diff --git a/clangcodecontext.cpp b/clangcodecontext.cpp
index 8ab272f..4d707a7 100644
--- a/clangcodecontext.cpp
+++ b/clangcodecontext.cpp
@@ -61,7 +61,7 @@ void CLangCodeContext::clangTerminated()
 {
     QStringList list;
     QString out = clangProc->readAll();
-    QRegularExpression re("COMPLETION\\: ([^\\n]*)", QRegularExpression::MultilineOption);
+    QRegularExpression re(R"(COMPLETION\: ([^\n]*))", QRegularExpression::MultilineOption);
     QRegularExpressionMatchIterator it = re.globalMatch(out);
     while(it.hasNext()) {
         QRegularExpressionMatch m = it.next();
diff --git a/codeeditor.cpp b/codeeditor.cpp
index 35b05a3..0c72ec8 100644
--- a/codeeditor.cpp
+++ b/codeeditor.cpp
@@ -155,7 +155,7 @@ void CodeEditor::insertCompletion(const QString &completion)
     QString s = completion;
     QTextCursor tc = textUnderCursor();
     if (s.startsWith("Pattern : ")) {
-        s = s.remove("Pattern : ").remove(QRegExp("[\\<|\\[]\\#[^\\#]*\\#[\\>|\\]]"));
+        s = s.remove("Pattern : ").remove(QRegExp(R"([\\<|\[]\#[^\#]*\#[\>|\]])"));
     } else if (s.contains(':')) {
         s = s.split(':').at(0).trimmed();
     }
diff --git a/configdialog.cpp b/configdialog.cpp
index 5f03231..62e343f 100644
--- a/configdialog.cpp
+++ b/configdialog.cpp
@@ -51,7 +51,7 @@ void adjustPath()
     QStringList pathList = path.split(path_separator);
     QStringList additional = QSettings().value("build/additional_path").toStringList()
 #ifdef Q_OS_WIN
-            .replaceInStrings("/", "\\")
+            .replaceInStrings("/", R"(\)")
 #endif
     ;
     pathList = additional + pathList;
diff --git a/etags.cpp b/etags.cpp
index 112fd69..0570db6 100644
--- a/etags.cpp
+++ b/etags.cpp
@@ -43,7 +43,7 @@ static QString processFileName(const QString& line, int *len)
 
 static void parseDefs(const QString& in, const QString& file, ETags::TagMap *map)
 {
-    QRegularExpression re("([^\\x7f]+)\\x7f([^\\x01]+)\\x01(\\d+),(\\d+)\\n");
+    QRegularExpression re(R"(([^\x7f]+)\x7f([^\x01]+)\x01(\d+),(\d+)\n)");
     QRegularExpressionMatchIterator it = re.globalMatch(in);
     while(it.hasNext()) {
         QRegularExpressionMatch m = it.next();
diff --git a/mainwindow.cpp b/mainwindow.cpp
index 4091024..2d03992 100644
--- a/mainwindow.cpp
+++ b/mainwindow.cpp
@@ -202,7 +202,7 @@ QString mkUrl(const QString& p, const QString& x, const QString& y) {
 
 static QString consoleMarkErrorT1(const QString& s) {
     QString str(s);
-    QRegularExpression re("^(.+?):(\\d+):(\\d+):(.+?):(.+?)$");
+    QRegularExpression re(R"(^(.+?):(\d+):(\d+):(.+?):(.+?)$)");
     re.setPatternOptions(QRegularExpression::MultilineOption);
     QRegularExpressionMatchIterator it = re.globalMatch(s);
     while(it.hasNext()) {
diff --git a/projectnewdialog.cpp b/projectnewdialog.cpp
index c81556c..01db8d7 100644
--- a/projectnewdialog.cpp
+++ b/projectnewdialog.cpp
@@ -201,7 +201,7 @@ void ProjectNewDialog::on_templateFile_editTextChanged(const QString &fileName)
     QString text = readAll(name);
     ui->parameterTable->setRowCount(0);
     if (!text.isEmpty()) {
-        QRegExp re("\\$\\{\\{([a-zA-Z0-9_]+)\\s*([a-zA-Z0-9_]+)*\\s*\\:*(.*)\\}\\}");
+        QRegExp re(R"(\$\{\{([a-zA-Z0-9_]+)\s*([a-zA-Z0-9_]+)*\s*\:*(.*)\}\})");
         re.setMinimal(true);
         re.setPatternSyntax(QRegExp::RegExp2);
         int idx = 0;
@@ -231,7 +231,7 @@ QString ProjectNewDialog::replaceTemplates(const QString &text) const
         QString key = ui->parameterTable->item(row, 0)->text().replace(' ', '_');
         QString val = ui->parameterTable->item(row, 1)->text();
 
