Remove auto indented spaces if the line is empty

cmd/micro/actions.go

@@ -428,6 +428,11 @@ func (v *View) InsertNewline(usePlugin bool) bool {
 		for i := 0; i < len(ws); i++ {
 			v.Cursor.Right()
 		}
+
+		if IsSpacesOrTabs(v.Buf.Line(v.Cursor.Y - 1)) {
+			line := v.Buf.Line(v.Cursor.Y - 1)
+			v.Buf.Remove(Loc{0, v.Cursor.Y - 1}, Loc{Count(line), v.Cursor.Y - 1})
+		}
 	}
 	v.Cursor.LastVisualX = v.Cursor.GetVisualX()
 

cmd/micro/util.go

@@ -112,6 +112,17 @@ func IsSpaces(str string) bool {
 	return true
 }
 
+// IsSpacesOrTabs checks if a given string contains only spaces and tabs
+func IsSpacesOrTabs(str string) bool {
+	for _, c := range str {
+		if c != ' ' && c != '\t' {
+			return false
+		}
+	}
+
+	return true
+}
+
 // ParseBool is almost exactly like strconv.ParseBool, except it also accepts 'on' and 'off'
 // as 'true' and 'false' respectively
 func ParseBool(str string) (bool, error) {