refactor(preg): replace Preg::split*() with shim preg_split*()

preg_split2()'s limit was always -1 and its flags were always either 0 or
PREG_SPLIT_DELIM_CAPTURE alone, so both arguments are gone: the shim now
exposes preg_split() and preg_split_delim_capture() over a shared
preg_split_impl(). That leaves Preg::split()/split4() as bare
pass-throughs, so callers use the shim functions directly and the wrappers
are dropped along with the now-unreferenced PREG_SPLIT_* constants.

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

1 files changed, 4 insertions, 2 deletions

diff --git a/crates/shirabe/src/command/global_command.rs b/crates/shirabe/src/command/global_command.rs
index af25eb29..21375141 100644
--- a/crates/shirabe/src/command/global_command.rs
+++ b/crates/shirabe/src/command/global_command.rs
@@ -9,7 +9,9 @@ use crate::factory::Factory;
 use crate::util::Filesystem;
 use crate::util::Platform;
 use shirabe_pcre::Preg;
-use shirabe_php_shim::{LogicException, RuntimeException, chdir, impl_php_class, php_regex};
+use shirabe_php_shim::{
+    LogicException, RuntimeException, chdir, impl_php_class, php_regex, preg_split,
+};
 use shirabe_symfony_console::command::Command;
 use shirabe_symfony_console::completion::CompletionInput;
 use shirabe_symfony_console::completion::{CompletionSuggestions, StringOrSuggestion};
@@ -223,7 +225,7 @@ impl Command for GlobalCommand {
         input: std::rc::Rc<std::cell::RefCell<dyn InputInterface>>,
         output: std::rc::Rc<std::cell::RefCell<dyn OutputInterface>>,
     ) -> anyhow::Result<i64> {
-        let tokens = Preg::split(
+        let tokens = preg_split(
             php_regex!(r"{\s+}"),
             &Self::input_to_string(&*input.borrow())?,
         );