From 8eaabacf44698f7cde0c4d10cecb76c06b51b1b7 Mon Sep 17 00:00:00 2001
From: ridiculousfish <corydoras@ridiculousfish.com>
Date: Thu, 20 Feb 2014 13:30:26 -0800
Subject: [PATCH] Allow double-tapping tab to fully disclose pager, per #291

---
 pager.cpp  | 10 +++++++++-
 pager.h    |  3 +++
 reader.cpp | 12 ++++++++++--
 3 files changed, 22 insertions(+), 3 deletions(-)

diff --git a/pager.cpp b/pager.cpp
index 16456bc9d..b137bca2f 100644
--- a/pager.cpp
+++ b/pager.cpp
@@ -449,7 +449,9 @@ bool pager_t::completion_try_print(size_t cols, const wcstring &prefix, const co
     int term_width = this->available_term_width;
     int term_height = this->available_term_height - 1 - (search_field_shown ? 1 : 0); // we always subtract 1 to make room for a comment row
     if (! this->fully_disclosed)
+    {
         term_height = mini(term_height, PAGER_UNDISCLOSED_MAX_ROWS);
+    }
 
     size_t row_count = divide_round_up(lst.size(), cols);
     
@@ -691,7 +693,8 @@ void pager_t::update_rendering(page_rendering_t *rendering) const
     rendering->selected_completion_idx != this->visual_selected_completion_index(rendering->rows, rendering->cols) ||
     rendering->search_field_shown != this->search_field_shown ||
     rendering->search_field_line.text != this->search_field_line.text ||
-    rendering->search_field_line.position != this->search_field_line.position)
+    rendering->search_field_line.position != this->search_field_line.position ||
+    (rendering->remaining_to_disclose > 0 && this->fully_disclosed))
     {
         *rendering = this->render();
     }
@@ -934,6 +937,11 @@ bool pager_t::is_navigating_contents() const
     return selected_completion_idx != PAGER_SELECTION_NONE;
 }
 
+void pager_t::set_fully_disclosed(bool flag)
+{
+    fully_disclosed = flag;
+}
+
 const completion_t *pager_t::selected_completion(const page_rendering_t &rendering) const
 {
     const completion_t * result = NULL;
diff --git a/pager.h b/pager.h
index 8253dc113..a1c024a6e 100644
--- a/pager.h
+++ b/pager.h
@@ -159,6 +159,9 @@ class pager_t
     /* Indicates if we are navigating our contents */
     bool is_navigating_contents() const;
     
+    /* Become fully disclosed */
+    void set_fully_disclosed(bool flag);
+    
     /* Position of the cursor */
     size_t cursor_position() const;
     
diff --git a/reader.cpp b/reader.cpp
index db83e4b9d..250884ffb 100644
--- a/reader.cpp
+++ b/reader.cpp
@@ -3337,8 +3337,16 @@ const wchar_t *reader_readline(void)
                 editable_line_t *el = &data->command_line;
                 if (data->is_navigating_pager_contents() || (! comp_empty && last_char == R_COMPLETE))
                 {
-                    /* The user typed R_COMPLETE more than once in a row. Cycle through our available completions. */
-                    select_completion_in_direction(c == R_COMPLETE ? direction_next : direction_prev);
+                    /* The user typed R_COMPLETE more than once in a row. If we are not yet fully disclosed, then become so; otherwise cycle through our available completions. */
+                    if (data->current_page_rendering.remaining_to_disclose > 0)
+                    {
+                        data->pager.set_fully_disclosed(true);
+                        reader_repaint_needed();
+                    }
+                    else
+                    {
+                        select_completion_in_direction(c == R_COMPLETE ? direction_next : direction_prev);
+                    }
                 }
                 else
                 {