RFC: Enter \frac12 and \hat\epsilon in Math (bug 2034)

[Vincent van Ravesteijn]

Is the attached ok ?

Vincent (not so experienced with math yet)

Index: src/mathed/InsetMathNest.cpp
===================================================================
--- src/mathed/InsetMathNest.cpp        (revision 29669)
+++ src/mathed/InsetMathNest.cpp        (working copy)
@@ -1519,7 +1519,13 @@
                }
 
                // leave macro mode and try again if necessary
-               cur.macroModeClose();
+               if (cur.macroModeClose()) {
+                       MathAtom const atom = cur.prevAtom();
+                       if (atom->asNestInset() && atom->isActive()) {
+                               cur.posBackward();
+                               cur.pushBackward(*cur.nextInset());
+                       }
+               }
                if (c == '{')
                        cur.niceInsert(MathAtom(new InsetMathBrace));
                else if (c != ' ')