut end = excerpt.end_anchor().to_display_point(&map);
+                *end.column_mut() = 0;
+                if end <= display_point {
+                    *end.row_mut() += 1;
+                    let point_end = map.display_point_to_point(end, Bias::Right);
+                    let Some(excerpt) =
+                        map.buffer_snapshot.excerpt_containing(point_end..point_end)
+                    else {
+                        return display_point;
+                    };
+                    end = excerpt.end_anchor().to_display_point(&map);
+                    *end.column_mut() = 0;
+                }
+                end
+            }
+        };
+        if next_point == display_point {
+            break;
+        }
+        display_point = next_point;
+    }
+
+    display_point
+}
+
 #[cfg(test)]
 mod test {
 

crates/vim/src/object.rs

@@ -1,6 +1,10 @@
 use std::ops::Range;
 
-use crate::{motion::right, state::Mode, Vim};
+use crate::{
+    motion::right,
+    state::{Mode, Operator},
+    Vim,
+};
 use editor::{
     display_map::{DisplaySnapshot, ToDisplayPoint},
     movement::{self, FindRange},
@@ -10,7 +14,7 @@ use editor::{
 use itertools::Itertools;
 
 use gpui::{actions, impl_actions, ViewContext};
-use language::{BufferSnapshot, CharKind, Point, Selection};
+use language::{BufferSnapshot, CharKind, Point, Selection, TextObject, TreeSitterOptions};
 use multi_buffer::MultiBufferRow;
 use serde::Deserialize;
 
@@ -30,6 +34,9 @@ pub enum Object {
     Argument,
     IndentObj { include_below: bool },
     Tag,
+    Method,
+    Class,
+    Comment,
 }
 
 #[derive(Clone, Deserialize, PartialEq)]
@@ -61,7 +68,10 @@ actions!(
         CurlyBrackets,
         AngleBrackets,
         Argument,
-        Tag
+        Tag,
+        Method,
+        Class,
+        Comment
     ]
 );
 
@@ -107,6 +117,18 @@ pub fn register(editor: &mut Editor, cx: &mut ViewContext<Vim>) {
     Vim::action(editor, cx, |vim, _: &Argument, cx| {
         vim.object(Object::Argument, cx)
     });
+    Vim::action(editor, cx, |vim, _: &Method, cx| {
+        vim.object(Object::Method, cx)
+    });
+    Vim::action(editor, cx, |vim, _: &Class, cx| {
+        vim.object(Object::Class, cx)
+    });
+    Vim::action(editor, cx, |vim, _: &Comment, cx| {
+        if !matches!(vim.active_operator(), Some(Operator::Object { .. })) {
+            vim.push_operator(Operator::Object { around: true }, cx);
+        }
+        vim.object(Object::Comment, cx)
+    });
     Vim::action(
         editor,
         cx,
@@ -144,6 +166,9 @@ impl Object {
             | Object::CurlyBrackets
             | Object::SquareBrackets
             | Object::Argument
+            | Object::Method
+            | Object::Class
+            | Object::Comment
             | Object::IndentObj { .. } => true,
         }
     }
@@ -162,12 +187,15 @@ impl Object {
             | Object::Parentheses
             | Object::SquareBrackets
             | Object::Tag
+            | Object::Method
+            | Object::Class
+            | Object::Comment
             | Object::CurlyBrackets
             | Object::AngleBrackets => true,
         }
     }
 
-    pub fn target_visual_mode(self, current_mode: Mode) -> Mode {
+    pub fn target_visual_mode(self, current_mode: Mode, around: bool) -> Mode {
         match self {
             Object::Word { .. }
             | Object::Sentence
@@ -186,8 +214,16 @@ impl Object {
             | Object::AngleBrackets
             | Object::VerticalBars
             | Object::Tag
+            | Object::Comment
             | Object::Argument
             | Object::IndentObj { .. } => Mode::Visual,
+            Object::Method | Object::Class => {
+                if around {
+                    Mode::VisualLine
+                } else {
+                    Mode::Visual
+                }
+            }
             Object::Paragraph => Mode::VisualLine,
         }
     }
@@ -238,6 +274,33 @@ impl Object {
             Object::AngleBrackets => {
                 surrounding_markers(map, relative_to, around, self.is_multiline(), '<', '>')
             }
+            Object::Method => text_object(
+                map,
+                relative_to,
+                if around {
+                    TextObject::AroundFunction
+                } else {
+                    TextObject::InsideFunction
+                },
+            ),
+            Object::Comment => text_object(
+                map,
+                relative_to,
+                if around {
+                    TextObject::AroundComment
+                } else {
+                    TextObject::InsideComment
+                },
+            ),
+            Object::Class => text_object(
+                map,
+                relative_to,
+                if around {
+                    TextObject::AroundClass
+                } else {
+                    TextObject::InsideClass
+                },
+            ),
             Object::Argument => argument(map, relative_to, around),
             Object::IndentObj { include_below } => indent(map, relative_to, around, include_below),
         }
@@ -441,6 +504,47 @@ fn around_next_word(
     Some(start..end)
 }
 
