Don't report parse errors for paths with env vars (#934)

Fixes #931.

CHANGELOG.md

@@ -16,6 +16,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Fix loading bibliographies from `kpathsea` search path ([#923](https://github.com/latex-lsp/texlab/issues/923))
 - Don't report duplicate results when using goto definition on includes ([#924](https://github.com/latex-lsp/texlab/issues/924))
 - Fix project detection when there exist files with the same name ([#923](https://github.com/latex-lsp/texlab/issues/923))
+- Do not report parse errors with `$` in paths ([#931](https://github.com/latex-lsp/texlab/issues/931))
 
 ## [5.9.2] - 2023-08-14
 

crates/parser/src/latex.rs

@@ -714,6 +714,7 @@ impl<'a> Parser<'a> {
                 | Token::Comma
                 | Token::LBrack
                 | Token::RBrack
+                | Token::Dollar
                 | Token::CommandName(CommandName::Generic) => self.path(),
                 Token::LCurly => self.curly_group_path(),
                 Token::Whitespace | Token::Pipe => self.eat(),
@@ -738,6 +739,7 @@ impl<'a> Parser<'a> {
                 | Token::RBrack
                 | Token::LParen
                 | Token::RParen
+                | Token::Dollar
                 | Token::CommandName(CommandName::Generic) => self.path(),
                 Token::Whitespace
                 | Token::LineBreak
@@ -767,6 +769,7 @@ impl<'a> Parser<'a> {
                 | Token::RBrack
                 | Token::LParen
                 | Token::RParen
+                | Token::Dollar
                 | Token::CommandName(CommandName::Generic) => self.eat(),
                 Token::LCurly => self.curly_group_path(),
                 _ => break,

crates/parser/src/snapshots/parser__latex__tests__parse@issue_931.txt.snap

@@ -0,0 +1,16 @@
+---
+source: crates/parser/src/latex.rs
+expression: root
+input_file: crates/parser/src/test_data/latex/issue_931.txt
+---
+ROOT@0..31
+  PREAMBLE@0..31
+    BIBTEX_INCLUDE@0..31
+      COMMAND_NAME@0..13 "\\bibliography"
+      CURLY_GROUP_WORD_LIST@13..31
+        L_CURLY@13..14 "{"
+        KEY@14..30
+          DOLLAR@14..15 "$"
+          WORD@15..30 "HOME/Literature"
+        R_CURLY@30..31 "}"
+

crates/parser/src/test_data/latex/issue_931.txt

@@ -0,0 +1 @@
+\bibliography{$HOME/Literature}