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, 12 insertions, 8 deletions

diff --git a/crates/shirabe/src/repository/vcs/hg_driver.rs b/crates/shirabe/src/repository/vcs/hg_driver.rs
index 120b8ea8..ada1063e 100644
--- a/crates/shirabe/src/repository/vcs/hg_driver.rs
+++ b/crates/shirabe/src/repository/vcs/hg_driver.rs
@@ -11,9 +11,10 @@ use crate::util::Hg as HgUtils;
 use crate::util::Url;
 use chrono::{DateTime, FixedOffset, Utc};
 use indexmap::IndexMap;
-use shirabe_pcre::Preg;
 use shirabe_php_shim::Catch as _;
-use shirabe_php_shim::{PhpMixed, RuntimeException, dirname, is_dir, is_writable, php_regex};
+use shirabe_php_shim::{
+    PhpMixed, RuntimeException, dirname, is_dir, is_writable, php_regex, preg_match2, preg_replace,
+};
 
 #[derive(Debug)]
 pub struct HgDriver {
@@ -57,7 +58,7 @@ impl HgDriver {
                 return Err(RuntimeException::new("HgDriver requires a usable cache directory, and it looks like you set it to be disabled".to_string()).into());
             }
 
-            let sanitized = Preg::replace(
+            let sanitized = preg_replace(
                 php_regex!(r"{[^a-z0-9]}i"),
                 "-",
                 &Url::sanitize(self.inner.url.clone()),
@@ -233,7 +234,7 @@ impl HgDriver {
             );
             for tag in self.inner.process.borrow().split_lines(&output) {
                 if !tag.is_empty()
-                    && let Some(m) = Preg::match3(php_regex!(r"(^([^\s]+)\s+\d+:(.*)$)"), &tag)
+                    && let Some(m) = preg_match2(php_regex!(r"(^([^\s]+)\s+\d+:(.*)$)"), &tag, 0)
                 {
                     tags.insert(
                         m.get(1).unwrap_or_default().to_string(),
@@ -263,7 +264,7 @@ impl HgDriver {
             for branch in self.inner.process.borrow().split_lines(&output) {
                 if !branch.is_empty()
                     && let Some(m) =
-                        Preg::match3(php_regex!(r"(^([^\s]+)\s+\d+:([a-f0-9]+))"), &branch)
+                        preg_match2(php_regex!(r"(^([^\s]+)\s+\d+:([a-f0-9]+))"), &branch, 0)
                 {
                     let name = m.get(1).unwrap_or_default().to_string();
                     if !name.starts_with('-') {
@@ -281,7 +282,7 @@ impl HgDriver {
             for branch in self.inner.process.borrow().split_lines(&output) {
                 if !branch.is_empty()
                     && let Some(m) =
-                        Preg::match3(php_regex!(r"(^(?:[\s*]*)([^\s]+)\s+\d+:(.*)$)"), &branch)
+                        preg_match2(php_regex!(r"(^(?:[\s*]*)([^\s]+)\s+\d+:(.*)$)"), &branch, 0)
                 {
                     let name = m.get(1).unwrap_or_default().to_string();
                     if !name.starts_with('-') {
@@ -304,12 +305,15 @@ impl HgDriver {
         url: &str,
         deep: bool,
     ) -> anyhow::Result<bool> {
-        if Preg::is_match(
+        if preg_match2(
             php_regex!(
                 r"#(^(?:https?|ssh)://(?:[^@]+@)?bitbucket.org|https://(?:.*?)\.kilnhg.com)#i"
             ),
             url,
-        ) {
+            0,
+        )
+        .is_some()
+        {
             return Ok(true);
         }