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/tests/common/io_mock.rs b/crates/shirabe/tests/common/io_mock.rs
index 7aaa231a..a6a407a3 100644
--- a/crates/shirabe/tests/common/io_mock.rs
+++ b/crates/shirabe/tests/common/io_mock.rs
@@ -5,7 +5,7 @@ use shirabe::io::buffer_io::BufferIO;
 use shirabe::io::io_interface;
 use shirabe::io::{IOInterface, IOInterfaceImmutable, IOInterfaceMutable};
 use shirabe::util::platform::Platform;
-use shirabe_php_shim::{PHP_EOL, PhpMixed, php_regex, preg_match2, preg_quote, preg_split};
+use shirabe_php_shim::{PHP_EOL, PhpMixed, php_regex, preg_match, preg_quote, preg_split};
 use shirabe_symfony_console::output::output_interface;
 use std::collections::VecDeque;
 
@@ -166,7 +166,7 @@ impl IOMock {
                 };
 
                 while let Some(line) = lines.pop_front() {
-                    if preg_match2(&pattern, &line, 0).is_some() {
+                    if preg_match(&pattern, &line).is_some() {
                         continue 'expects;
                     }