fix(treesitter): offset directive associates range with capture (#18276)

Previously the `offset!` directive populated the metadata in such a way
that the new range could be attributed to a specific capture. #14046
made it so the directive simply stored just the new range in the
metadata and information about what capture the range is based from is
lost.

This change reverts that whilst also correcting the docs.

1 files changed, 35 insertions, 27 deletions

diff --git a/runtime/doc/treesitter.txt b/runtime/doc/treesitter.txt
index 339ae0c2ed..52b415bbd1 100644
--- a/runtime/doc/treesitter.txt
+++ b/runtime/doc/treesitter.txt
@@ -261,36 +261,37 @@ for a node or match and perform side effects. For example, the |set!|
 predicate sets metadata on the match or node : >
 	((identifier) @foo (#set! "type" "parameter"))
 
-Here is a list of built-in directives:
+Built-in directives:
 
-	`set!`						*ts-directive-set!*
-		Sets key/value metadata for a specific node or match : >
-			((identifier) @foo (#set! @foo "kind" "parameter"))
-			((node1) @left (node2) @right (#set! "type" "pair"))
+        `set!`                                              *ts-directive-set!*
+                Sets key/value metadata for a specific match or capture.
+                Value is accessible as either `metadata[key]` (match
+                specific) or `metadata[capture_id][key]` (capture specific).
+
+                Parameters: ~
+                    {capture_id} (optional)
+                    {key}
+                    {value}
+
+                Examples: >
+                        ((identifier) @foo (#set! @foo "kind" "parameter"))
+                        ((node1) @left (node2) @right (#set! "type" "pair"))
 <
-	`offset!`					*ts-directive-offset!*
-		Takes the range of the captured node and applies the offsets
-		to it's range : >
-			((identifier) @constant (#offset! @constant 0 1 0 -1))
-<		This will generate a range object for the captured node with
-		the offsets applied. The arguments are
-		`({capture_id}, {start_row}, {start_col}, {end_row}, {end_col}, {key?})`
-		The default key is "offset".
-
-					*vim.treesitter.query.add_directive()*
-vim.treesitter.query.add_directive({name}, {handler})
-
-This adds a directive with the name {name} to be used in queries.
-{handler} should be a function whose signature will be : >
-	handler(match, pattern, bufnr, predicate, metadata)
-Handlers can set match level data by setting directly on the metadata object
-`metadata.key = value` Handlers can set node level data by using the capture
-id on the metadata table `metadata[capture_id].key = value`
+        `offset!`                                        *ts-directive-offset!*
+                Takes the range of the captured node and applies an offset.
+                This will generate a new range object for the captured node
+                as `metadata[capture_id].range`.
 
-					*vim.treesitter.query.list_directives()*
-vim.treesitter.query.list_directives()
+                Parameters: ~
+                    {capture_id}
+                    {start_row}
+                    {start_col}
+                    {end_row}
+                    {end_col}
 
-This lists the currently available directives to use in queries.
+                Example: >
+                        ((identifier) @constant (#offset! @constant 0 1 0 -1))
+<
 
 Treesitter syntax highlighting (WIP)		     *lua-treesitter-highlight*
 
@@ -409,10 +410,15 @@ Lua module: vim.treesitter.query                            *treesitter-query*
 add_directive({name}, {handler}, {force})                    *add_directive()*
                 Adds a new directive to be used in queries
 
+                Handlers can set match level data by setting directly on the
+                metadata object `metadata.key = value`, additionally, handlers
+                can set node level data by using the capture id on the
+                metadata table `metadata[capture_id].key = value`
+
                 Parameters: ~
                     {name}     the name of the directive, without leading #
                     {handler}  the handler function to be used signature will
-                               be (match, pattern, bufnr, predicate)
+                               be (match, pattern, bufnr, predicate, metadata)
 
 add_predicate({name}, {handler}, {force})                    *add_predicate()*
                 Adds a new predicate to be used in queries
@@ -451,6 +457,8 @@ get_query_files({lang}, {query_name}, {is_included})
                                    as `nil`
 
 list_directives()                                          *list_directives()*
+                Lists the currently available directives to use in queries.
+
                 Return: ~
                     The list of supported directives.