1 files changed, 23 insertions, 14 deletions

diff --git a/linden/indra/llui/lllineeditor.cpp b/linden/indra/llui/lllineeditor.cpp
index 5441d0a..7d91ece 100644
--- a/linden/indra/llui/lllineeditor.cpp
+++ b/linden/indra/llui/lllineeditor.cpp
@@ -2621,28 +2621,37 @@ BOOL LLLineEditor::prevalidateASCII(const LLWString &str)
 
 BOOL LLLineEditor::evaluateFloat()
 {
-        bool success;
-        F32 result = 0.f;
+        bool success = false;
         std::string expr = getText();
         LLStringUtil::toUpper(expr);
 
-        success = LLCalc::getInstance()->evalString(expr, result);
-
-        if (!success)
+        // user deleted the contents, nothing to evaluate -- MC
+        if (expr.empty())
         {
-                // Move the cursor to near the error on failure
-                setCursor(LLCalc::getInstance()->getLastErrorPos());
-                // *TODO: Translated error message indicating the type of error? Select error text?
+                return success;
         }
         else
         {
-                // Replace the expression with the result
-                std::string result_str = llformat("%f",result);
-                setText(result_str);
-                selectAll();
-        }
+                F32 result = 0.f;
+                success = LLCalc::getInstance()->evalString(expr, result);
 
-        return success;
+                if (!success)
+                {
+                        // Move the cursor to near the error on failure
+                        setCursor(LLCalc::getInstance()->getLastErrorPos());
+                        // *TODO: Translated error message indicating the type of error? Select error text?
+                }
+                else
+                {
+                        // Replace the expression with the result
+                        std::ostringstream result_str;
+                        result_str << result;
+                        setText(result_str.str());
+                        selectAll();
+                }
+
+                return success;
+        }
 }
 
 void LLLineEditor::onMouseCaptureLost()