Fix selection being lost from URL on load

Author: jpenilla

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

@@ -60,7 +60,7 @@ export interface UnresolvedLineSelection {
     end: UnresolvedLineRef;
 }
 
-export function writeLineRef(ref: LineRef): string {
+export function writeLineRef(ref: UnresolvedLineRef): string {
     const prefix = ref.new ? "R" : "L";
     return prefix + ref.no.toString();
 }

web/src/lib/diff-viewer.svelte.ts

@@ -128,11 +128,12 @@ export function selectionsSemanticallyEqual(a: Selection | undefined, b: Selecti
 
 function makeUrlHashValue(selection: Selection): string {
     let hash = encodeURIComponent(selection.file.toFile);
-    if (selection.lines) {
+    const lines = selection.lines ?? selection.unresolvedLines;
+    if (lines) {
         hash += ":";
-        hash += writeLineRef(selection.lines.start);
+        hash += writeLineRef(lines.start);
         hash += ":";
-        hash += writeLineRef(selection.lines.end);
+        hash += writeLineRef(lines.end);
     }
     return hash;
 }