Add config fallback for empty latexmkrc files

CHANGELOG.md

@@ -21,6 +21,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Improve log file change detection under Windows
 - Cleanup diagnostics of deleted files
 - Let `\declaretheorem` accept a list of environment names instead of just a single name ([#1075](https://github.com/latex-lsp/texlab/issues/1075))
+- Use configured directories if not set explicitly by `latexmkrc` file ([#1095](https://github.com/latex-lsp/texlab/issues/1095))
 
 ## [5.15.0] - 2024-04-21
 

crates/base-db/src/deps/root.rs

@@ -74,27 +74,38 @@ impl ProjectRoot {
     }
 
     pub fn from_latexmkrc(workspace: &Workspace, dir: &Url) -> Option<Self> {
+        let config = workspace.config();
         let rcfile = workspace
             .iter()
             .filter(|document| document.dir == *dir)
             .find_map(|document| document.data.as_latexmkrc())?;
 
         let compile_dir = dir.clone();
         let src_dir = dir.clone();
-        let aux_dir = rcfile
+
+        let aux_dir_rc = rcfile
             .aux_dir
             .as_ref()
-            .and_then(|path| append_dir(dir, path, workspace).ok())
-            .unwrap_or_else(|| dir.clone());
+            .and_then(|path| append_dir(dir, path, workspace).ok());
 
-        let out_dir = rcfile
+        let out_dir_rc = rcfile
             .out_dir
             .as_ref()
-            .and_then(|path| append_dir(dir, path, workspace).ok())
+            .and_then(|path| append_dir(dir, path, workspace).ok());
+
+        let aux_dir = aux_dir_rc
+            .clone()
+            .or_else(|| append_dir(dir, &config.build.aux_dir, workspace).ok())
+            .unwrap_or_else(|| dir.clone());
+
+        let log_dir = aux_dir_rc
+            .or_else(|| append_dir(dir, &config.build.log_dir, workspace).ok())
+            .unwrap_or_else(|| dir.clone());
+
+        let pdf_dir = out_dir_rc
+            .or_else(|| append_dir(dir, &config.build.pdf_dir, workspace).ok())
             .unwrap_or_else(|| dir.clone());
 
-        let log_dir = aux_dir.clone();
-        let pdf_dir = out_dir;
         let additional_files = vec![];
 
         Some(Self {