TeXstudioで日本語入力がうまくいかないバグがあったから直した

直せたっぽいんで

diff --git a/qcodeedit/lib/qeditor.cpp b/qcodeedit/lib/qeditor.cpp
index b9a067f..3c9a72c 100644
--- a/qcodeedit/lib/qeditor.cpp
+++ b/qcodeedit/lib/qeditor.cpp
@@ -3153,7 +3153,7 @@ void QEditor::inputMethodEvent(QInputMethodEvent* e)
   return;
  }
  */
-#ifdef Q_WS_MAC
+// #ifdef Q_WS_MAC
     QString preEdit=e->preeditString();
     if( !preEdit.isEmpty()){
         int i=-1;
@@ -3170,7 +3170,7 @@ void QEditor::inputMethodEvent(QInputMethodEvent* e)
         preEditLength=preEdit.length();
         preEditLineNumber=m_cursor.lineNumber();
     }
-#endif
+// #endif
 
  if ( e->commitString().count() ) {
   m_cursor.beginEditBlock();
@@ -3192,10 +3192,20 @@ void QEditor::inputMethodEvent(QInputMethodEvent* e)
 
   m_cursor.endEditBlock();
  }
+ 
+ if( preEdit.isEmpty() && e->commitString().isEmpty() && preEditSet) {
+  m_cursor.beginEditBlock();
+  m_cursor.movePosition(preEditLength, QDocumentCursor::Left, QDocumentCursor::KeepAnchor);
+  m_cursor.removeSelectedText();
+  m_cursor.endEditBlock();
+  preEditSet = false;
+  preEditLength = 0;
+ }
 
  foreach ( QEditorInputBindingInterface *b, m_bindings )
   b->postInputMethodEvent(e, this);
  
+ e->accept();
 }
 
 /*!

http://texstudio.sourceforge.net/こっからソースをDLしてきて

cd texstudio2.6.2
patch -p1 mypatch.patch

でパッチを適用して
https://sourceforge.net/apps/mediawiki/texstudio/index.php?title=CompileTXS
の手順でコンパイル