From 999339635fe9d47cc19618aa33bc40957a07f40c Mon Sep 17 00:00:00 2001
From: Paul Hatcherian <1835615+PaulHatch@users.noreply.github.com>
Date: Tue, 27 Dec 2022 21:34:15 -0600
Subject: [PATCH] Escpae prefix and namespace when creating regex

---
 src/formatting/DefaultTagFormatter.ts | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/src/formatting/DefaultTagFormatter.ts b/src/formatting/DefaultTagFormatter.ts
index 5b8d295..033c540 100644
--- a/src/formatting/DefaultTagFormatter.ts
+++ b/src/formatting/DefaultTagFormatter.ts
@@ -61,12 +61,16 @@ export class DefaultTagFormatter implements TagFormatter {
     return [major, minor, patch];
   };
 
-  public IsValid(tag: string): boolean {        
+  public IsValid(tag: string): boolean {
+    const regexEscape = (literal: string) => literal.replace(/\W/g, '\\$&');
+    const tagPrefix = regexEscape(this.tagPrefix);
+    const namespaceSeperator = regexEscape(this.namespaceSeperator);
+    const namespace = regexEscape(this.namespace);
+
     if (!!this.namespace) {
-      return new RegExp(`^${this.tagPrefix}[0-9]+\.[0-9]+\.[0-9]+${this.namespaceSeperator}${this.namespace}$`).test(tag);
+      return new RegExp(`^${tagPrefix}[0-9]+\.[0-9]+\.[0-9]+${namespaceSeperator}${namespace}$`).test(tag);
     }
 
-    return new RegExp(`^${this.tagPrefix}[0-9]+\.[0-9]+\.[0-9]+$`).test(tag);
+    return new RegExp(`^${tagPrefix}[0-9]+\.[0-9]+\.[0-9]+$`).test(tag);
   }
-
 }