Delete indent in multiples of indent size

src/text_editor/buffer_helpers.cpp

@@ -402,6 +402,11 @@ Int GetPrevChar(Buffer *buffer, Int pos) {
     return result;
 }
 
+wchar_t GetChar(Buffer *buffer, Int pos) {
+    if (pos >= 0 && pos < buffer->len) return buffer->str[pos];
+    return 0;
+}
+
 Int GetLineIndent(Buffer *buffer, Int line) {
     String16 string = GetLineStringWithoutNL(*buffer, line);
     Int      indent = 0;
@@ -421,6 +426,13 @@ Int GetIndentAtPos(Buffer *buffer, Int pos) {
     return result;
 }
 
+Range GetIndentRangeAtPos(Buffer *buffer, Int pos) {
+    Int   line   = PosToLine(*buffer, pos);
+    Int   indent = GetLineIndent(buffer, line);
+    Range range  = GetLineRangeWithoutNL(*buffer, line);
+    return {range.min, range.min + indent};
+}
+
 Range EncloseScope(Buffer *buffer, Int pos, wchar_t open, wchar_t close) {
     Range result = {pos, pos};
     for (Int i = pos; i >= 0; i -= 1) {

src/text_editor/commands_window.cpp

@@ -342,7 +342,25 @@ void Command_Delete(View *view, int direction, bool ctrl = false) {
     // Select things to delete
     For(view->carets) {
         if (GetSize(it.range)) continue;
-        it = MoveCaret(buffer, it, direction, ctrl, SHIFT_PRESSED);
+        if (direction == DIR_LEFT) {
+
+            // Delete indent in multiple of IndentSize
+            Range indent_range = GetIndentRangeAtPos(buffer, it.range.min);
+            if (it.range.min > indent_range.min && it.range.max <= indent_range.max) {
+                Int offset    = it.range.min - indent_range.min;
+                Int to_delete = (offset % (StyleIndentSize));
+                if (to_delete == 0) to_delete = StyleIndentSize;
+                to_delete = Clamp(to_delete, (Int)1, StyleIndentSize);
+                for (Int i = 0; i < to_delete; i += 1) {
+                    it = MoveCaret(buffer, it, direction, ctrl, SHIFT_PRESSED);
+                }
+
+            } else {
+                it = MoveCaret(buffer, it, direction, ctrl, SHIFT_PRESSED);
+            }
+        } else {
+            it = MoveCaret(buffer, it, direction, ctrl, SHIFT_PRESSED);
+        }
     }
 
     MergeCarets(view);

src/text_editor/todo.txt

@@ -9,8 +9,7 @@
     - fix the bug where when we create a new view the anchor value on new view is compromised because and incongruent with position so we select from start of buffer
     - hand cursor on hover over underlined word
 
-- ctrl + q to open, alt + q to go back
-- delete multiple spaces (based on indent size) on delete instead one by one
+- delete multiple spaces (based on indent size) on delete instead one by one. It should only work at beginning of line, in indent area
 - switch to previous view (ctrl + tab)
 - save location on open and allow for revert (buffer id? or buffer name? - buffer name can change, buffer id is harder to serialize, I guess if internal only then buffer id)
 - we could rewrite kill lines with simpler commands - extend selection to encompass lines->replace