From 1a7bcfc31c397524135e77016b601c1c1485ffae Mon Sep 17 00:00:00 2001
From: Matthias Koefferlein <matthias@koefferlein.de>
Date: Mon, 13 Aug 2018 09:04:13 +0200
Subject: [PATCH] Fixed #155 (freeze after replacing nothing by something)

---
 src/lay/lay/layMacroEditorPage.cc | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/lay/lay/layMacroEditorPage.cc b/src/lay/lay/layMacroEditorPage.cc
index f82350c44..eb5eceb26 100644
--- a/src/lay/lay/layMacroEditorPage.cc
+++ b/src/lay/lay/layMacroEditorPage.cc
@@ -1004,6 +1004,8 @@ MacroEditorPage::replace_all (const QString &replace)
       int i = m_current_search.indexIn (b.text (), o);
       if (i < 0) {
         break;
+      } else if (m_current_search.matchedLength () == 0) {
+        break;  //  avoid an infinite loop
       }
 
       QString r = interpolate_string (replace, m_current_search);