From 6cc736d6a5d179646717224913c9cb0f2bc55394 Mon Sep 17 00:00:00 2001
From: Andreas Suter <andreas.suter@psi.ch>
Date: Tue, 19 Aug 2025 18:09:29 +0200
Subject: [PATCH] prevent crash if no tab is present.

---
 src/musredit_qt5/musredit/PTextEdit.cpp | 25 +++++++++++++++----
 src/musredit_qt6/musredit/PTextEdit.cpp | 33 ++++++++++++++++++-------
 2 files changed, 44 insertions(+), 14 deletions(-)

diff --git a/src/musredit_qt5/musredit/PTextEdit.cpp b/src/musredit_qt5/musredit/PTextEdit.cpp
index 4f52756d6..909870250 100644
--- a/src/musredit_qt5/musredit/PTextEdit.cpp
+++ b/src/musredit_qt5/musredit/PTextEdit.cpp
@@ -2593,7 +2593,11 @@ void PTextEdit::musrView()
   }
 
   QString cmd = fAdmin->getExecPath() + "/musrview";
-  QString workDir = QFileInfo(*fFilenames.find( currentEditor() )).absolutePath();
+  QString fln="./";
+  PSubTextEdit *ce = currentEditor();
+  if (ce != nullptr)
+    fln = *fFilenames.find(currentEditor());
+  QString workDir = QFileInfo(fln).absolutePath();
   QStringList arg;
   QString str;
 
@@ -2662,7 +2666,11 @@ void PTextEdit::musrView2Dat()
     return;
 
   QString cmd = fAdmin->getExecPath() + "/musrview";
-  QString workDir = QFileInfo(*fFilenames.find( currentEditor() )).absolutePath();
+  QString fln="./";
+  PSubTextEdit *ce = currentEditor();
+  if (ce != nullptr)
+    fln = *fFilenames.find(currentEditor());
+  QString workDir = QFileInfo(fln).absolutePath();
   QStringList arg;
 
   for (auto it : flns) {
@@ -2729,7 +2737,7 @@ void PTextEdit::musrT0()
   }
 
   QString cmd = fAdmin->getExecPath() + "/musrt0";
-  QString workDir = QFileInfo(*fFilenames.find( currentEditor() )).absolutePath();
+  QString workDir = QFileInfo(*fFilenames.find(currentEditor())).absolutePath();
   QStringList arg;
   QString str;
 
@@ -2782,6 +2790,9 @@ void PTextEdit::musrT0()
  */
 void PTextEdit::musrFT()
 {
+  PSubTextEdit *ce = currentEditor();
+  if (ce == nullptr)
+    return;
 
   PGetMusrFTOptionsDialog *dlg = new PGetMusrFTOptionsDialog(*fFilenames.find( currentEditor() ), fMusrFTPrevCmd, fAdmin->getHelpUrl("musrFT"));
 
@@ -2903,7 +2914,7 @@ void PTextEdit::musrSetSteps()
 #if defined(Q_OS_DARWIN)
   cmd = QString("/Applications/musrStep.app/Contents/MacOS/musrStep");
 #endif
-  QString workDir = QFileInfo(*fFilenames.find( currentEditor() )).absolutePath();
+  QString workDir = QFileInfo(*fFilenames.find( currentEditor())).absolutePath();
   QStringList arg;
   QString str;
 
@@ -3093,7 +3104,11 @@ void PTextEdit::mupp()
 
   QProcess *proc = new QProcess(this);
 
-  QString workDir = QFileInfo(*fFilenames.find( currentEditor() )).absolutePath();
+  QString fln="./";
+  PSubTextEdit *ce = currentEditor();
+  if (ce != nullptr)
+      fln = *fFilenames.find(currentEditor());
+  QString workDir = QFileInfo(fln).absolutePath();
 
   // make sure that the system environment variables are properly set
   QProcessEnvironment env = QProcessEnvironment::systemEnvironment();
diff --git a/src/musredit_qt6/musredit/PTextEdit.cpp b/src/musredit_qt6/musredit/PTextEdit.cpp
index 891ab8671..fefcdf2f3 100644
--- a/src/musredit_qt6/musredit/PTextEdit.cpp
+++ b/src/musredit_qt6/musredit/PTextEdit.cpp
@@ -2585,12 +2585,16 @@ void PTextEdit::musrView()
   }
 
