From 0e019b745b730f66f71e4f5f2a62d470d3dd4d5e Mon Sep 17 00:00:00 2001
From: Alberto Griggio <agriggio@users.noreply.github.com>
Date: Sun, 7 Jul 2019 18:00:24 +0200
Subject: [PATCH] metadata: translate "----" to "Unknown" in lens
 identification

(cherry picked from commit 9b0dce535c7eeda2d20c0ef1fa342b00238a48a1)
---
 rtengine/imagedata.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/rtengine/imagedata.cc b/rtengine/imagedata.cc
index df043c86f..c1a5b898d 100644
--- a/rtengine/imagedata.cc
+++ b/rtengine/imagedata.cc
@@ -265,7 +265,7 @@ FramesData::FramesData(const Glib::ustring &fname) :
         if (lens.empty()) {
             lens = "Unknown";
         }
-        if (lens.empty()) {
+        if (lens.empty() || lens.find_first_not_of('-') == std::string::npos) {
             lens = "Unknown";
         }