refactor(preg): add preg_is_match for existence-only call sites

The capture groups were discarded at 162 of the preg_match call sites,
which only tested the Option. They now call preg_is_match, which lets the
regex engine skip capture tracking.

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

1 files changed, 3 insertions, 3 deletions

diff --git a/crates/shirabe/src/question/strict_confirmation_question.rs b/crates/shirabe/src/question/strict_confirmation_question.rs
index dbc39574..a0c1d92f 100644
--- a/crates/shirabe/src/question/strict_confirmation_question.rs
+++ b/crates/shirabe/src/question/strict_confirmation_question.rs
@@ -1,6 +1,6 @@
 //! ref: composer/src/Composer/Question/StrictConfirmationQuestion.php
 
-use shirabe_php_shim::{PhpMixed, empty, is_bool, preg_match};
+use shirabe_php_shim::{PhpMixed, empty, is_bool, preg_is_match};
 use shirabe_symfony_console::exception::InvalidArgumentException;
 use shirabe_symfony_console::question::Question;
 use shirabe_symfony_console::question::QuestionInterface;
@@ -53,10 +53,10 @@ impl StrictConfirmationQuestion {
                 return default.clone();
             }
             if let PhpMixed::String(s) = &answer {
-                if preg_match(&true_regex, s).is_some() {
+                if preg_is_match(&true_regex, s) {
                     return PhpMixed::Bool(true);
                 }
-                if preg_match(&false_regex, s).is_some() {
+                if preg_is_match(&false_regex, s) {
                     return PhpMixed::Bool(false);
                 }
             }