[patch] 2045: Handle LFUN_UNDERLINE in mathed

[Pavel Sanda]

hi,

i would like to put the patch originally written by Georg into the trunk,
see http://www.lyx.org/trac/ticket/2045. as stated in the bug there are
some issue (which i didnt reproduce now), but anyway its with this fix
better than the current state.

objections? 
pavel

diff --git a/src/mathed/InsetMathNest.cpp b/src/mathed/InsetMathNest.cpp
index a0962e9..00e4f7b 100644
--- a/src/mathed/InsetMathNest.cpp
+++ b/src/mathed/InsetMathNest.cpp
@@ -953,6 +953,10 @@ void InsetMathNest::doDispatch(Cursor & cur, FuncRequest & 
cmd)
                handleFont(cur, cmd.argument(), "textnormal");
                break;
 
+       case LFUN_FONT_UNDERLINE:
+               cur.recordUndo();
+               cur.handleNest(createInsetMath("underline"));
+               break;
        case LFUN_MATH_MODE: {
 #if 1
                // ignore math-mode on when already in math mode
@@ -1288,6 +1292,7 @@ bool InsetMathNest::getStatus(Cursor & cur, FuncRequest 
const & cmd,
                flag.setEnabled(true);
                break;
 
+       case LFUN_FONT_UNDERLINE:
        case LFUN_FONT_FRAK:
                flag.setEnabled(currentMode() != TEXT_MODE);
                break;