refactor(pcre): inline Preg into its call sites and drop the crate

Preg had shed everything it owned: after the last few rounds its methods
were one-line forwards to the shim's preg_*(), differing only in a
default argument or a wrapper the caller unwrapped anyway. The 460 call
sites now name the shim function, and shirabe-pcre is gone from the
workspace along with its LICENSE entry.

The forwards expand as they read: isMatch becomes
preg_match2(.., 0).is_some() (is_none() where PHP negates it), isMatch3
and match3 drop the .is_some(), matchAll counts through
preg_match_all2(..).occurrence_count(), and replace4/replace5 spell out
the limit and count arguments preg_replace2 takes. Callbacks are the one
place the shapes differ: preg_replace_callback carries an error out of
the callback, so the fourteen infallible closures wrap their result in
Ok() and expect() it back.

Config::process() is the fifteenth, and it drops the `error` cell it
captured to smuggle a failure past a closure that could only return a
String. The `?` in the closure now carries it, which is what the PHP
does -- a throw from the callback leaves preg_replace_callback at the
failing match rather than running the remaining replacements and
reporting the last error.

The module doc that explained why composer/pcre's exceptions and
*StrictGroups() variants have no counterpart moves to the shim's preg
module, where the functions it describes live.

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

1 files changed, 8 insertions, 6 deletions

diff --git a/crates/shirabe/src/repository/vcs_repository.rs b/crates/shirabe/src/repository/vcs_repository.rs
index 4066ac44..33de3dfb 100644
--- a/crates/shirabe/src/repository/vcs_repository.rs
+++ b/crates/shirabe/src/repository/vcs_repository.rs
@@ -27,10 +27,10 @@ use crate::util::Platform;
 use crate::util::ProcessExecutor;
 use crate::util::Url;
 use indexmap::IndexMap;
-use shirabe_pcre::Preg;
 use shirabe_php_shim::Catch as _;
 use shirabe_php_shim::{
-    InvalidArgumentException, PhpClass, PhpMixed, php_regex, str_replace, strpos,
+    InvalidArgumentException, PhpClass, PhpMixed, php_regex, preg_match2, preg_replace,
+    str_replace, strpos,
 };
 use shirabe_semver::constraint::SimpleConstraint;
 
@@ -479,7 +479,7 @@ impl VcsRepository {
                 // make sure tag packages have no -dev flag
                 data.insert(
                     "version".to_string(),
-                    PhpMixed::String(Preg::replace(
+                    PhpMixed::String(preg_replace(
                         php_regex!(r"{[.-]?dev$}i"),
                         "",
                         data.get("version")
@@ -489,7 +489,7 @@ impl VcsRepository {
                 );
                 data.insert(
                     "version_normalized".to_string(),
-                    PhpMixed::String(Preg::replace(
+                    PhpMixed::String(preg_replace(
                         php_regex!(r"{(^dev-|[.-]?dev$)}i"),
                         "",
                         data.get("version_normalized")
@@ -510,7 +510,9 @@ impl VcsRepository {
                 // broken package, version doesn't match tag
                 if version_normalized != parsed_tag {
                     if is_very_verbose {
-                        if Preg::is_match(php_regex!(r"{(^dev-|[.-]?dev$)}i"), &parsed_tag) {
+                        if preg_match2(php_regex!(r"{(^dev-|[.-]?dev$)}i"), &parsed_tag, 0)
+                            .is_some()
+                        {
                             self.io.write_error(&format!(
                                 "<warning>Skipped tag {}, invalid tag name, tags can not use dev prefixes or suffixes</warning>",
                                 tag
@@ -678,7 +680,7 @@ impl VcsRepository {
                 version = format!(
                     "{}{}",
                     prefix,
-                    Preg::replace(r"{(\.9{7})+}", ".x", &parsed_branch)
+                    preg_replace(r"{(\.9{7})+}", ".x", &parsed_branch)
                 );
             }