Shell Language - Syntax Highlight breaks with substring matching

[GrabbenD]

Check for existing issues

• Completed

Describe the bug / provide steps to reproduce it

Substring matching breaks syntax highlight in ZED (which doesn't happen with VSCode nor GitHub Markdown).

Bash 5.2 enables substring matching by default (see patsub_replacement). This is particularly useful for injecting strings, but only when a $variable is present. In this example --volume=/tmp/mnt:/mnt wont be printed unless item in export MOUNTS is uncommented:

#!/usr/bin/env bash

export MOUNTS=(
  #/tmp/mnt:/mnt
)

export PARAMS=(
  "${MOUNTS[@]/*/'--volume='&}"
  --tty='1'
  --interactive='1'
)

podman run "${PARAMS[@]}" archlinux
# podman run --tty=1 --interactive=1 archlinux

---

Reproducible example:

PARENT_FUNC() {
  local LIST=(1 2)
  export ITEMIZED=(
    #"${LIST[@]/*/'prefix'&'suffix'}" # OK
    "${LIST[@]/*/'prefix'&}"          # BREAKS HIGHLIGHT
  )

  NESTED_FUNC() {
    echo "${ITEMIZED[@]}"  # prefix1 prefix2
  }
}

PARENT_FUNC
NESTED_FUNC

---

Environment

Zed: v0.159.7 (Zed)
OS: Arch Linux Wayland
Memory: 62.6 GiB
Architecture: x86_64
GPU: AMD Radeon RX 7900 XT (RADV NAVI31) || radv || Mesa 24.1.3-arch1.1

---

If applicable, add mockups / screenshots to help explain present your vision of the feature

ZED without any extensions:

• OK
  

• BROKEN
  

For reference, I've also tried installing d1y/bash.zed (extensions/basher) & rburmorrison/shell.zed (extensions/shell) but either behaves identically as ZED with no extensions

[SomeoneToIgnore]

which doesn't happen with VSCode nor GitHub Markdown

They use different approaches to highlights, and whatever tree-sitter grammar in Zed is used, it seems to have issues with it.
It seems that this report should go to https://github.com/tree-sitter/tree-sitter-bash and not here.

[GrabbenD]

tree-sitter/tree-sitter-bash#279