avoid drawing the char at the bottom-right of the terminal

It makes some terminals flicker, so it's now done only once
at startup and never after

7 files changed, 26 insertions, 4 deletions

diff --git a/Cargo.lock b/Cargo.lock
index ffb8ada..3d83101 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -84,7 +84,7 @@ dependencies = [
 
 [[package]]
 name = "broot"
-version = "0.18.5"
+version = "0.18.6-dev"
 dependencies = [
  "bet",
  "chrono",
diff --git a/Cargo.toml b/Cargo.toml
index 0c2aa59..db96a4d 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "broot"
-version = "0.18.5"
+version = "0.18.6-dev"
 authors = ["dystroy <denys.seguret@gmail.com>"]
 repository = "https://github.com/Canop/broot"
 documentation = "https://dystroy.org/broot"
diff --git a/README.md b/README.md
index f338792..4bd32d5 100644
--- a/README.md
+++ b/README.md
@@ -117,7 +117,7 @@ And you can add shorcuts, for example a <kbd>ctrl</kbd> sequence or a function k
 
 If you want to display *sizes*, *dates* and *permissions*, do `br -sdp` which gets you this:
 
-![replace ls](website/docs/img/20200628-sdp.png)
+![replace ls](website/docs/img/20200704-sdp.png)
 
 You may also toggle options with a few keystrokes while inside broot. For example hitting a space, a `d` then enter shows you the dates. Or a space, then `h` then enter and you see hidden files.
 
@@ -129,7 +129,7 @@ When sorting, the whole content of directories is taken into account. So if you
 
 If you start broot with the `--whale-spotting` option (or its shorcut `-w`), you get a mode tailored to "whale spotting" navigation, making it easy to determine what files or folders take space.
 
-![size](website/docs/img/20200628-whale-spotting.png)
+![size](website/docs/img/20200704-whale-spotting.png)
 
 And you keep all broot tools, like filtering or the ability to delete or open files and directories.
 
diff --git a/src/app/app.rs b/src/app/app.rs
index 69e0af4..ee4eff2 100644
--- a/src/app/app.rs
+++ b/src/app/app.rs
@@ -308,6 +308,8 @@ impl App {
 
         let skin = AppSkin::new(conf);
 
+        screen.clear_bottom_right_char(w, &skin.focused)?;
+
         // if some commands were passed to the application
         //  we execute them before even starting listening for events
         if let Some(unparsed_commands) = &con.launch_args.commands {
diff --git a/src/display/areas.rs b/src/display/areas.rs
index 23fe5f5..01685d4 100644
--- a/src/display/areas.rs
+++ b/src/display/areas.rs
@@ -102,6 +102,11 @@ impl Areas {
             };
             let y = y + 1;
             areas.input = Area::new(x, y, panel_width, 1);
+            if slot_idx==nb_pos-1 {
+                // the char at the bottom right of the terminal should not be touched
+                // (it makes some terminals flicker) so the input area is one char shorter
+                areas.input.width -= 1;
+            }
             areas.purpose = if slot_idx > 0 {
                 let area_width = panel_width / 2;
                 Some(Area::new(x - area_width, y, area_width, 1))
diff --git a/src/display/screen.rs b/src/display/screen.rs
index 3ea1fe0..ed93177 100644
--- a/src/display/screen.rs
+++ b/src/display/screen.rs
@@ -3,6 +3,7 @@ use {
         app::AppContext,
         conf::Conf,
         errors::ProgramError,
+        skin::PanelSkin,
     },
     crossterm::{
         cursor,
@@ -58,4 +59,17 @@ impl Screen {
         }
         Ok(())
     }
+    /// just clears the char at the bottom right.
+    /// (any redraw of this position makes the whole terminal flicker on some
+    /// terminals like win/conemu, so we draw it only once at start of the
+    /// app)
+    pub fn clear_bottom_right_char(
+        &self,
+        w: &mut W,
+        panel_skin: &PanelSkin,
+    ) -> Result<(), ProgramError> {
+        self.goto(w, self.width, self.height)?;
+        panel_skin.styles.default.queue(w, ' ')?;
+        Ok(())
+    }
 }
diff --git a/website/docs/index.md b/website/docs/index.md
index d8518a8..c2a5590 100644
--- a/website/docs/index.md
+++ b/website/docs/index.md
@@ -35,6 +35,7 @@ Most useful keys for this:
 * the letters of what you're looking for
 * <kbd>enter</kbd> to select a directory (staying in broot)
 * <kbd>esc</kbd> to get back to the previous state or clear your search
+* <kbd class=b>↓</kbd> and <kbd class=b>↑</kbd> may be used to move the selection
 * <kbd>alt</kbd><kbd>enter</kbd> to get back to the shell having `cd` to the selected directory
 * `:q` if you just want to quit (you can use <kbd>ctrl</kbd><kbd>q</kbd> if you prefer)