Fix showing \item[] in document symbols (#1044)

CHANGELOG.md

@@ -5,6 +5,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [Unreleased]
+
+### Fixed
+
+- Don't return document symbol with empty name if `\item[]` is encountered ([#1040](https://github.com/latex-lsp/texlab/issues/1040))
+
 ## [5.13.1] - 2024-03-16
 
 ### Fixed

crates/symbols/src/document/tex.rs

@@ -101,6 +101,7 @@ impl<'a> SymbolBuilder<'a> {
         let name = enum_item
             .label()
             .and_then(|label| label.content_text())
+            .filter(|text| !text.is_empty())
             .unwrap_or_else(|| "Item".into());
 
         let symbol = match self.find_label(enum_item.syntax()) {