implement 'dG' motion (need to test it next)

fcore/normal-mode/make-normal-delete.sml

@@ -727,10 +727,7 @@ struct
 
       val buffer = LineGap.delete (0, cursorIdx, buffer)
       val buffer =
-        if #textLength buffer = 0 then
+        if #textLength buffer = 0 then LineGap.fromString "\n" else buffer
-          LineGap.fromString "\n"
-        else
-          buffer
       val buffer = LineGap.goToStart buffer
       val initialMsg = SEARCH (buffer, dfa, time) :: initialMsg
 
@@ -771,6 +768,35 @@ struct
         )
     end
 
+  fun deleteToEnd (app: app_type, time) =
+    let
+      val {buffer, cursorIdx, ...} = app
+
+      val buffer = LineGap.goToIdx (cursorIdx, buffer)
+      val startOfLineIdx = Cursor.vi0 (buffer, cursorIdx)
+      val length = #textLength buffer - startOfLineIdx
+
+      val buffer = LineGap.goToIdx (#textLength buffer, buffer)
+      val initialMsg = Fn.initMsgs (startOfLineIdx, length, buffer)
+
+      val buffer = LineGap.delete (startOfLineIdx, length, buffer)
+      val buffer =
+        if #textLength buffer = 0 then LineGap.fromString "\n" else buffer
+
+      val newLineEndIdx = Int.max (startOfLineIdx - 1, 0)
+      val buffer = LineGap.goToIdx (newLineEndIdx, buffer)
+      val newLineEndIdx =
+        if Cursor.isOnNewlineAfterChr (buffer, newLineEndIdx) then
+          Int.max (newLineEndIdx - 1, 0)
+        else
+          newLineEndIdx
+
+      val buffer = LineGap.goToIdx (newLineEndIdx, buffer)
+      val newLineStartIdx = Cursor.vi0 (buffer, newLineEndIdx)
+    in
+      finishAfterDeletingBuffer (app, newLineStartIdx, buffer, time, initialMsg)
+    end
+
   fun helpDeleteToMatch (app: app_type, low, high, time) =
     let
       val {buffer, dfa, ...} = app

fcore/normal-mode/normal-mode.sml

@@ -274,6 +274,7 @@ struct
       | #"n" => NormalDelete.deleteToNextMatch (app, count, time)
       | #"N" => NormalDelete.deleteToPrevMatch (app, count, time)
       | #"%" => NormalDelete.deletePair (app, time)
+      | #"G" => NormalDelete.deleteToEnd (app, time)
       (* non-terminal commands which require appending chr *)
       | #"t" => appendChr (app, chrCmd, str)
       | #"T" => appendChr (app, chrCmd, str)

todo.md

@@ -1,6 +1,7 @@
 # To-do list
 
 - Add tests for:
+  - `dG`
   - `d$`
   - `d^`
   - `dd`
@@ -18,6 +19,5 @@
 - Reimplement `di<symbol>` and `da<symbol>`
   - They should search for the next char in the specific pair, the same way in Vim
   - Add tests for both
-- Implement `dG` motion and test it
 
 Afterwards, add tests for yanking.