diff --git a/src/ce_editor.pas b/src/ce_editor.pas
index 0447f78f..05fe4121 100644
--- a/src/ce_editor.pas
+++ b/src/ce_editor.pas
@@ -291,21 +291,17 @@ begin
   //
   str := TMemoryStream.Create;
   try
-    ftempname := GetTempDir(false) + 'temp_' + uniqueObjStr(curr) + '.d';
+    ftempname := curr.tempFilename;
     curr.Lines.SaveToStream(str);
     str.SaveToFile(ftempname);
-    try
-      fname := ftempname;
-      srcpos := curr.SelStart;
-      if curr.GetWordAtRowCol(curr.LogicalCaretXY) <> '' then
-        ce_dcd.getSymbolLoc(fname, srcpos);
-      if fname <> ftempname then if fileExists(fname) then
-        CEMainForm.openFile(fname);
-      if srcpos <> -1 then
-        getCurrentEditor.SelStart := srcpos;
-    finally
-      DeleteFile(ftempname);
-    end;
+    fname := ftempname;
+    srcpos := curr.SelStart;
+    if curr.GetWordAtRowCol(curr.LogicalCaretXY) <> '' then
+      ce_dcd.getSymbolLoc(fname, srcpos);
+    if fname <> ftempname then if fileExists(fname) then
+      CEMainForm.openFile(fname);
+    if srcpos <> -1 then
+      getCurrentEditor.SelStart := srcpos;
   finally
     str.Free;
   end;
@@ -326,16 +322,12 @@ begin
   str := TMemoryStream.Create;
   try
     completion.Position := 0; // previous index could cause an error here.
-    fname := GetTempDir(false) + 'temp_' + uniqueObjStr(curr) + '.d';
+    fname := curr.tempFilename;
     curr.Lines.SaveToStream(str);
     str.SaveToFile(fname);
-    try
-      srcpos := curr.SelStart;
-      completion.ItemList.Clear;
-      ce_dcd.getCompletion(fname, srcpos, completion.ItemList);
-    finally
-      DeleteFile(fname);
-    end;
+    srcpos := curr.SelStart;
+    completion.ItemList.Clear;
+    ce_dcd.getCompletion(fname, srcpos, completion.ItemList);
   finally
     str.Free;
   end;
@@ -358,17 +350,13 @@ begin
   str := TMemoryStream.Create;
   lst := TStringList.Create;
   try
-    fname := GetTempDir(false) + 'temp_' + uniqueObjStr(curr) + '.d';
+    fname := curr.tempFilename;
     curr.Lines.SaveToStream(str);
-    try
-      str.SaveToFile(fname);
-      srcpos := curr.SelStart;
-      if curr.GetWordAtRowCol(curr.LogicalCaretXY) <> '' then
-        ce_dcd.getHint(fname, srcpos, lst);
-      result := lst.Text;
-    finally
-      DeleteFile(fname);
-    end;
+    str.SaveToFile(fname);
+    srcpos := curr.SelStart;
+    if curr.GetWordAtRowCol(curr.LogicalCaretXY) <> '' then
+      ce_dcd.getHint(fname, srcpos, lst);
+    result := lst.Text;
   finally
     str.Free;
     lst.Free;
diff --git a/src/ce_main.pas b/src/ce_main.pas
index 6ead130f..db013f0c 100644
--- a/src/ce_main.pas
+++ b/src/ce_main.pas
@@ -1163,25 +1163,18 @@ var
   editor: TCESynMemo;
   dmdproc: TProcess;
   runproc: TProcess;
-  fname, temppath, olddir: string;
+  fname: string;
 begin
-  olddir  := '';
   dmdproc := TProcess.Create(nil);
   runproc := TProcess.Create(nil);
   editor  := fEditWidg.editor[edIndex];
-  getDir(0, olddir);
   try
 
     fMesgWidg.ClearMessages(mcEditor);
     fMesgWidg.addCeInf('compiling ' + editor.fileName, mcEditor);
 
