Bash expression with arithmetic operations causing syntax error in bash-language-server

[Eval Exec]

Code editor

Emacs

Platform

NixOS

Version

5.1.2

What steps will reproduce the bug?

Create a file test.sh
write content:

#!/usr/bin/env bash
a=4
b=6
num=$((($a + $b) / 2))
echo ${num}

Then bash-language-server will report:

(bash-language-server): 08:14:09.764 WARNING    Error while parsing file:///tmp/bash/test.sh: syntax error

How often does it reproduce? Is there a required condition?

No, its can reproduce 100%.

What is the expected behavior?

no warning.

What do you see instead?

I see bash-language-server report an error:

(bash-language-server): 08:14:09.764 WARNING    Error while parsing file:///tmp/bash/test.sh: syntax error

Additional information

No response

[Kenneth Skovhus]

This is related to the treesitter bash grammar, so unfortunately nothing we can do here.