From 010d8daae9719a034d768664ee3a0a4f451f2304 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Pierre-Yves=20G=C3=A9rardy?= <py@py.gy>
Date: Mon, 21 May 2018 01:17:15 +0200
Subject: [PATCH] [ospec] pinpoint the o.only() call site

---
 ospec/change-log.md | 1 +
 ospec/ospec.js      | 7 ++++++-
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/ospec/change-log.md b/ospec/change-log.md
index bb7102a6..e037091c 100644
--- a/ospec/change-log.md
+++ b/ospec/change-log.md
@@ -3,6 +3,7 @@
 
 ## Upcoming...
 <!-- Add new lines here. Version number will be decided later -->
+- Pinpoint the `o.only()` call site
 - Improved wording, spacing and color-coding of report messages and errors ([#2147](https://github.com/MithrilJS/mithril.js/pull/2147), [@maranomynet](https://github.com/maranomynet))
 
 
diff --git a/ospec/ospec.js b/ospec/ospec.js
index 5674b499..526a088e 100644
--- a/ospec/ospec.js
+++ b/ospec/ospec.js
@@ -34,7 +34,12 @@ else window.o = m()
 		ctx = parent
 	}
 	o.only = function(subject, predicate, silent) {
-		if (!silent) console.log(highlight("/!\\ WARNING /!\\ o.only() mode"))
+		if (!silent) {
+			console.log(highlight("/!\\ WARNING /!\\ o.only() mode"))
+			try {throw new Error} catch (e) {
+				console.log(this.cleanStackTrace(e) + "\n")
+			}
+		}
 		o(subject, only = predicate)
 	}
 	o.spy = function(fn) {