Preserve % sign inside BibTeX fields via cleanup

CHANGELOG.md

@@ -25,6 +25,9 @@ We refer to [GitHub issues](https://github.com/JabRef/jabref/issues) by using `#
 - Replaces manual thread management with cached thread pool
 - Files can now be moved to subfolders named by a custom format pattern, e.g., based on `entrytype`.
   The pattern can be specified in the settings like the filename pattern. [#1092](https://github.com/JabRef/jabref/issues/1092)
+
+
+- [#2375](https://github.com/JabRef/jabref/issues/2375) LaTeXCleanup action does now preserve % signs inside BibTeX fields
 
 ### Fixed
 - We fixed a few groups related issues:

src/main/java/net/sf/jabref/logic/formatter/bibtexfields/LatexCleanupFormatter.java

@@ -32,6 +32,7 @@ public String format(String oldString) {
         newValue = newValue.replace("  ", " "); // Clean up
         newValue = newValue.replace("$$", "");
         newValue = newValue.replace(" )$", ")$");
+        newValue = newValue.replace("%", "\\%"); // escape % used for comments in TeX
         return newValue;
     }
 

src/test/java/net/sf/jabref/logic/formatter/bibtexfields/LatexCleanupFormatterTest.java

@@ -26,6 +26,11 @@ public void test() {
                 formatter.format("A ${\\Delta}$${\\Sigma}$ modulator for {FPGA} {DSP}"));
     }
 
+    @Test
+    public void preservePercentSign() {
+        assertEquals("\\%", formatter.format("%"));
+    }
+
     @Test
     public void formatExample() {
         assertEquals("{VLSI DSP}", formatter.format(formatter.getExampleInput()));