From f0e07cc73c41db9afcd33f449f85e2fad097d8d2 Mon Sep 17 00:00:00 2001
From: Frank LENORMAND <lenormf@gmail.com>
Date: Sat, 1 Dec 2018 08:41:29 +0300
Subject: [PATCH] src: Prevent `:prompt -on-change` from crashing the editor

Fixes #1217
---
 src/commands.cc | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/src/commands.cc b/src/commands.cc
index c9822dda..cf9639fa 100644
--- a/src/commands.cc
+++ b/src/commands.cc
@@ -1908,7 +1908,17 @@ const CommandDesc prompt_cmd = {
                     case PromptEvent::Change: cmd = on_change; break;
                     case PromptEvent::Abort: cmd = on_abort; break;
                 }
-                CommandManager::instance().execute(cmd, context, sc);
+                try
+                {
+                    CommandManager::instance().execute(cmd, context, sc);
+                }
+                catch (Kakoune::runtime_error& error)
+                {
+                    context.print_status({ fix_atom_text(error.what().str()),
+                                           context.faces()["Error"] });
+                    context.hooks().run_hook(Hook::RuntimeError, error.what(),
+                                             context);
+                }
             });
     }
 };