+fn text_object(
+    map: &DisplaySnapshot,
+    relative_to: DisplayPoint,
+    target: TextObject,
+) -> Option<Range<DisplayPoint>> {
+    let snapshot = &map.buffer_snapshot;
+    let offset = relative_to.to_offset(map, Bias::Left);
+
+    let excerpt = snapshot.excerpt_containing(offset..offset)?;
+    let buffer = excerpt.buffer();
+
+    let mut matches: Vec<Range<usize>> = buffer
+        .text_object_ranges(offset..offset, TreeSitterOptions::default())
+        .filter_map(|(r, m)| if m == target { Some(r) } else { None })
+        .collect();
+    matches.sort_by_key(|r| (r.end - r.start));
+    if let Some(range) = matches.first() {
+        return Some(range.start.to_display_point(map)..range.end.to_display_point(map));
+    }
+
+    let around = target.around()?;
+    let mut matches: Vec<Range<usize>> = buffer
+        .text_object_ranges(offset..offset, TreeSitterOptions::default())
+        .filter_map(|(r, m)| if m == around { Some(r) } else { None })
+        .collect();
+    matches.sort_by_key(|r| (r.end - r.start));
+    let around_range = matches.first()?;
+
+    let mut matches: Vec<Range<usize>> = buffer
+        .text_object_ranges(around_range.clone(), TreeSitterOptions::default())
+        .filter_map(|(r, m)| if m == target { Some(r) } else { None })
+        .collect();
+    matches.sort_by_key(|r| r.start);
+    if let Some(range) = matches.first() {
+        if !range.is_empty() {
+            return Some(range.start.to_display_point(map)..range.end.to_display_point(map));
+        }
+    }
+    return Some(around_range.start.to_display_point(map)..around_range.end.to_display_point(map));
+}
+
 fn argument(
     map: &DisplaySnapshot,
     relative_to: DisplayPoint,

crates/vim/src/visual.rs

@@ -308,7 +308,7 @@ impl Vim {
         if let Some(Operator::Object { around }) = self.active_operator() {
             self.pop_operator(cx);
             let current_mode = self.mode;
-            let target_mode = object.target_visual_mode(current_mode);
+            let target_mode = object.target_visual_mode(current_mode, around);
             if target_mode != current_mode {
                 self.switch_mode(target_mode, true, cx);
             }

docs/src/extensions/languages.md

@@ -69,6 +69,7 @@ several features:
 - Syntax overrides
 - Text redactions
 - Runnable code detection
+- Selecting classes, functions, etc.
 
