From f324e976da065913af8b50a00f4bafc050e63e62 Mon Sep 17 00:00:00 2001
From: Arijit Basu <sayanarijit@gmail.com>
Date: Mon, 30 May 2022 08:04:10 +0530
Subject: [PATCH] Compile regex only when required

---
 src/msg/in_/external.rs | 23 +++++++++++++++++++++--
 1 file changed, 21 insertions(+), 2 deletions(-)

diff --git a/src/msg/in_/external.rs b/src/msg/in_/external.rs
index 07d8ba6..f081b55 100644
--- a/src/msg/in_/external.rs
+++ b/src/msg/in_/external.rs
@@ -1474,8 +1474,27 @@ pub struct NodeFilterApplicable {
 
 impl NodeFilterApplicable {
     pub fn new(filter: NodeFilter, input: String) -> Self {
-        let regex = Regex::new(&input).ok().map(CmpRegex);
-        let iregex = Regex::new(&input.to_lowercase()).ok().map(CmpRegex);
+        use NodeFilter::*;
+
+        let (regex, iregex) = if matches!(
+            filter,
+            RelativePathDoesMatchRegex
+                | IRelativePathDoesMatchRegex
+                | RelativePathDoesNotMatchRegex
+                | IRelativePathDoesNotMatchRegex
+                | AbsolutePathDoesMatchRegex
+                | IAbsolutePathDoesMatchRegex
+                | AbsolutePathDoesNotMatchRegex
+                | IAbsolutePathDoesNotMatchRegex
+        ) {
+            (
+                Regex::new(&input).ok().map(CmpRegex),
+                Regex::new(&input.to_lowercase()).ok().map(CmpRegex),
+            )
+        } else {
+            (None, None)
+        };
+
         Self {
             filter,
             input,