From c22dc63d5333c85afd167944675bfebec6b5c9a3 Mon Sep 17 00:00:00 2001
From: Oswald Buddenhagen <oswald.buddenhagen@nokia.com>
Date: Wed, 26 May 2010 13:54:40 +0200
Subject: complain about unescaped backslashes

---
 qmake/project.cpp | 6 ++++++
 qmake/project.h   | 1 +
 2 files changed, 7 insertions(+)

diff --git a/qmake/project.cpp b/qmake/project.cpp
index 2be68be..9cf6a6f 100644
--- a/qmake/project.cpp
+++ b/qmake/project.cpp
@@ -671,6 +671,7 @@ QMakeProject::reset()
     scope_blocks.push(ScopeBlock());
     iterator = 0;
     function = 0;
+    backslashWarned = false;
 }
 
 bool
@@ -2933,6 +2934,11 @@ QMakeProject::doVariableReplaceExpand(const QString &str, QMap<QString, QStringL
                     break;
                 }
             }
+            if(!escape && !backslashWarned) {
+                backslashWarned = true;
+                warn_msg(WarnDeprecated, "%s:%d: Unescaped backslashes are deprecated.",
+                         parser.file.toLatin1().constData(), parser.line_no);
+            }
             if(escape || !replaced)
                 unicode =0;
         } else if(!quote && (unicode == SINGLEQUOTE || unicode == DOUBLEQUOTE)) {
diff --git a/qmake/project.h b/qmake/project.h
index 0c542db..fd8ced1 100644
--- a/qmake/project.h
+++ b/qmake/project.h
@@ -80,6 +80,7 @@ class QMakeProject
 
     bool recursive;
     bool own_prop;
+    bool backslashWarned;
     QString pfile, cfile;
     QMakeProperty *prop;
     void reset();
-- 
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