From 2092663365f9f5b1b79b4e5de599cf9b9abc4210 Mon Sep 17 00:00:00 2001
From: Jean-Marc Lasgouttes <lasgouttes@lyx.org>
Date: Thu, 31 Aug 2023 12:54:53 +0200
Subject: [PATCH] Add _v_() debug helper maco

This can be used with streams.
  LYXERR0(_v_(var))
leads to the message
 "var=<value of var>"
---
 src/support/debug.h | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/support/debug.h b/src/support/debug.h
index e284b9496e..f823ee156e 100644
--- a/src/support/debug.h
+++ b/src/support/debug.h
@@ -262,4 +262,13 @@ extern LyXErr lyxerr;
 	} while (0)
 
 
+/** Helper debug macro for quick and dirty logging. For example
+ *   int var = 2;
+ *   LYXERR0(_v_(var) << _v_(var + 1));
+ * yields
+ *   var=2 var + 1=3
+ * Not a great typesetting, but it is handy in debugging sessions.
+ */
+#define _v_(var) #var"=" << var << " "
+
 #endif
-- 
2.39.5