Use private use area char for trailing newline marker

see #9, some tokenizers would split the marker (% is commonly modulus)

This is not really a proper fix, but it improves things until a larger refactor fixes it properly (removing the marker entirely)

Author: jpenilla

web/src/lib/components/diff/concise-diff-view.svelte.ts

@@ -108,7 +108,8 @@ export type PatchLine = {
     newLineNo?: number;
 };
 
-const noTrailingNewlineMarker: string = "%%" + ["PATCH", "ROULETTE", "NO", "TRAILING", "NEWLINE", "MARKER"].join("%") + "%%";
+const joiner = "\uE000";
+const noTrailingNewlineMarker: string = joiner + joiner + ["PATCH", "ROULETTE", "NO", "TRAILING", "NEWLINE", "MARKER"].join(joiner) + joiner + joiner;
 
 enum LineProcessorState {
     CONTEXT,