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, 2 insertions, 3 deletions

diff --git a/crates/shirabe/src/package/archiver/git_exclude_filter.rs b/crates/shirabe/src/package/archiver/git_exclude_filter.rs
index 3dd104ca..e3b35349 100644
--- a/crates/shirabe/src/package/archiver/git_exclude_filter.rs
+++ b/crates/shirabe/src/package/archiver/git_exclude_filter.rs
@@ -2,8 +2,7 @@
 
 use crate::package::archiver::BaseExcludeFilter;
 use crate::package::archiver::BaseExcludeFilterBase;
-use shirabe_pcre::Preg;
-use shirabe_php_shim::php_regex;
+use shirabe_php_shim::{php_regex, preg_split};
 use std::path::Path;
 
 pub struct GitExcludeFilter {
@@ -36,7 +35,7 @@ impl GitExcludeFilter {
     }
 
     fn parse_git_attributes_line_static(line: &str) -> Option<(String, bool, bool)> {
-        let parts = Preg::split(php_regex!(r"#\s+#"), line);
+        let parts = preg_split(php_regex!(r"#\s+#"), line);
 
         if parts.len() == 2 && parts[1] == "export-ignore" {
             return Some(BaseExcludeFilterBase::generate_pattern(&parts[0]));