Update tidy check for triagebot path mentions with glob support

Cargo.lock

@@ -5658,6 +5658,7 @@ dependencies = [
  "build_helper",
  "cargo_metadata 0.21.0",
  "fluent-syntax",
+ "globset",
  "ignore",
  "miropt-test-tools",
  "regex",

src/tools/tidy/Cargo.toml

@@ -8,6 +8,7 @@ autobins = false
 build_helper = { path = "../../build_helper" }
 cargo_metadata = "0.21"
 regex = "1"
+globset = "0.4.18"
 miropt-test-tools = { path = "../miropt-test-tools" }
 walkdir = "2"
 ignore = "0.4.18"

src/tools/tidy/src/triagebot.rs

@@ -1,5 +1,6 @@
 //! Tidy check to ensure paths mentioned in triagebot.toml exist in the project.
 
+use std::collections::HashSet;
 use std::path::Path;
 
 use toml::Value;
@@ -22,6 +23,9 @@ pub fn check(path: &Path, tidy_ctx: TidyCtx) {
 
     // Check [mentions."*"] sections, i.e. [mentions."compiler/rustc_const_eval/src/"]
     if let Some(Value::Table(mentions)) = config.get("mentions") {
+        let mut builder = globset::GlobSetBuilder::new();
+        let mut glob_entries = Vec::new();
+
         for (entry_key, entry_val) in mentions.iter() {
             // If the type is set to something other than "filename", then this is not a path.
             if entry_val.get("type").is_some_and(|t| t.as_str().unwrap_or_default() != "filename") {
@@ -33,8 +37,37 @@ pub fn check(path: &Path, tidy_ctx: TidyCtx) {
             let full_path = path.join(clean_path);
 
             if !full_path.exists() {
+                // The full-path doesn't exists, maybe it's a glob, let's add it to the glob set builder
+                // to be checked against all the file and directories in the repository.
+                builder.add(globset::Glob::new(&format!("{clean_path}*")).unwrap());
+                glob_entries.push(clean_path.to_string());
+            }
+        }
+
+        let gs = builder.build().unwrap();
+
+        let mut found = HashSet::new();
+        let mut matches = Vec::new();
+
+        // Walk the entire repository and match any entry against the remaining paths
+        for entry in ignore::WalkBuilder::new(path).build().flatten() {
+            // Strip the prefix as mentions entries are always relative to the repo
+            let entry_path = entry.path().strip_prefix(path).unwrap();
+
+            // Find the matches and add them to the found set
+            gs.matches_into(entry_path, &mut matches);
+            found.extend(matches.iter().copied());
+
+            // Early-exist if all the globs have been matched
+            if found.len() == glob_entries.len() {
+                break;
+            }
+        }
+
+        for (i, clean_path) in glob_entries.iter().enumerate() {
+            if !found.contains(&i) {
                 check.error(format!(
-                    "triagebot.toml [mentions.*] contains path '{clean_path}' which doesn't exist"
+                    "triagebot.toml [mentions.*] contains '{clean_path}' which doesn't match any file or directory in the repository"
                 ));
             }
         }