-    temppath := GetTempDir(false);
-    chDir(temppath);
-    {$IFDEF DEBUG}{$WARNINGS OFF}{$HINTS OFF}{$ENDIF}
-    fname := temppath + 'temp_' + uniqueObjStr(editor);
-    {$IFDEF DEBUG}{$WARNINGS ON}{$HINTS ON}{$ENDIF}
     if fileExists(editor.fileName) then editor.save
-    else editor.saveToFile(fname + '.d');
+    else editor.saveToFile(editor.tempFilename);
     fname := editor.fileName[1..length(editor.fileName) - length(extractFileExt(editor.fileName))];
 
     {$IFDEF RELEASE}
@@ -1208,8 +1201,8 @@ begin
       runproc.Execute;
       repeat ProcessOutputToMsg(runproc, mcEditor) until not runproc.Running;
       {$IFDEF MSWINDOWS}
-       //sysutils.DeleteFile(fname + '.exe');
-       //sysutils.DeleteFile(fname + '.obj');
+       sysutils.DeleteFile(fname + '.exe');
+       sysutils.DeleteFile(fname + '.obj');
       {$ELSE}
        sysutils.DeleteFile(fname);
        sysutils.DeleteFile(fname + '.o');
@@ -1223,9 +1216,6 @@ begin
   finally
     dmdproc.Free;
     runproc.Free;
-    if extractFilePath(editor.fileName) = GetTempDir(false) then
-       sysutils.DeleteFile(editor.fileName);
-    chDir(olddir);
   end;
 end;
 
diff --git a/src/ce_staticexplorer.pas b/src/ce_staticexplorer.pas
index 4bad432c..c8405ab4 100644
--- a/src/ce_staticexplorer.pas
+++ b/src/ce_staticexplorer.pas
@@ -382,14 +382,12 @@ begin
   lines := TStringList.Create;
   try
     // json file
-    jsf := GetTempDir(false);
-    jsf += uniqueObjStr(dmdProc) + '.json';
+    jsf := fDoc.tempFilename + '.json';
     // main source file
     scf := fDoc.fileName;
     if not fileExists(scf) then
     begin
-      scf := GetTempDir(false);
-      scf += uniqueObjStr(dmdProc) + '.d';
+      scf := fDoc.tempFilename;
       lines.Assign(fDoc.Lines);
       lines.SaveToFile(scf);
     end;
@@ -425,8 +423,6 @@ begin
     i := dmdproc.ExitStatus;
     dmdproc.Free;
     lines.Free;
-    if not fileExists(scf) then
-      DeleteFile(scf);
   end;
 
   if i <> 0 then
diff --git a/src/ce_synmemo.pas b/src/ce_synmemo.pas
index 21cdb9bb..d94de8b9 100644
--- a/src/ce_synmemo.pas
+++ b/src/ce_synmemo.pas
@@ -18,6 +18,7 @@ type
     fIsDSource: boolean;
     fIsConfig: boolean;
     fIdentifier: string;
+    fTempFileName: string;
     procedure changeNotify(Sender: TObject);
     procedure identifierToD2Syn;
   protected
@@ -27,6 +28,7 @@ type
     procedure MouseDown(Button: TMouseButton; Shift: TShiftState; X, Y:Integer); override;
   public
     constructor Create(aOwner: TComponent); override;
+    destructor destroy; override;
     procedure setFocus; override;
     procedure UpdateShowing; override;
     //
@@ -39,6 +41,7 @@ type
     property fileName: string read fFilename;
     property modified: boolean read fModified;
     property project: TCEProject read fAssocProject write fAssocProject;
+    property tempFilename: string read fTempFileName;
     //
     property isDSource: boolean read fIsDSource;
     property isProjectSource: boolean read fIsConfig;
@@ -77,6 +80,16 @@ begin
   fModified := false;
   ShowHint := true;
   TextBuffer.AddNotifyHandler(senrUndoRedoAdded, @changeNotify);
+
+  // avoid many call to get envir.string
+  fTempFileName := GetTempDir(false) + 'temp_' + uniqueObjStr(self) + '.d';
+end;
+
+destructor TCESynMemo.destroy;
+begin
+  if fileExists(fTempFileName) then
+    sysutils.DeleteFile(fTempFileName);
+  inherited;
 end;
 
 procedure TCESynMemo.setFocus;