I am attempting to implement treesit for the current elixir-mode using the
branch feature/trees-sitter. For implementing beginning-of-defun-function
using treesit I am running into an issue where the Emacs will hang
indefinitely. Using (setq-local treesit-defun-type-regexp (rx (or "call")))
yields the same result.

For the following node-at-point output

(do_block (call target: (identifier)))

with Elixir code

# foo.ex
defmodule Foo do
  <<point/cursor here>>def bar(), do: "bar"
end

When I call `(treesit-search-forward-goto (rx (or "call")) 'start nil t)`
the function `treesit-search-forward` seems to get stuck.

Elixir does not strictly have a begin function, but can be determined as
one of the following:
; * modules and protocols
(call
  target: (identifier) @ignore
  (arguments (alias) @name)
  (#match? @ignore "^(defmodule|defprotocol)$")) @definition.module

; * functions/macros
(call
  target: (identifier) @ignore
  (arguments
    [
      ; zero-arity functions with no parentheses
      (identifier) @name
      ; regular function clause
      (call target: (identifier) @name)
      ; function clause with a guard clause
      (binary_operator
        left: (call target: (identifier) @name)
        operator: "when")
    ])
  (#match? @ignore
"^(def|defp|defdelegate|defguard|defguardp|defmacro|defmacrop|defn|defnp)$"))
@definition.function

The elixir tree sitter implementation is here:
https://github.com/elixir-lang/tree-sitter-elixir

I lack the knowledge to further debug this or find a clean workaround, but
I'm almost sure that treesit-search-forward should never hang.

In GNU Emacs 29.0.50 (build 3, x86_64-pc-linux-gnu, GTK+ Version
 3.24.34, cairo version 1.17.6) of 2022-10-22 built on melissa.local
Repository revision: 7c750343be6309a78d3fd289959bca241d9daf5d
Repository branch: feature/tree-sitter
Windowing system distributor 'The X.Org Foundation', version 11.0.12101004
System Description: Arch Linux

Configured using:
 'configure --with-tree-sitter --with-native-compilation'

Configured features:
ACL CAIRO DBUS FREETYPE GIF GLIB GMP GNUTLS GPM GSETTINGS HARFBUZZ JPEG
JSON TREE-SITTER LCMS2 LIBSYSTEMD LIBXML2 MODULES NATIVE_COMP NOTIFY
INOTIFY PDUMPER PNG RSVG SECCOMP SOUND SQLITE3 THREADS TIFF
TOOLKIT_SCROLL_BARS WEBP X11 XDBE XIM XINPUT2 XPM GTK3 ZLIB

Important settings:
  value of $LANG: en_ZA.UTF-8
  locale-coding-system: utf-8-unix

Major mode: Lisp Interaction

Minor modes in effect:
  tooltip-mode: t
  global-eldoc-mode: t
  eldoc-mode: t
  show-paren-mode: t
  electric-indent-mode: t
  mouse-wheel-mode: t
  tool-bar-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  blink-cursor-mode: t
  line-number-mode: t
  indent-tabs-mode: t
  transient-mark-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t

Load-path shadows:
None found.

Features:
(shadow sort mail-extr emacsbug message mailcap yank-media puny dired
dired-loaddefs rfc822 mml mml-sec password-cache epa epg rfc6068
epg-config gnus-util text-property-search mm-decode mm-bodies mm-encode
mail-parse rfc2231 mailabbrev gmm-utils mailheader sendmail rfc2047
rfc2045 ietf-drums mm-util mail-prsvr mail-utils time-date comp
comp-cstr warnings icons subr-x cl-extra help-mode bytecomp byte-compile
cconv elixir-mode derived rx pcase cl-macs gv treesit cl-seq cl-loaddefs
cl-lib rmc iso-transl tooltip eldoc paren electric uniquify ediff-hook
vc-hooks lisp-float-type elisp-mode mwheel term/x-win x-win
term/common-win x-dnd tool-bar dnd fontset image regexp-opt fringe
tabulated-list replace newcomment text-mode lisp-mode prog-mode register
page tab-bar menu-bar rfn-eshadow isearch easymenu timer select
scroll-bar mouse jit-lock font-lock syntax font-core term/tty-colors
frame minibuffer nadvice seq simple cl-generic indonesian philippine
cham georgian utf-8-lang misc-lang vietnamese tibetan thai tai-viet lao
korean japanese eucjp-ms cp51932 hebrew greek romanian slovak czech
european ethiopic indian cyrillic chinese composite emoji-zwj charscript
charprop case-table epa-hook jka-cmpr-hook help abbrev obarray oclosure
cl-preloaded button loaddefs faces cus-face macroexp files window
text-properties overlay sha1 md5 base64 format env code-pages mule
custom widget keymap hashtable-print-readable backquote threads dbusbind
inotify lcms2 dynamic-setting system-font-setting font-render-setting
cairo move-toolbar gtk x-toolkit xinput2 x multi-tty
make-network-process native-compile emacs)

Memory information:
((conses 16 81171 6071)
 (symbols 48 7449 0)
 (strings 32 20132 1351)
 (string-bytes 1 613689)
 (vectors 16 15685)
 (vector-slots 8 324392 11268)
 (floats 8 27 29)
 (intervals 56 211 0)
 (buffers 1008 11))