Captures dont work with +/* quantifiers.

I want to create a custom textobject for c and cpp which will select all the statements inside function body excluding function parenthesis. I have added the below query search to textobjects.scm, but nvim-treesitter query seach does not work as expected. I am facing similar issue with nvim-treesitter/playground as well.

(function_definition
  body:  (compound_statement
              ("{" (_)* @function.inner . "}"))?) @function.outer

Steps to reproduce the behavior:

Create a file foo.c
Paste the following contents in foo.c

int foo(int x) {
  int a = 3;
  int b = 4;
  return x + 1;
}

Install nvim-treesitter/playground
In the query editor paste the following

(function_definition
  body:  (compound_statement
              ("{" (_)* @function.inner . "}"))?) @function.outer

@function.inner incorrectly highlights only the last statement inside function parenthesis.

whereas @function.inner should highlight all the statements inside parenthesis.

Output of :checkhealth nvim_treesitter


health#nvim_treesitter#check
Installation

OK: tree-sitter found  0.20.0 (parser generator, only needed for :TSInstallFromGrammar)
OK: node found v16.6.1 (only needed for :TSInstallFromGrammar)
OK: git executable found.
OK: cc executable found. Selected from { vim.NIL, "cc", "gcc", "clang", "cl" }
OK: Neovim was compiled with tree-sitter runtime ABI version 13 (required >=13). Parsers must be compatible with runtime ABI.

Parser/Features H L F I J

ocaml_interface✓ ✓ ✓ . ✓
beancount      ✓ . ✓ . .
python         ✓ ✓ ✓ ✓ ✓
sparql         ✓ ✓ ✓ ✓ ✓
comment        ✓ . . . .
lua            ✓ ✓ ✓ ✓ ✓
ocaml          ✓ ✓ ✓ . ✓
go             ✓ ✓ ✓ ✓ ✓
ql             ✓ ✓ . ✓ ✓
json           ✓ ✓ ✓ ✓ .
jsdoc          ✓ . . . .
ledger         ✓ . ✓ ✓ ✓
php            ✓ ✓ ✓ ✓ ✓
clojure        ✓ ✓ ✓ . ✓
supercollider  ✓ ✓ ✓ ✓ ✓
heex           ✓ . ✓ ✓ ✓
typescript     ✓ ✓ ✓ ✓ ✓
fennel         ✓ ✓ . . ✓
query          ✓ ✓ ✓ ✓ ✓
cpp            ✓ ✓ ✓ ✓ ✓
vue            ✓ . ✓ . ✓
latex          ✓ . ✓ . ✓
rst            ✓ ✓ . . ✓
css            ✓ . ✓ ✓ ✓
glimmer        ✓ . . . .
erlang         . . . . .
regex          ✓ . . . .
svelte         ✓ . ✓ ✓ ✓
c              ✓ ✓ ✓ ✓ ✓
fortran        ✓ . ✓ ✓ .
teal           ✓ ✓ ✓ ✓ ✓
java           ✓ ✓ . ✓ ✓
gomod          ✓ . . . .
dart           ✓ ✓ . ✓ ✓
verilog        ✓ ✓ ✓ . ✓
bash           ✓ ✓ ✓ . ✓
yaml           ✓ ✓ ✓ ✓ ✓
julia          ✓ ✓ ✓ ✓ ✓
vim            ✓ . . . ✓
cmake          ✓ . ✓ . .
turtle         ✓ ✓ ✓ ✓ ✓
zig            ✓ . ✓ ✓ ✓
html           ✓ ✓ ✓ ✓ ✓
bibtex         ✓ . ✓ ✓ .
r              ✓ ✓ . . .
tsx            ✓ ✓ ✓ ✓ ✓
yang           ✓ . ✓ . .
javascript     ✓ ✓ ✓ ✓ ✓
surface        ✓ . ✓ ✓ ✓
godotResource  ✓ ✓ ✓ . .
c_sharp        ✓ ✓ ✓ . ✓
commonlisp     ✓ ✓ ✓ . .
gdscript       ✓ ✓ . . ✓
elixir         ✓ ✓ ✓ ✓ ✓
cuda           ✓ ✓ ✓ ✓ ✓
haskell        ✓ . . . ✓
ocamllex       ✓ . . . ✓
kotlin         ✓ . . . ✓
ruby           ✓ ✓ ✓ ✓ ✓
fish           ✓ ✓ ✓ ✓ ✓
devicetree     ✓ ✓ ✓ ✓ ✓
scala          . . . . .
dockerfile     ✓ . . . ✓
rust           ✓ ✓ ✓ ✓ ✓
swift          . . . . .
toml           ✓ ✓ ✓ ✓ ✓
tlaplus        ✓ . ✓ . ✓
elm            . . . . .
jsonc          ✓ ✓ ✓ ✓ ✓
graphql        ✓ . . ✓ ✓
nix            ✓ ✓ ✓ . ✓
scss           ✓ . . ✓ .
hcl            ✓ . ✓ ✓ ✓

Legend: H[ighlight], L[ocals], F[olds], I[ndents], In[j]ections

+) multiple parsers found, only one will be used

x) errors found in the query, try to run :TSUpdate {lang}

Output of nvim --version


NVIM v0.5.0

Build type: Release

LuaJIT 2.0.5

Compilation: /usr/bin/cc -march=x86-64 -mtune=generic -O2 -pipe -fno-plt -fexceptions     -Wp,-D_FORTIFY_SOURCE=2 -Wformat -Werror=format-security     -fstack-clash-protection -fcf-protection -Wp,-U_FORTIFY_SOURCE -Wp,-D_FORTIFY_SOURCE=1

-DNVIM_TS_HAS_SET_MATCH_LIMIT -O2 -DNDEBUG -Wall -Wextra -pedantic -Wno-unused-parameter -Wstrict-prototypes -std=gnu99 -Wshadow -Wconversion -Wmissing-prototypes -Wimplicit-fallthrough -Wvla -fstack-protector-strong -fno-common -fdiagnostics-color=always -DINCLUDE_GENERATED_DECLARATIONS -D_GNU_SOURCE -DNVIM_MSGPACK_HAS_FLOAT32 -DNVIM_UNIBI_HAS_VAR_FROM -DMIN_LOG_LEVEL=3 -I/build/neovim/src/neovim-0.5.0/build/config -I/build/neovim/src/neovim-0.5.0/src -I/usr/include -I/build/neovim/src/neovim-0.5.0/build/src/nvim/auto -I/build/neovim/src/neovim-0.5.0/build/include

Compiled by builduser
Features: +acl +iconv +tui

See ":help feature-compile"
system vimrc file: "$VIM/sysinit.vim"

fall-back for $VIM: "/usr/share/nvim"
Run :checkhealth for more info

I have also tested this on neovim nightly 0.6.0+dev+43+g02bf251bb-1. I am facing the same issue.

Description

health#nvim_treesitter#check

Installation

Parser/Features H L F I J

Contributor guide

First steps

Research direction

Assessment