From 2b99026b05f3c0d1d2eef0892e91cee72f968f5f Mon Sep 17 00:00:00 2001
From: mitchell <70453897+667e-11@users.noreply.github.com>
Date: Mon, 16 Mar 2020 11:13:42 -0400
Subject: Detect and allow jumping to internal Lua errors.

---
 core/ui.lua | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

(limited to 'core')

diff --git a/core/ui.lua b/core/ui.lua
index 43101a96..aec0725f 100644
--- a/core/ui.lua
+++ b/core/ui.lua
@@ -495,7 +495,14 @@ if CURSES then
   end)
 end
 
-events_connect(events.ERROR, ui.print)
+local lua_error = (not WIN32 and '^/' or '^%a:[/\\]') .. '.-%.lua:%d+:'
+-- Print internal Lua error messages as they are reported.
+-- Attempt to mimic the Lua interpreter's error message format so tools that
+-- look for it can recognize these errors too.
+events_connect(events.ERROR, function(text)
+  if text and text:find(lua_error) then text = 'lua: ' .. text end -- mimic Lua
+  ui.print(text)
+end)
 
 --[[ The tables below were defined in C.
 
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