What version are you running?
Reviewboard 3.0.5
What's the URL of the page containing the problem?
N/A 
What steps will reproduce the problem?
1.create a repo

2.file name is  /java-library/src/mp/{{ product_name }}-impl/src/main/java/com/linkedin/{{ product_name | replace(/"-/", /"/") }}/HelloMP.java 

3. create a review request 

What is the expected output? What do you see instead?
it should parse correctly 

see RB file name as "b/java-library/src/mp/{{ product_name }}-impl/src/main/java/com/linkedin/{{ product_name | replace(/"-/", /"/") }}/HelloMP.java" 
and 
"a/java-library/src/mp/{{ product_name }}-impl/src/main/java/com/linkedin/{{ product_name | replace(/"-/", /"/") }}/HelloMP.java"
What operating system are you using? What browser?
Chrome 
Please provide any additional information below.