From 1bdc70103de256aa23a8afc54c9ea022ce790141 Mon Sep 17 00:00:00 2001
From: albert-github <albert.tests@gmail.com>
Date: Fri, 29 May 2020 17:54:19 +0200
Subject: Empty enum setting in configuration file

In case we have an empty setting in the doxygen configuration file, where an enum value is expected like:
```
OUTPUT_LANGUAGE =
```
we get the warning:
```
warning: argument '(null)' for option OUTPUT_LANGUAGE is not a valid enum value
Using the default: English!
```

The default value should immediately have been used.
---
 src/configimpl.l | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/configimpl.l b/src/configimpl.l
index d07e25c..da94484 100644
--- a/src/configimpl.l
+++ b/src/configimpl.l
@@ -234,6 +234,11 @@ void ConfigBool::convertStrToVal()
 
 void ConfigEnum::convertStrToVal()
 {
+  if (m_value.isEmpty())
+  {
+    m_value = m_defValue;
+    return;
+  }
   QCString val = m_value.stripWhiteSpace().lower();
   const char *s=m_valueRange.first();
   while (s)
-- 
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