 The following sections elaborate on how [Tree-sitter queries](https://tree-sitter.github.io/tree-sitter/using-parsers#query-syntax) enable these
 features in Zed, using [JSON syntax](https://www.json.org/json-en.html) as a guiding example.
@@ -259,6 +260,44 @@ For example, in JavaScript, we also disable auto-closing of single quotes within
 (comment) @comment.inclusive
 ```
 
+### Text objects
+
+The `textobjects.scm` file defines rules for navigating by text objects. This was added in Zed v0.165 and is currently used only in Vim mode.
+
+Vim provides two levels of granularity for navigating around files. Section-by-section with `[]` etc., and method-by-method with `]m` etc. Even languages that don't support functions and classes can work well by defining similar concepts. For example CSS defines a rule-set as a method, and a media-query as a class.
+
+For languages with closures, these typically should not count as functions in Zed. This is best-effort however, as languages like Javascript do not syntactically differentiate syntactically between closures and top-level function declarations.
+
+For languages with declarations like C, provide queries that match `@class.around` or `@function.around`. The `if` and `ic` text objects will default to these if there is no inside.
+
+If you are not sure what to put in textobjects.scm, both [nvim-treesitter-textobjects](https://github.com/nvim-treesitter/nvim-treesitter-textobjects), and the [Helix editor](https://github.com/helix-editor/helix) have queries for many languages. You can refer to the Zed [built-in languages](https://github.com/zed-industries/zed/tree/main/crates/languages/src) to see how to adapt these.
+
+| Capture          | Description                                                             | Vim mode                                         |
+| ---------------- | ----------------------------------------------------------------------- | ------------------------------------------------ |
+| @function.around | An entire function definition or equivalent small section of a file.    | `[m`, `]m`, `[M`,`]M` motions. `af` text object  |
+| @function.inside | The function body (the stuff within the braces).                        | `if` text object                                 |
+| @class.around    | An entire class definition or equivalent large section of a file.       | `[[`, `]]`, `[]`, `][` motions. `ac` text object |
+| @class.inside    | The contents of a class definition.                                     | `ic` text object                                 |
+| @comment.around  | An entire comment (e.g. all adjacent line comments, or a block comment) | `gc` text object                                 |
+| @comment.inside  | The contents of a comment                                               | `igc` text object (rarely supported)             |
+
+For example:
+
+```scheme
+; include only the content of the method in the function
+(method_definition
+    body: (_
+        "{"
+        (_)* @function.inside
+        "}")) @function.around
+
+; match function.around for declarations with no body
+(function_signature_item) @function.around
+
+; join all adjacent comments into one
+(comment)+ @comment.around
+```
+
 ### Text redactions
 
 The `redactions.scm` file defines text redaction rules. When collaborating and sharing your screen, it makes sure that certain syntax nodes are rendered in a redacted mode to avoid them from leaking.

docs/src/vim.md

@@ -79,12 +79,41 @@ The following commands use the language server to help you navigate and refactor
 
 ### Treesitter
 
-Treesitter is a powerful tool that Zed uses to understand the structure of your code. These commands help you navigate your code semantically.
+Treesitter is a powerful tool that Zed uses to understand the structure of your code. Zed provides motions that change the current cursor position, and text objects that can be used as the target of actions.
 
-| Command                      | Default Shortcut |
+| Command                         | Default Shortcut            |
-| ---------------------------- | ---------------- |
+| ------------------------------- | --------------------------- |
-| Select a smaller syntax node | `] x`            |
+| Go to next/previous method      | `] m` / `[ m`               |
-| Select a larger syntax node  | `[ x`            |
+| Go to next/previous method end  | `] M` / `[ M`               |
+| Go to next/previous section     | `] ]` / `[ [`               |
+| Go to next/previous section end | `] [` / `[ ]`               |
+| Go to next/previous comment     | `] /`, `] *` / `[ /`, `[ *` |
+| Select a larger syntax node     | `[ x`                       |
+| Select a larger syntax node     | `[ x`                       |
+
+| Text Objects                                               | Default Shortcut |
+| ---------------------------------------------------------- | ---------------- |
+| Around a class, definition, etc.                           | `a c`            |
+| Inside a class, definition, etc.                           | `i c`            |
+| Around a function, method etc.                             | `a f`            |
+| Inside a function, method, etc.                            | `i f`            |
+| A comment                                                  | `g c`            |
+| An argument, or list item, etc.                            | `i a`            |
+| An argument, or list item, etc. (including trailing comma) | `a a`            |
+| Around an HTML-like tag                                    | `i a`            |
+| Inside an HTML-like tag                                    | `i a`            |
+| The current indent level, and one line before and after    | `a I`            |
+| The current indent level, and one line before              | `a i`            |
+| The current indent level                                   | `i i`            |
+
+Note that the definitions for the targets of the `[m` family of motions are the same as the
+boundaries defined by `af`. The targets of the `[[` are the same as those defined by `ac`, though
+if there are no classes, then functions are also used. Similarly `gc` is used to find `[ /`. `g c`
+
+The definition of functions, classes and comments is language dependent, and support can be added
+to extensions by adding a [`textobjects.scm`]. The definition of arguments and tags operates at
+the tree-sitter level, but looks for certain patterns in the parse tree and is not currently configurable
+per language.
 
 ### Multi cursor