Use <a-'> for backward rotate selection and move rotate content to <a-">

README.asciidoc

@@ -371,6 +371,7 @@ Movement
  * `pagedown`: scroll down
 
  * `'`: rotate selections (the main selection becomes the next one)
+ * `<a-'>`: rotate selections backwards
 
  * `;`: reduce selections to their cursor
  * `<a-;>`: flip the selections direction
@@ -463,8 +464,8 @@ Changes
  * `<a-@>`: convert spaces to tabs in current selections, uses the buffer
             tabstop option or the count parameter for tabstop.
 
- * `<a-'>`: rotate selections content, if specified, the count groups
-            selections, so `3<a-'>` rotate (1, 2, 3) and (3, 4, 6)
+ * `<a-">`: rotate selections content, if specified, the count groups
+            selections, so `3<a-">` rotate (1, 2, 3) and (3, 4, 6)
             independently.
 
 Goto Commands

doc/manpages/keys.asciidoc

@@ -164,6 +164,9 @@ is a sequence of non whitespace characters
 *'*::
 	rotate selections (the main selection becomes the next one)
 
+*<a-'>*::
+	rotate selections backwards
+
 *;*::
 	reduce selections to their cursor
 
@@ -303,7 +306,7 @@ Changes
 	convert spaces to tabs in current selections, uses the buffer tabstop
 	option or the count parameter for tabstop
 
-*<a-'>*::
+*<a-">*::
 	rotate selections content, if specified, the count groups selections,
 	so the following command
 

src/normal.cc

@@ -1159,9 +1159,16 @@ void copy_selections_on_next_lines(Context& context, NormalParams params)
     selections.sort_and_merge_overlapping();
 }
 
+template<Direction direction>
 void rotate_selections(Context& context, NormalParams params)
 {
-    context.selections().rotate_main(params.count != 0 ? params.count : 1);
+    const int count = params.count ? params.count : 1;
+    auto& selections = context.selections();
+    const int index = selections.main_index();
+    const int num = selections.size();
+    selections.set_main_index((direction == Forward) ?
+                                (index + count) % num
+                              : (index + (num - count % num)) % num);
 }
 
 void rotate_selections_content(Context& context, NormalParams params)
@@ -1178,8 +1185,10 @@ void rotate_selections_content(Context& context, NormalParams params)
         std::rotate(it, end-count, end);
         it = end;
     }
-    context.selections().insert(strings, InsertMode::Replace);
-    context.selections().rotate_main(count);
+    auto& selections = context.selections();
+    selections.insert(strings, InsertMode::Replace);
+    selections.set_main_index((selections.main_index() + count) %
+                              selections.size());
 }
 
 enum class SelectFlags
@@ -1846,8 +1855,9 @@ static NormalCmdDesc cmds[] =
     { ctrl('o'), "jump backward in jump list", jump<Backward> },
     { ctrl('s'), "push current selections in jump list", push_selections },
 
-    { '\'', "rotate main selection", rotate_selections },
-    { alt('\''), "rotate selections content", rotate_selections_content },
+    { '\'', "rotate main selection", rotate_selections<Forward> },
+    { alt('\''), "rotate main selection", rotate_selections<Backward> },
+    { alt('"'), "rotate selections content", rotate_selections_content },
 
     { 'q', "replay recorded macro", replay_macro },
     { 'Q', "start or end macro recording", start_or_end_macro_recording },

src/selection.hh

@@ -97,8 +97,6 @@ struct SelectionList
     size_t main_index() const { return m_main; }
     void set_main_index(size_t main) { kak_assert(main < size()); m_main = main; }
 
-    void rotate_main(int count) { m_main = (m_main + count) % size(); }
-
     void avoid_eol();
 
     void push_back(const Selection& sel) { m_selections.push_back(sel); }

test/unit/rotate-content/cmd

@@ -1 +1 @@
-<a-'>
+<a-">