docs: add priority option in buf_set_extmark

runtime/doc/api.txt

@@ -1311,6 +1311,34 @@ nvim_open_win({buffer}, {enter}, {config})                   *nvim_open_win()*
                                   and clearing the |EndOfBuffer| region in
                                   'winhighlight'.
 
+                              • `border`: style of (optional) window border. This can
+                                either be a string or an array. the string
+                                values are:
+                                • "none" No border. This is the default
+                                • "single" a single line box
+                                • "double" a double line box
+                                • "shadow" a drop shadow effect by blending
+                                  with the background. If it is an array it
+                                  should be an array of eight items or any
+                                  divisor of eight. The array will specifify
+                                  the eight chars building up the border in a
+                                  clockwise fashion starting with the top-left
+                                  corner. As, an example, the double box style
+                                  could be specified as: [ "╔", "═" ,"╗", "║",
+                                  "╝", "═", "╚", "║" ] if the number of chars
+                                  are less than eight, they will be repeated.
+                                  Thus an ASCII border could be specified as:
+                                  [ "/", "-", "\\", "|" ] or all chars the
+                                  same as: [ "x" ] An empty string can be used
+                                  to turn off a specific border, for instance:
+                                  [ "", "", "", ">", "", "", "", "<" ] will
+                                  only make vertical borders but not
+                                  horizontal ones. By default `FloatBorder`
+                                  highlight is used which links to `VertSplit`
+                                  when not defined. It could also be specified
+                                  by character: [ {"+", "MyCorner"}, {"x",
+                                  "MyBorder"} ]
+
                 Return: ~
                     Window handle, or 0 on error
 
@@ -2266,6 +2294,9 @@ nvim_buf_set_extmark({buffer}, {ns_id}, {line}, {col}, {opts})
                                 exists) will be shifted in when new text is
                                 inserted (true for right, false for left).
                                 Defaults to false.
+                              • priority: a priority value for the highlight
+                                group. For example treesitter highlighting
+                                uses a value of 100.
 
                 Return: ~
                     Id of the created/updated extmark

runtime/doc/lsp.txt

@@ -1467,6 +1467,25 @@ progress_handler({_}, {_}, {params}, {client_id})
                 See also: ~
                     https://microsoft.github.io/language-server-protocol/specifications/specification-current/#workspace_executeCommand
 
+                                           *vim.lsp.handlers.signature_help()*
+signature_help({_}, {method}, {result}, {_}, {bufnr}, {config})
+                Parameters: ~
+                    {config}  table Configuration table.
+                              • border: (default=nil)
+                                • Add borders to the floating window
+                                • See |vim.api.nvim_open_win()|
+
+                See also: ~
+                    https://microsoft.github.io/language-server-protocol/specifications/specification-current/#textDocument_declaration@seehttps://microsoft.github.io/language-server-protocol/specifications/specification-current/#textDocument_definition@seehttps://microsoft.github.io/language-server-protocol/specifications/specification-current/#textDocument_typeDefinition@seehttps://microsoft.github.io/language-server-protocol/specifications/specification-current/#textDocument_implementation|lsp-handler| for the method "textDocument/signatureHelp">
+
+                 vim.lsp.handlers["textDocument/signatureHelp"] = vim.lsp.with(
+                   vim.lsp.handlers.signature_help, {
+                     -- Use a sharp border with `FloatBorder` highlights
+                     border = "single"
+                   }
+                 )
+<
+
 
 ==============================================================================
 Lua module: vim.lsp.util                                            *lsp-util*
@@ -1541,13 +1560,20 @@ close_preview_autocmd({events}, {winnr})
                     |autocmd-events|
 
                                                  *vim.lsp.util.compute_diff()*
-compute_diff({old_lines}, {new_lines}, {start_line_idx}, {end_line_idx})
+compute_diff({old_lines}, {new_lines}, {start_line_idx}, {end_line_idx},
+             {offset_encoding})
                 Returns the range table for the difference between old and new
                 lines
 
                 Parameters: ~
-                    {old_lines}  table list of lines
+                    {old_lines}        table list of lines
-                    {new_lines}  table list of lines
+                    {new_lines}        table list of lines
+                    {start_line_idx}   int line to begin search for first
+                                       difference
+                    {end_line_idx}     int line to begin search for last
+                                       difference
+                    {offset_encoding}  string encoding requested by language
+                                       server
 
                 Return: ~
                     table start_line_idx and start_col_idx of range

src/nvim/api/buffer.c

@@ -1449,6 +1449,8 @@ Array nvim_buf_get_extmarks(Buffer buffer, Integer ns_id,
 ///                   the extmark end position (if it exists) will be shifted
 ///                   in when new text is inserted (true for right, false
 ///                   for left). Defaults to false.
+///               - priority: a priority value for the highlight group. For
+///                   example treesitter highlighting uses a value of 100.
 /// @param[out]  err   Error details, if any
 /// @return Id of the created/updated extmark
 Integer nvim_buf_set_extmark(Buffer buffer, Integer ns_id,