When direction=rtl, fix home/end and arrow motion across line boundaries

Closes #6117

Author: marijnh

src/edit/methods.js

@@ -469,8 +469,9 @@ function findPosH(doc, pos, dir, unit, visually) {
   let oldPos = pos
   let origDir = dir
   let lineObj = getLine(doc, pos.line)
+  let lineDir = visually && doc.cm && doc.cm.getOption("direction") == "rtl" ? -dir : dir
   function findNextLine() {
-    let l = pos.line + dir
+    let l = pos.line + lineDir
     if (l < doc.first || l >= doc.first + doc.size) return false
     pos = new Pos(l, pos.ch, pos.sticky)
     return lineObj = getLine(doc, l)
@@ -484,7 +485,7 @@ function findPosH(doc, pos, dir, unit, visually) {
     }
     if (next == null) {
       if (!boundToLine && findNextLine())
-        pos = endOfLine(visually, doc.cm, lineObj, pos.line, dir)
+        pos = endOfLine(visually, doc.cm, lineObj, pos.line, lineDir)
       else
         return false
     } else {

src/input/movement.js

@@ -15,6 +15,7 @@ export function moveLogically(line, start, dir) {
 
 export function endOfLine(visually, cm, lineObj, lineNo, dir) {
   if (visually) {
+    if (cm.getOption("direction") == "rtl") dir = -dir
     let order = getOrder(lineObj, cm.doc.direction)
     if (order) {
       let part = dir < 0 ? lst(order) : order[0]