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, 2 insertions, 2 deletions

diff --git a/crates/shirabe/src/composer.rs b/crates/shirabe/src/composer.rs
index 6d3c6e26..1ed7abd0 100644
--- a/crates/shirabe/src/composer.rs
+++ b/crates/shirabe/src/composer.rs
@@ -11,7 +11,7 @@ use crate::package::{LockerInterface, RootPackageInterfaceHandle};
 use crate::plugin::PluginManager;
 use crate::repository::RepositoryManagerInterface;
 use crate::util::r#loop::Loop;
-use shirabe_php_shim::{php_regex, preg_match2};
+use shirabe_php_shim::{php_regex, preg_match};
 
 /// The Composer version this port tracks. Kept as-is so `Composer::VERSION`, the `composer`
 /// platform package and the HTTP User-Agent keep reporting a value plugins and servers can
@@ -43,7 +43,7 @@ pub fn get_version() -> String {
         return SOURCE_VERSION.to_string();
     }
     if !BRANCH_ALIAS_VERSION.is_empty()
-        && preg_match2(php_regex!("{^[a-f0-9]{40}$}"), VERSION, 0).is_some()
+        && preg_match(php_regex!("{^[a-f0-9]{40}$}"), VERSION).is_some()
     {
         return format!("{}+{}", BRANCH_ALIAS_VERSION, VERSION);
     }