Cursor moves before last word: close completion UI

src/gui/Pages/Chat/Composer/Composer.qml

@@ -55,7 +55,7 @@ Rectangle {
                     onAutoCompletePrevious: userCompletion.previous()
                     onAutoCompleteNext: userCompletion.next()
                     onCancelAutoCompletion: userCompletion.cancel()
-                    onExtraCharacterCloseAutoCompletion:
+                    onAcceptAutoCompletion:
                         ! userCompletion.autoOpen ||
                         userCompletion.autoOpenCompleted ?
                         userCompletion.accept() :

src/gui/Pages/Chat/Composer/MessageArea.qml

@@ -55,7 +55,7 @@ HTextArea {
 
     signal autoCompletePrevious()
     signal autoCompleteNext()
-    signal extraCharacterCloseAutoCompletion()
+    signal acceptAutoCompletion()
     signal cancelAutoCompletion()
 
     function setTyping(typing) {
@@ -189,7 +189,7 @@ HTextArea {
         autoCompletionOpen ? cancelAutoCompletion() : clearReplyTo()
 
     Keys.onReturnPressed: ev => {
-        if (autoCompletionOpen) extraCharacterCloseAutoCompletion()
+        if (autoCompletionOpen) acceptAutoCompletion()
         ev.accepted = true
 
         ev.modifiers & Qt.ShiftModifier ||
@@ -202,7 +202,7 @@ HTextArea {
     Keys.onEnterPressed: ev => Keys.returnPressed(ev)
 
     Keys.onMenuPressed: ev => {
-        if (autoCompletionOpen) extraCharacterCloseAutoCompletion()
+        if (autoCompletionOpen) acceptAutoCompletion()
 
         if (eventList && eventList.currentItem)
             eventList.currentItem.openContextMenu()
@@ -235,7 +235,7 @@ HTextArea {
     }
 
     Keys.onPressed: ev => {
-        if (ev.text && autoCompletionOpen) extraCharacterCloseAutoCompletion()
+        if (ev.text && autoCompletionOpen) acceptAutoCompletion()
 
         if (ev.matches(StandardKey.Copy) &&
             ! area.selectedText &&

src/gui/Pages/Chat/Composer/UserAutoCompletion.qml

@@ -7,7 +7,6 @@ import "../../../Base"
 import "../../../Base/HTile"
 
 // FIXME: a b -> a @p b → @p doesn't trigger completion
-// FIXME: close autocomplete when cursor moves away
 HListView {
     id: root
 
@@ -28,13 +27,18 @@ HListView {
         ) :
         ""
 
+    function getLastWordStart() {
+        const lastWordMatch = /(?:^|\s)[^\s]+$/.exec(textArea.text)
+        if (! lastWordMatch) return textArea.length
+
+        if (! (lastWordMatch.index === 0 && ! textArea.text[0].match(/\s/)))
+            return lastWordMatch.index + 1
+
+        return lastWordMatch.index
+    }
+
     function replaceLastWord(withText) {
-        let lastWordStart = /(?:^|\s)[^\s]+$/.exec(textArea.text).index
-
-        if (! (lastWordStart === 0 && ! textArea.text[0].match(/\s/)))
-            lastWordStart += 1
-
-        textArea.remove(lastWordStart, textArea.length)
+        textArea.remove(getLastWordStart(), textArea.length)
         textArea.insertAtCursor(withText)
     }
 
@@ -121,6 +125,11 @@ HListView {
     Connections {
         target: root.textArea
 
+        function onCursorPositionChanged() {
+            if (root.open && root.textArea.cursorPosition < getLastWordStart())
+                root.accept()
+        }
+
         function onTextChanged() {
             let changed = false