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elharo pushed a commit to branch fix/pathtool-windows-drive-regex
in repository https://gitbox.apache.org/repos/asf/maven-shared-utils.git

commit b5f9159590d23737e048f2981add4ad23fbfab07
Author: Elliotte Rusty Harold <[email protected]>
AuthorDate: Wed Jul 1 08:35:35 2026 -0400

    PathTool.getRelativeFilePath: fix broken Windows drive-letter regex
---
 src/main/java/org/apache/maven/shared/utils/PathTool.java | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/main/java/org/apache/maven/shared/utils/PathTool.java 
b/src/main/java/org/apache/maven/shared/utils/PathTool.java
index 95ee050..2284aa4 100644
--- a/src/main/java/org/apache/maven/shared/utils/PathTool.java
+++ b/src/main/java/org/apache/maven/shared/utils/PathTool.java
@@ -143,10 +143,12 @@ public class PathTool {
         String toPath = new File(newPath).getPath();
 
         // strip any leading slashes if its a windows path
-        if (toPath.matches("^\\[a-zA-Z]:")) {
+        if (toPath.length() > 2 && toPath.charAt(0) == '\\'
+                && Character.isLetter(toPath.charAt(1)) && toPath.charAt(2) == 
':') {
             toPath = toPath.substring(1);
         }
-        if (fromPath.matches("^\\[a-zA-Z]:")) {
+        if (fromPath.length() > 2 && fromPath.charAt(0) == '\\'
+                && Character.isLetter(fromPath.charAt(1)) && 
fromPath.charAt(2) == ':') {
             fromPath = fromPath.substring(1);
         }
 

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