refactor(pcre): drop Result from Preg method return types

The Preg methods panic on PCRE failure (per the file header rationale),
so their anyhow::Result wrappers never carried an Err.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

4 files changed, 6 insertions, 10 deletions

diff --git a/crates/shirabe/src/package/archiver/archivable_files_finder.rs b/crates/shirabe/src/package/archiver/archivable_files_finder.rs
index 2e9a3f2..c6a2d39 100644
--- a/crates/shirabe/src/package/archiver/archivable_files_finder.rs
+++ b/crates/shirabe/src/package/archiver/archivable_files_finder.rs
@@ -59,8 +59,7 @@ impl ArchivableFilesFinder {
                 &format!("^{}", preg_quote(&sources_clone, Some('#'))),
                 "",
                 &fs.normalize_path(&realpath.to_string_lossy()),
-            )
-            .unwrap_or_default();
+            );
 
             let mut exclude = false;
             for f in &filters {
diff --git a/crates/shirabe/src/package/archiver/archive_manager.rs b/crates/shirabe/src/package/archiver/archive_manager.rs
index a4169ef..cb15b76 100644
--- a/crates/shirabe/src/package/archiver/archive_manager.rs
+++ b/crates/shirabe/src/package/archiver/archive_manager.rs
@@ -62,7 +62,7 @@ impl ArchiveManager {
     ) -> anyhow::Result<IndexMap<String, String>> {
         let base_name = match package.get_archive_name() {
             Some(name) => name.to_string(),
-            None => Preg::replace("#[^a-z0-9-_]#i", "-", &package.get_name())?,
+            None => Preg::replace("#[^a-z0-9-_]#i", "-", &package.get_name()),
         };
 
         let mut parts: IndexMap<String, String> = IndexMap::new();
@@ -70,7 +70,7 @@ impl ArchiveManager {
 
         let dist_reference = package.get_dist_reference();
         if let Some(ref dist_ref) = dist_reference {
-            if Preg::is_match("{^[a-f0-9]{40}$}", dist_ref).unwrap_or(false) {
+            if Preg::is_match("{^[a-f0-9]{40}$}", dist_ref) {
                 parts.insert("dist_reference".to_string(), dist_ref.to_string());
                 if let Some(dist_type) = package.get_dist_type() {
                     parts.insert("dist_type".to_string(), dist_type.to_string());
diff --git a/crates/shirabe/src/package/archiver/base_exclude_filter.rs b/crates/shirabe/src/package/archiver/base_exclude_filter.rs
index 4de3cbb..1bd5b85 100644
--- a/crates/shirabe/src/package/archiver/base_exclude_filter.rs
+++ b/crates/shirabe/src/package/archiver/base_exclude_filter.rs
@@ -86,11 +86,8 @@ pub trait BaseExcludeFilter {
                 relative_path
             };
 
-            // suppressed RuntimeException, equivalent to PHP try-catch
-            if let Ok(matched) = Preg::is_match(pattern, path) {
-                if matched {
-                    exclude = !negate;
-                }
+            if Preg::is_match(pattern, path) {
+                exclude = !negate;
             }
         }
 
diff --git a/crates/shirabe/src/package/archiver/git_exclude_filter.rs b/crates/shirabe/src/package/archiver/git_exclude_filter.rs
index ffa349c..aeaed0a 100644
--- a/crates/shirabe/src/package/archiver/git_exclude_filter.rs
+++ b/crates/shirabe/src/package/archiver/git_exclude_filter.rs
@@ -34,7 +34,7 @@ impl GitExcludeFilter {
     }
 
     fn parse_git_attributes_line_static(line: &str) -> Option<(String, bool, bool)> {
-        let parts = Preg::split(r"\s+", line).unwrap_or_default();
+        let parts = Preg::split(r"\s+", line);
 
         if parts.len() == 2 && parts[1] == "export-ignore" {
             return Some(BaseExcludeFilterBase::generate_pattern(&parts[0]));