[gimp] app: allow to remove the last added IScissors segment with backspace

[Michael Natterer <mitch src gnome org>]

commit 7c29077acd459b091ff41846c564074d4b1d9408
Author: Michael Natterer <mitch gimp org>
Date:   Tue Nov 8 13:45:12 2016 +0100

    app: allow to remove the last added IScissors segment with backspace

 app/tools/gimpiscissorstool.c |   23 +++++++++++++++++++----
 1 files changed, 19 insertions(+), 4 deletions(-)
---
diff --git a/app/tools/gimpiscissorstool.c b/app/tools/gimpiscissorstool.c
index 4ef6230..047e747 100644
--- a/app/tools/gimpiscissorstool.c
+++ b/app/tools/gimpiscissorstool.c
@@ -1070,6 +1070,22 @@ gimp_iscissors_tool_key_press (GimpTool    *tool,
 
   switch (kevent->keyval)
     {
+    case GDK_KEY_BackSpace:
+      if (! iscissors->curve->closed &&
+          g_queue_peek_tail (iscissors->curve->segments))
+        {
+          gimp_draw_tool_pause (GIMP_DRAW_TOOL (tool));
+
+          gimp_iscissors_tool_push_undo (iscissors);
+          icurve_delete_segment (iscissors->curve,
+                                 g_queue_peek_tail (iscissors->curve->segments));
+          gimp_iscissors_tool_free_redo (iscissors);
+
+          gimp_draw_tool_resume (GIMP_DRAW_TOOL (tool));
+          return TRUE;
+        }
+      return FALSE;
+
     case GDK_KEY_Return:
     case GDK_KEY_KP_Enter:
     case GDK_KEY_ISO_Enter:
@@ -2090,11 +2106,10 @@ icurve_delete_segment (ICurve   *curve,
     {
       next_segment->x1 = segment->x1;
       next_segment->y1 = segment->y1;
-
-      g_queue_remove (curve->segments, segment);
-
-      isegment_free (segment);
     }
+
+  g_queue_remove (curve->segments, segment);
+  isegment_free (segment);
 }
 
 static void