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, 3 insertions, 6 deletions

diff --git a/crates/shirabe/src/downloader/zip_downloader.rs b/crates/shirabe/src/downloader/zip_downloader.rs
index 7b0ad050..565005d9 100644
--- a/crates/shirabe/src/downloader/zip_downloader.rs
+++ b/crates/shirabe/src/downloader/zip_downloader.rs
@@ -12,7 +12,7 @@ use shirabe_php_shim::Catch as _;
 use shirabe_php_shim::{
     CmpOp, ErrorException, PhpMixed, RuntimeException, UnexpectedValueException, ZipArchive,
     bin2hex, class_exists, file_exists, file_get_contents, filesize, function_exists, hash_file,
-    impl_php_class, is_file, json_encode, php_regex, preg_match2, random_int, str_replace, strlen,
+    impl_php_class, is_file, json_encode, php_regex, preg_match, random_int, str_replace, strlen,
     substr, version_compare,
 };
 use shirabe_symfony_process::ExecutableFinder;
@@ -112,11 +112,8 @@ impl ZipDownloader {
                 .execute(&[command_spec[1].as_str()], &mut output, None::<&str>)
                 .unwrap_or(1)
                 == 0
-                && let Some(m) = preg_match2(
-                    php_regex!(r"{^\s*7-Zip(?:\s\[64\])?\s([0-9.]+)}"),
-                    &output,
-                    0,
-                )
+                && let Some(m) =
+                    preg_match(php_regex!(r"{^\s*7-Zip(?:\s\[64\])?\s([0-9.]+)}"), &output)
             {
                 let m1 = m.get(1).unwrap_or_default().to_string();
                 if version_compare(&m1, "21.01", CmpOp::Lt) {