refactor(preg): drop the offset argument from preg_match

Every call site but one passed offset 0. The remaining one, the UTF-8
chunking loop in Application, slices the subject instead: its pattern has
no anchor or lookaround, so matching a suffix is equivalent to starting
the search at that offset.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

1 files changed, 5 insertions, 6 deletions

diff --git a/crates/shirabe/src/package/loader/root_package_loader.rs b/crates/shirabe/src/package/loader/root_package_loader.rs
index bc49ffc0..491961a6 100644
--- a/crates/shirabe/src/package/loader/root_package_loader.rs
+++ b/crates/shirabe/src/package/loader/root_package_loader.rs
@@ -16,7 +16,7 @@ use crate::util::Platform;
 use crate::util::ProcessExecutor;
 use indexmap::IndexMap;
 use shirabe_php_shim::{
-    PhpMixed, RuntimeException, UnexpectedValueException, php_regex, preg_match2, preg_replace,
+    PhpMixed, RuntimeException, UnexpectedValueException, php_regex, preg_match, preg_replace,
     preg_split, strtolower,
 };
 
@@ -252,10 +252,9 @@ impl RootPackageLoader {
         mut aliases: Vec<IndexMap<String, String>>,
     ) -> Vec<IndexMap<String, String>> {
         for (req_name, req_version) in requires {
-            if let Some(m) = preg_match2(
+            if let Some(m) = preg_match(
                 php_regex!(r"{(?:^|\| *|, *)([^,\s#|]+)(?:#[^ ]+)? +as +([^,\s|]+)(?:$| *\|| *,)}"),
                 req_version,
-                0,
             ) {
                 let m1 = m.get(1).unwrap_or_default().to_string();
                 let m2 = m.get(2).unwrap_or_default().to_string();
@@ -317,7 +316,7 @@ impl RootPackageLoader {
 
             let mut matched = false;
             for constraint in &constraints {
-                if let Some(m) = preg_match2(&pattern, constraint, 0) {
+                if let Some(m) = preg_match(&pattern, constraint) {
                     let name = strtolower(req_name);
                     let m1 = m.get(1).unwrap_or_default().to_string();
                     let normalized_m1 = VersionParser::normalize_stability(&m1).unwrap_or_default();
@@ -338,7 +337,7 @@ impl RootPackageLoader {
             for constraint in &constraints {
                 let req_version_stripped =
                     preg_replace(php_regex!(r"{^([^,\s@]+) as .+$}"), "$1", constraint);
-                if preg_match2(php_regex!(r"{^[^,\s@]+$}"), &req_version_stripped, 0).is_some() {
+                if preg_match(php_regex!(r"{^[^,\s@]+$}"), &req_version_stripped).is_some() {
                     let stability_name = VersionParser::parse_stability(&req_version_stripped);
                     if stability_name != "stable" {
                         let name = strtolower(req_name);
@@ -363,7 +362,7 @@ impl RootPackageLoader {
     ) -> IndexMap<String, String> {
         for (req_name, req_version) in requires {
             let req_version = preg_replace(php_regex!(r"{^([^,\s@]+) as .+$}"), "$1", req_version);
-            if let Some(m) = preg_match2(php_regex!(r"{^[^,\s@]+?#([a-f0-9]+)$}"), &req_version, 0)
+            if let Some(m) = preg_match(php_regex!(r"{^[^,\s@]+?#([a-f0-9]+)$}"), &req_version)
                 && VersionParser::parse_stability(&req_version) == "dev"
             {
                 let name = strtolower(req_name);