   QString cmd = fAdmin->getExecPath() + "/musrview";
-  QString workDir = QFileInfo(*fFilenames.find( currentEditor() )).absolutePath();
+  QString fln="./";
+  PSubTextEdit *ce = currentEditor();
+  if (ce != nullptr)
+    fln = *fFilenames.find(currentEditor());
+  QString workDir = QFileInfo(fln).absolutePath();
   QStringList arg;
   QString str;
 
   // file name
-  str = *fFilenames.find( currentEditor() );
+  str = fln;
   int pos = str.lastIndexOf("/");
   if (pos != -1)
     str.remove(0, pos+1);
@@ -2650,7 +2654,11 @@ void PTextEdit::musrView2Dat()
     return;
 
   QString cmd = fAdmin->getExecPath() + "/musrview";
-  QString workDir = QFileInfo(*fFilenames.find( currentEditor() )).absolutePath();
+  QString fln="./";
+  PSubTextEdit *ce = currentEditor();
+  if (ce != nullptr)
+    fln = *fFilenames.find(currentEditor());
+  QString workDir = QFileInfo(fln).absolutePath();
   QStringList arg;
 
   for (auto it : flns) {
@@ -2717,12 +2725,12 @@ void PTextEdit::musrT0()
   }
 
   QString cmd = fAdmin->getExecPath() + "/musrt0";
-  QString workDir = QFileInfo(*fFilenames.find( currentEditor() )).absolutePath();
+  QString workDir = QFileInfo(*fFilenames.find(currentEditor())).absolutePath();
   QStringList arg;
   QString str;
 
   // file name
-  str = *fFilenames.find( currentEditor() );
+  str = *fFilenames.find(currentEditor());
   int pos = str.lastIndexOf("/");
   if (pos != -1)
     str.remove(0, pos+1);
@@ -2763,8 +2771,11 @@ void PTextEdit::musrT0()
  */
 void PTextEdit::musrFT()
 {
+  PSubTextEdit *ce = currentEditor();
+  if (ce == nullptr)
+    return;
 
-  PGetMusrFTOptionsDialog *dlg = new PGetMusrFTOptionsDialog(*fFilenames.find( currentEditor() ), fMusrFTPrevCmd, fAdmin->getHelpUrl("musrFT"));
+  PGetMusrFTOptionsDialog *dlg = new PGetMusrFTOptionsDialog(*fFilenames.find(currentEditor()), fMusrFTPrevCmd, fAdmin->getHelpUrl("musrFT"));
 
   if (dlg == nullptr) {
     QMessageBox::critical(this, "ERROR musrFT", "Couldn't invoke musrFT Options Dialog.");
@@ -2877,12 +2888,12 @@ void PTextEdit::musrSetSteps()
 #if defined(Q_OS_DARWIN)
   cmd = QString("/Applications/musrStep.app/Contents/MacOS/musrStep");
 #endif
-  QString workDir = QFileInfo(*fFilenames.find( currentEditor() )).absolutePath();
+  QString workDir = QFileInfo(*fFilenames.find(currentEditor())).absolutePath();
   QStringList arg;
   QString str;
 
   // get file name and feed it to the command queue
-  str = *fFilenames.find( currentEditor() );
+  str = *fFilenames.find(currentEditor());
   int pos = str.lastIndexOf("/");
   if (pos != -1)
     str.remove(0, pos+1);
@@ -3064,7 +3075,11 @@ void PTextEdit::mupp()
 
   QProcess *proc = new QProcess(this);
 
-  QString workDir = QFileInfo(*fFilenames.find( currentEditor() )).absolutePath();
+  QString fln="./";
+  PSubTextEdit *ce = currentEditor();
+  if (ce != nullptr)
+    fln = *fFilenames.find(currentEditor());
+  QString workDir = QFileInfo(fln).absolutePath();
 
   // make sure that the system environment variables are properly set
   QProcessEnvironment env = QProcessEnvironment::systemEnvironment();