[gtksourceview] vim: use ctrl+shift+v to paste in insert mode

[Christian Hergert <chergert src gnome org>]

commit f11a4d000fca1a0d5f0b9d3a2c33f76fa3e7d74e
Author: Christian Hergert <chergert redhat com>
Date:   Thu Jan 6 15:50:15 2022 -0800

    vim: use ctrl+shift+v to paste in insert mode
    
    Most terminal users are used to ctrl+shift+v to paste into the terminal
    and therefore are likely to have that mental model built in when using
    Vim there. This just makes it a bit nicer by making that work here too.

 gtksourceview/vim/gtksourceviminsert.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)
---
diff --git a/gtksourceview/vim/gtksourceviminsert.c b/gtksourceview/vim/gtksourceviminsert.c
index c9d2719e..516921a1 100644
--- a/gtksourceview/vim/gtksourceviminsert.c
+++ b/gtksourceview/vim/gtksourceviminsert.c
@@ -100,6 +100,7 @@ gtk_source_vim_insert_handle_keypress (GtkSourceVimState *state,
                                        const char        *string)
 {
        GtkSourceVimInsert *self = (GtkSourceVimInsert *)state;
+       GtkSourceView *view;
 
        g_assert (GTK_SOURCE_IS_VIM_STATE (state));
        g_assert (string != NULL);
@@ -112,6 +113,8 @@ gtk_source_vim_insert_handle_keypress (GtkSourceVimState *state,
                return TRUE;
        }
 
+       view = gtk_source_vim_state_get_view (state);
+
        /* Now handle our commands */
        if ((mods & GDK_CONTROL_MASK) != 0)
        {
@@ -126,6 +129,11 @@ gtk_source_vim_insert_handle_keypress (GtkSourceVimState *state,
                                gtk_source_vim_state_push (state, gtk_source_vim_insert_literal_new ());
                                return TRUE;
 
+                       case GDK_KEY_V:
+                               /* For the terminal users out there */
+                               g_signal_emit_by_name (view, "paste-clipboard");
+                               return TRUE;
+
                        default:
                                break;
                }
@@ -179,7 +187,6 @@ gtk_source_vim_insert_handle_event (GtkSourceVimState *state,
        if (gdk_event_get_event_type (event) != GDK_KEY_PRESS)
                return TRUE;
 
-
        gtk_source_vim_state_keyval_to_string (keyval, mods, string);
 
        return GTK_SOURCE_VIM_STATE_GET_CLASS (self)->handle_keypress (state, keyval, keycode, mods, string);