From fda30fd528977a27f6dce497fa1fba6fc8c72f5f Mon Sep 17 00:00:00 2001
From: Philip Degarmo <aclysma@gmail.com>
Date: Tue, 27 Aug 2019 21:50:33 -0700
Subject: [PATCH] Fix backspace for text entry fields.

The original problem was that hitting backspace would insert 0x7f, and then delete it. This prevented deleting the intended character.
---
 imgui-winit-support/src/lib.rs | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/imgui-winit-support/src/lib.rs b/imgui-winit-support/src/lib.rs
index b7f1c33..4b22297 100644
--- a/imgui-winit-support/src/lib.rs
+++ b/imgui-winit-support/src/lib.rs
@@ -313,7 +313,13 @@ impl WinitPlatform {
                     _ => (),
                 }
             }
-            WindowEvent::ReceivedCharacter(ch) => io.add_input_character(ch),
+            WindowEvent::ReceivedCharacter(ch) => {
+                // Exclude the backspace key ('\u{7f}'). Otherwise we will insert this char and then
+                // delete it.
+                if ch != '\u{7f}' {
+                    io.add_input_character(ch)
+                }
+            }
             WindowEvent::CursorMoved { position, .. } => {
                 let position = self.scale_pos_from_winit(window, position);
                 io.mouse_pos = [position.x as f32, position.y as f32];