Add count support to jumps (<c-o> and <c-i>). Add jumps tests

src/context.cc

@@ -86,12 +86,13 @@ void JumpList::push(SelectionList jump)
     m_current = m_jumps.size();
 }
 
-const SelectionList& JumpList::forward(Context& context)
+const SelectionList& JumpList::forward(Context& context, int count)
 {
     if (m_current != m_jumps.size() and
-        m_current + 1 != m_jumps.size())
+        m_current + count < m_jumps.size())
     {
-        SelectionList& res = m_jumps[++m_current];
+        m_current += count;
+        SelectionList& res = m_jumps[m_current];
         res.update();
         context.print_status({ format("jumped to #{} ({})",
                                m_current, m_jumps.size() - 1),
@@ -101,14 +102,18 @@ const SelectionList& JumpList::forward(Context& context)
     throw runtime_error("no next jump");
 }
 
-const SelectionList& JumpList::backward(Context& context)
+const SelectionList& JumpList::backward(Context& context, int count)
 {
+    if ((int)m_current - count < 0)
+        throw runtime_error("no previous jump");
+
     const SelectionList& current = context.selections();
     if (m_current != m_jumps.size() and
         m_jumps[m_current] != current)
     {
         push(current);
-        SelectionList& res = m_jumps[--m_current];
+        m_current -= count;
+        SelectionList& res = m_jumps[m_current];
         res.update();
         context.print_status({ format("jumped to #{} ({})",
                                m_current, m_jumps.size() - 1),
@@ -123,7 +128,8 @@ const SelectionList& JumpList::backward(Context& context)
             if (--m_current == 0)
                 throw runtime_error("no previous jump");
         }
-        SelectionList& res = m_jumps[--m_current];
+        m_current -= count;
+        SelectionList& res = m_jumps[m_current];
         res.update();
         context.print_status({ format("jumped to #{} ({})",
                                m_current, m_jumps.size() - 1),

src/context.hh

@@ -20,8 +20,8 @@ class AliasRegistry;
 struct JumpList
 {
     void push(SelectionList jump);
-    const SelectionList& forward(Context& context);
-    const SelectionList& backward(Context& context);
+    const SelectionList& forward(Context& context, int count);
+    const SelectionList& backward(Context& context, int count);
     void forget_buffer(Buffer& buffer);
 
     friend bool operator==(const JumpList& lhs, const JumpList& rhs)

src/normal.cc

@@ -1403,11 +1403,12 @@ void replay_macro(Context& context, NormalParams params)
 }
 
 template<Direction direction>
-void jump(Context& context, NormalParams)
+void jump(Context& context, NormalParams params)
 {
+    const int count = std::max(1, params.count);
     auto jump = (direction == Forward) ?
-                 context.jump_list().forward(context) :
-                 context.jump_list().backward(context);
+                 context.jump_list().forward(context, count) :
+                 context.jump_list().backward(context, count);
 
     Buffer* oldbuf = &context.buffer();
     Buffer& buffer = const_cast<Buffer&>(jump.buffer());

test/normal/jump/backward-count/cmd

@@ -0,0 +1,5 @@
+gj
+/bar<ret>
+/qux<ret>
+3<c-o>
+aend<esc>

test/normal/jump/backward-count/in

@@ -0,0 +1,3 @@
+%(foo)
+bar
+qux

test/normal/jump/backward-count/out

@@ -0,0 +1,3 @@
+fooend
+bar
+qux

test/normal/jump/backward-invalid-count/cmd

@@ -0,0 +1,5 @@
+gj
+/bar<ret>
+/qux<ret>
+42<c-o>
+aend<esc>

test/normal/jump/backward-invalid-count/in

@@ -0,0 +1,3 @@
+%(foo)
+bar
+qux

test/normal/jump/backward-invalid-count/out

@@ -0,0 +1,3 @@
+foo
+bar
+qux

test/normal/jump/backward/cmd

@@ -0,0 +1,5 @@
+gj
+/bar<ret>
+/qux<ret>
+<c-o><c-o><c-o>
+aend<esc>

test/normal/jump/backward/in

@@ -0,0 +1,3 @@
+%(foo)
+bar
+qux

test/normal/jump/backward/out

@@ -0,0 +1,3 @@
+fooend
+bar
+qux

test/normal/jump/forward-count/cmd

@@ -0,0 +1,6 @@
+gj
+/bar<ret>
+/qux<ret>
+<c-o><c-o><c-o>
+3<tab>
+aend<esc>

test/normal/jump/forward-count/in

@@ -0,0 +1,3 @@
+%(foo)
+bar
+qux

test/normal/jump/forward-count/out

@@ -0,0 +1,3 @@
+foo
+bar
+quxend

test/normal/jump/forward-invalid-count/cmd

@@ -0,0 +1,6 @@
+gj
+/bar<ret>
+/qux<ret>
+<c-o><c-o><c-o>
+42<tab>
+aend<esc>

test/normal/jump/forward-invalid-count/in

@@ -0,0 +1,3 @@
+%(foo)
+bar
+qux

test/normal/jump/forward-invalid-count/out

@@ -0,0 +1,3 @@
+foo
+bar
+qux

test/normal/jump/forward/cmd

@@ -0,0 +1,6 @@
+gj
+/bar<ret>
+/qux<ret>
+<c-o><c-o><c-o>
+<tab><tab><tab>
+aend<esc>

test/normal/jump/forward/in

@@ -0,0 +1,3 @@
+%(foo)
+bar
+qux

test/normal/jump/forward/out

@@ -0,0 +1,3 @@
+foo
+bar
+quxend