-        QRegExp re(QString("\\$\\{\\{%1\\s*([a-zA-Z0-9_]+)*\\s*\\:*(.*)\\}\\}").arg(key));
+        QRegExp re(QString(R"(\$\{\{%1\s*([a-zA-Z0-9_]+)*\s*\:*(.*)\}\})").arg(key));
         re.setMinimal(true);
         re.setPatternSyntax(QRegExp::RegExp2);
         newString.replace(re, val);
diff --git a/projectview.cpp b/projectview.cpp
index 6f87f80..982f9f3 100644
--- a/projectview.cpp
+++ b/projectview.cpp
@@ -30,8 +30,9 @@ ProjectView::ProjectView(QWidget *parent) :
     QFile filterFiles(":/build/project-filters.txt");
     filterFiles.open(QFile::ReadOnly);
     while (!filterFiles.atEnd()) {
-        QString name = QString(filterFiles.readLine()).remove(':').remove(QRegExp("[\\r\\n]*"));
-        QString filter = QString(filterFiles.readLine()).remove(QRegExp("[\\r\\n]*"));
+        QRegExp crlf(R"([\r\n]*)");
+        QString name = QString(filterFiles.readLine()).remove(':').remove(crlf);
+        QString filter = QString(filterFiles.readLine()).remove(crlf);
         // qDebug() << "filter" << name << filter;
         if (!name.isEmpty() && !filter.isEmpty())
             ui->filterCombo->addItem(name, filter.split(' '));
diff --git a/targetupdatediscover.cpp b/targetupdatediscover.cpp
index 31f013f..04f9ceb 100644
--- a/targetupdatediscover.cpp
+++ b/targetupdatediscover.cpp
@@ -46,15 +46,15 @@ static QStringList parseRe(const QString& text, const QString& reText) {
     return set.toList();
 }
 
-static const QString TARGETS_RE = "(?<!^# Not a target\\:\\n)^([a-zA-Z0-9][^$#\\\\\\/\\t=\\.]*):(?:[^=]|$)";
-static const QString DEFINES_RE = "\\-D([^\\s\\$]+)";
-static const QString INCLUDES_RE = "\\-I([^\\s\\$]+)";
-static const QString CC_RE = "^\\s*([a-zA-Z0-9\\-]*gcc\\b)";
-static const QString CC_CFLAGS_RE = "\\b([a-zA-Z0-9\\-]*gcc.*?-c.*?$)";
-static const QString C_CXX_FILE_RE = "\\S+\\.cp?p?";
-static const QString O_FILE_RE = "\\-o\\s*\\S+\\.o";
-static const QString CC_OUT_INCLUDE_RE = "\\> search starts here\\:(.*?)End of search list";
-static const QString CC_OUT_DEFINES_RE = "\\#define ([_a-zA-Z0-9\\(\\,\\)]+) (.*?)$";
+static const QString TARGETS_RE = R"((?<!^# Not a target\:\n)^([a-zA-Z0-9][^$#\\\/\t=\.]*):(?:[^=]|$))";
+static const QString DEFINES_RE = R"(\-D([^\s\$]+))";
+static const QString INCLUDES_RE = R"(\-I([^\s\$]+))";
+static const QString CC_RE = R"(^\s*([a-zA-Z0-9\-]*gcc\b))";
+static const QString CC_CFLAGS_RE = R"(\b([a-zA-Z0-9\-]*gcc.*?-c.*?$))";
+static const QString C_CXX_FILE_RE = R"(\S+\.cp?p?)";
+static const QString O_FILE_RE = R"(\-o\s*\S+\.o)";
+static const QString CC_OUT_INCLUDE_RE = R"(\> search starts here\:(.*?)End of search list)";
+static const QString CC_OUT_DEFINES_RE = R"(\#define ([_a-zA-Z0-9\(\,\)]+) (.*?)$)";
 
 static void parseCCOut(const QString& text, QStringList *incs, QStringList *defs) {
     QRegularExpressionMatch m = QRegularExpression(
@@ -138,7 +138,7 @@ void TargetUpdateDiscover::finish(int ret)
             QString cmd = QString("%1 -xc -dM -E -v -")
                     .arg(QString(info.cc_cflags)
                          .remove("-MMD")
-                         .remove(QRegularExpression("-MF \\S+")));
+                         .remove(QRegularExpression(R"(-MF \S+)")));
             ccProc.start(cmd);
             qDebug() << "start " << cmd;
             if (ccProc.waitForStarted()) {