[gnome-builder] command-bar: Add ctrl-a/ctrl-e shortcuts

[Christian Hergert <chergert src gnome org>]

commit 6a5cc8b90e5a2a6c2ac054ae1520154380cde81a
Author: Damien Lespiau <damien lespiau intel com>
Date:   Wed Oct 14 22:21:40 2015 +0100

    command-bar: Add ctrl-a/ctrl-e shortcuts
    
    When adding ctrl-w/u/h to the command bar, Christian commented that
    ctrl-a/e are also fairly widely used in command lines, for instance in
    those tools using readline. Great minds think alike, I did wonder about
    those shortcuts as well.
    
    Implementing the whole list of readline shortcuts, _that_ would be
    overkill !:)
    
    https://bugzilla.gnome.org/show_bug.cgi?id=756594

 data/keybindings/shared.css |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/data/keybindings/shared.css b/data/keybindings/shared.css
index 8c8718c..258c992 100644
--- a/data/keybindings/shared.css
+++ b/data/keybindings/shared.css
@@ -19,6 +19,9 @@ VteTerminal {
 
 @binding-set builder-command-bar-entry
 {
+  bind "<ctrl>a" { "move-cursor" (paragraph-ends, -1, 0) };
+  bind "<ctrl>e" { "move-cursor" (paragraph-ends, 1, 0) };
+
   bind "<ctrl>u" { "move-cursor" (paragraph-ends, -1, 0)
                    "delete-from-cursor" (paragraph-ends, 1) };
   bind "<ctrl>h" { "delete-from-cursor" (chars, -1) };